DJI Agras T50 OEM Thumb Nut (12 Pcs) (YC.JG.ZS003594)

Thumb Nut 12-Pack | Tool-Free Fastening Nuts | Hand-Tighten Field Hardware | Quick-Service Fastener Set | Field-Ready Replacement Components | DJI Material Number YC.JG.ZS003594

DJI Material Number YC.JG.ZS003594 — this is the official DJI part number for this exact component. Match it to your parts diagram or the label on the original part to confirm fitment; factory labels may carry a revision suffix, which is the same part.

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🇺🇸 U.S.A. FIRST

Ares Acres LLC is a U.S.-based authorized DJI Agras reseller supporting American agricultural drone operators with genuine DJI Agras OEM replacement parts, accessories, and field-ready inventory.

FREE & FAST Shipping is included for all U.S. customers.

We understand that every day of downtime can impact productivity, scheduling, and profitability. That's why we focus on providing fast fulfillment, responsive customer support, and reliable access to the parts operators need most.

Ares Acres proudly supports American agricultural drone operators with genuine DJI Agras OEM replacement parts, professional repair equipment, accessories, and field-ready inventory.

The most-handled hardware on an agricultural drone isn't in the propulsion system — it's the tool-free fasteners crews touch every single day. Thumb nuts get gripped, spun, tightened, and loosened at every service, every adjustment, every field fix, all with bare or gloved hands and no wrench in sight.

That daily handling is exactly what wears them out — and a thumb nut with worn threads or a slick grip stops being tool-free hardware and starts being the fastener that costs a crew ten minutes and a skinned knuckle at the edge of a field. Worse, they're small, they're removable, and they disappear into tall grass.

That is why Ares Acres keeps hard-to-find field hardware in stock and shipped fast to the U.S.A. — in a 12-pack, because operators who service aircraft in the field know these are stocking hardware, not one-at-a-time parts.

For professional farmers, aerial applicators, and commercial drone operators, a full tin of fresh thumb nuts is field-service insurance.

We use specialized technicians to verify and dispatch the Thumb Nut (12 Pcs) ordered.

Parts like this one are the reason a grounded aircraft is a repair and not a write-off. A single component held in U.S. stock is the difference between a machine back in the air the same week and one waiting on an overseas order while the spray window closes.

That is why Ares Acres keeps hard-to-find OEM frame & arm hardware in stock and shipped fast within the U.S.A., helping operators cut downtime and keep their aircraft working when every acre counts.

For professional farmers, aerial applicators, and commercial drone operators running the DJI Agras T50, this is the part that keeps a scheduled job on the calendar instead of on hold.

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✅ DJI Agras T50 / T40 Compatibility Guarantee

• 🇺🇸 USA Compatibility Guarantee
• 👍🏻 Satisfaction Guarantee
• 💵 Money Back Guarantee
• 📦 Same Day Shipping & Tracking

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📦 Package Includes

• 12 × Thumb Nuts
• Premium tool-free fastening hardware
• Direct-fit replacement components
• Protective packaging

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🔧 Component Overview

The DJI T50 - T40 Thumb Nut (12 piece) set provides the tool-free fastening nuts used across the DJI Agras T50 and T40 agricultural drones.

Thumb nuts deliver secure, hand-tightened connections at the points crews access most — landing gear, spray system components, and other serviceable assemblies — combining a tight, reliable hold with the tool-free convenience field work demands. Crafted from premium, high-durability materials, a fresh set restores confident hand-tight fastening across the aircraft.

Commercial agricultural drones operate in demanding environments every day, including:

• Crop spraying
• Liquid fertilizer application
• Heavy payload operations
• Field-edge service and adjustments
• Orchard operations
• Vineyard spraying
• Precision agriculture missions
• Daily commercial deployments
• Fleet operations
• High-acreage contract work

Throughout these operations, thumb nuts are routinely exposed to:

• Daily hand-tightening and loosening cycles
• Constant airframe vibration in flight
• Chemical mist and spray residue
• Dust and field grit in the threads
• Moisture and washdown exposure
• Gloved-hand torque and grip wear
• UV exposure across long seasons
• Temperature swings in the field
• Drops and loss during field service
• Long commercial operating hours

Over time, this duty wears threads, slickens grip surfaces, and fatigues the material — and worn thumb nuts mean hand-tight connections that either won't hold or won't come loose.

The Thumb Nut 12-pack helps maintain:

• Secure, tool-free connections aircraft-wide
• Fast field service and adjustments
• Reliable hold under flight vibration
• Fresh spares for lost or dropped nuts
• Consistent fastening across the fleet
• Two-model fleet coverage
• Increased fleet readiness
• Maximum aircraft uptime
• Reliable commercial operation

For operators servicing aircraft at the field edge, tool-free hardware integrity is non-negotiable.

Before you blame the nut, decide whether the fault is in the nut or in the stud it runs on. Take the nut right off, wipe both parts dry, and run the nut down the full length of the thread by hand with nothing else in the joint. It should turn with the same light drag from one end to the other. Then try a fresh nut on the same stud. If the new nut binds in the same place, the stud is damaged and a tin of new nuts will not fix anything.

A cross-threaded nut announces itself in the first turn and a half, and that is where to look. Hold the nut so light rakes across the leading threads and look at the crests. Thread that has been cut a second time shows flattened, feathered, or torn crests on one side only, while the rest of the nut still looks sharp. That nut will start on a good stud and then damage it, so it goes in the scrap tin rather than back in the field kit.

Grip failure and thread failure feel the same from the operator seat, so separate them deliberately. Clean and dry both the nut and your hands, then tighten it. If it comes up firm dry but slips in a wet glove or with spray on your fingers, the knurl has worn smooth and the threads are fine. Run a thumbnail across the flutes of a suspect nut and then across a new one from the pack; the difference in how much the nail catches is usually obvious immediately.

If the complaint is that something keeps working loose, prove the joint is actually moving before you replace anything. Snug the nut, then draw a single marker line straight across the nut, the component, and the stud end so the three marks line up. Fly a normal load and look again. Marks that no longer line up mean this joint is losing preload. Marks still aligned mean the movement you are chasing is somewhere else in that assembly.

Read the bearing face of the nut, not just the threads. Sit the nut flange-down on a piece of flat steel or glass and press one edge: a nut that rocks has a face that is no longer square and will never pull a component down evenly no matter how hard you spin it. A bright polished ring or reddish dust on that face is fretting, which means the joint has been micro-moving under vibration and the nut has already lost the grip it was relying on.

Grit and damage both make a thread feel rough, and they call for different answers. Brush the nut out dry with a stiff brush, blow it clear, and run it on a clean stud again. Grit gives you drag that changes as material moves and then frees off once the thread is clean. Real damage gives you the same tight spot in the same place every single time, before and after cleaning. Only the second one is a reason to open the pack.

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⚙️ Functional Purpose

The Thumb Nuts are designed to provide secure, tool-free fastening at serviceable connection points on the DJI Agras T50 and T40.

The components help:

• Fasten components securely by hand
• Enable tool-free installation and removal
• Speed up field service and adjustments
• Secure landing gear and spray system components
• Hold tight under continuous flight vibration
• Support quick maintenance turnarounds
• Replace worn, slick, or lost thumb nuts
• Restore confident hand-tight fastening
• Stock the field kit with 12 fresh spares
• Maintain correct fitment across both models
• Support preventative maintenance
• Increase fleet readiness
• Keep fastening hardware field-ready

Every quick fix at the field edge runs through hand-tight hardware — and the fix is only as fast as the fastener.

Fresh thumb nuts keep field service quick and connections tight through season after season of daily handling.

Worn or damaged thumb nuts may contribute to:

• Connections loosening under vibration
• Nuts seizing and refusing to hand-loosen
• Stripped or crossed threads
• Slick grips that won't take torque
• Slower field service and adjustments
• Components rattling loose in flight
• Interrupted spraying missions
• Unexpected downtime
• Reduced fleet reliability

Replacing worn thumb nuts restores the tool-free convenience the aircraft was engineered around.

Make the joint safe before the nut comes off. Batteries out, aircraft powered down, and whatever the nut retains supported by hand, by a stand, or by a helper. Thumb nuts sit at points crews reach for exactly because those points come apart quickly, which also means something is free to drop, swing, or fall out of alignment the moment the last thread disengages. Know what the nut is holding up before you spin it off.

Do not reach for pliers when a thumb nut resists. Jaws crush the knurl flat, which destroys the only grip surface the part has, and they can squeeze the body out of round so the thread binds forever afterward. If a nut will not move by hand, stop and work the cause instead: flood the thread with clean water to carry grit out, dry it, support the joint so the stud is not being side-loaded, and try again with a dry glove for grip.

Start every nut backward. Set it against the stud, turn it counterclockwise under light finger pressure until you feel it drop into the existing thread, then turn it clockwise. That drop is the thread finding its own start, and it is the difference between running down a good thread and cutting a fresh one alongside it. If a nut will not pick up its thread within one turn, it is either the wrong nut, a damaged nut, or sitting on a damaged stud.

Run the nut down slowly and stop when the joint comes up firm. Spinning hardware down fast and dry is what starts galling, and a galled thumb nut will seize partway with the joint neither clamped nor free, which is the worst place it can stop. Let the nut find the seat under finger pressure, then take the last part of the travel deliberately so you can feel the moment the component actually pulls tight rather than blowing past it.

Tighten to hand-tight and leave it there. These are tool-free fasteners, and the clamp load the assembly was designed around is the clamp load a hand can produce. Adding a bar, a wrench, or a gloved two-hand pull puts more into the joint than the design assumes, which shows up later as a crushed knurl, a split flange, a stripped stud, or a nut nobody on the crew can remove at the field edge when it matters.

Confirm the seat, then mark it. A correctly seated nut arrives at a positive stop where the effort rises quickly and the component no longer rocks when you try to move it by hand. A nut that keeps turning with a soft, vague resistance has run out of thread engagement or is stripping, and no further turning will help. Once seated, put a marker line across nut, component, and stud so the next preflight is a glance instead of a guess.

Keep each nut with the position it came from during a service. Used nuts have bedded into their own seating face, and moving them between locations puts every joint onto a fresh, uneven bearing surface at exactly the moment you want everything to hold. Lay them out in a tray in the order they came off, and when you replace with new hardware, still keep the old ones grouped so you can see whether one station is chewing through nuts faster than the rest.

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⚠️ Common Replacement Indicators

Replacement may be recommended when operators observe:

• Nuts that loosen under vibration
• Nuts that seize or won't hand-loosen
• Worn, stripped, or crossed threads
• Slick or damaged grip surfaces
• Cracked or deformed nut bodies
• Corrosion or chemical attack
• Grit-packed threads that won't clean
• Lost or dropped nuts needing spares
• Inconsistent hand-tight feel
• High-cycle field hardware
• Maintenance inspection findings
• Fleet refurbishment projects
• Field kit restocking
• Preventative pre-season replacement

Common causes of thumb nut wear include thread wear from daily tightening cycles, grit grinding into threads during field service, chemical residue attacking the material, vibration loosening and re-torquing the connection every flight, and over-torquing by gloved hands in a hurry — hand hardware wears faster than crews expect, so experienced operations keep a stocked tin and swap nuts at the first sign of a bad thread.

For commercial operators, a 12-pack on the shelf is almost always cheaper than a mission delayed by one seized nut.

A nut that backs off at the same location flight after flight, while identical nuts elsewhere stay put, is telling you about that joint rather than about that nut. Look for a fretted or polished bearing face, a component hole that has gone oval, a trapped hose or wire under the joint, or a mating surface that is no longer flat. Fitting a fresh nut there without addressing the seat buys a few flights and then repeats.

A nut that spins freely, firms up, and then goes soft again as you keep turning has thread damage partway along its length and is finished. That soft zone is stripped or crushed thread, and the joint it is on is only being held by the few good threads before it. This one is worth catching on the bench, because in the field it feels briefly like a tight joint and then lets go under the first full tank.

A nut that came loose easily in the morning and will not budge at the end of the day usually collected grit, heat, and chemical residue during the shift rather than suddenly failing. Rinse and dry the thread before forcing it. If the same nut repeats that behavior after cleaning, the thread has picked up damage or the material is galling, and it belongs in the scrap tin rather than back on the aircraft for another day.

Knurling that has gone shiny and smooth is a replacement indicator even when the threads are perfect. A grip you cannot hold with a wet glove is a joint you cannot properly tighten, which means the fastener is no longer doing the job it was chosen for. Compare a suspect nut against a fresh one from the pack under your thumb; if the new one bites and the old one slides, put the old one in the scrap tin and stop nursing it.

Any crack, split, or bulge around the flange or the body means the nut has been overloaded, usually by a tool or by a two-handed pull in a hurry. A cracked thumb nut can still feel tight while carrying almost none of its designed clamp, and it can fail completely without warning under vibration. There is no inspection interval that makes a cracked fastener acceptable; it comes off the aircraft the moment it is found.

Green or white powder in the threads, staining across the knurl, or a chalky film that transfers to your fingers is chemical attack rather than dirt. Fertilizer salts and tank mixes are aggressive on small hardware that is rarely rinsed, and corrosion in a thread both increases the effort to turn it and hides thread damage underneath. Nuts showing corrosion should be replaced as a group, because they have all had the same exposure.

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📐 Specifications

DJI Material Number (SKU): YC.JG.ZS003594

Component Type: Thumb nuts / tool-free fastening hardware

Compatibility:

• DJI Agras T50
• DJI Agras T40

Package Quantity: 12 Thumb Nuts

Installation Area: Serviceable connection points including landing gear and spray system components

Function: Secure, hand-tightened, tool-free fastening

Design: Grip-optimized thumb nut, tool-free operation

Construction: Premium, high-durability materials

Mounting Type: Direct-fit replacement components

Application: Agricultural drone field service and maintenance

Thread Size, Pitch, and Length: Not published in this listing. Confirm by threading a new nut onto the stud you removed the old one from, by hand, before the aircraft goes back together. It should run the full engagement with even drag and no tight spot. Do not judge a match by eye or by comparing outside diameters, because a nut that starts and then binds is a nut that is cutting the stud thread as it goes.

Tightening Specification: None published, and none needed: this is tool-free hardware intended to be tightened by hand. Seat the nut until the joint comes up firm and the component stops moving, then stop. Do not apply pliers, a wrench, or a bar to add a final pull, because the assembly was designed around the clamp a hand produces and everything downstream of the nut is sized for that.

Material and Finish: Not published beyond being supplied as durable OEM hardware. Because the alloy and any surface treatment are unspecified, do not substitute a look-alike nut from a hardware bin, and do not attempt to clean corrosion off with an abrasive wheel or a wire brush in a drill, which removes whatever coating is present and leaves the thread rougher than it started.

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🧰 Fitment Verification Before You Order

This listing is DJI material number YC.JG.ZS003594. That number, not the description, is what makes a part match. Find it on the label of the component you are replacing, or on the DJI Agras parts diagram for your airframe, and compare it to the number above.

Revision suffixes are still the same part. DJI labels sometimes carry a trailing revision such as .01, .02, or .F. Those denote a production revision, not a different component. Match the base number and disregard the suffix.

Visually similar is not the same. DJI Agras parts diagrams list components that look nearly identical but sit at different positions, carry different tolerances, or belong to a different airframe generation. Ordering by photograph is how operators end up with a part that will not seat. Order by number.

Verified fitment for this listing: DJI Agras T50. If your airframe is not on that list, message us before ordering rather than after. We would rather answer a question than process a return, and so would you.

Not sure? Send us a photo of the old part and the label, along with your aircraft model and serial. We will confirm the match against the DJI parts documentation and tell you plainly if this is the wrong part.

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🛠️ Installation & Handling Notes

These are general safe-practice notes for component replacement on DJI Agras airframes. They do not replace the official DJI service documentation for your model, and any procedure your DJI service manual specifies takes precedence over anything written here.

Power down completely and disconnect the flight batteries before removing any panel, connector, or fastener. Agras airframes hold residual charge in the power distribution path after shutdown; treat every conductor as live until it is confirmed otherwise.

Photograph the assembly before you disturb it. Cable routing, connector orientation, and fastener lengths on Agras airframes are not interchangeable, and the Thumb Nut (12 Pcs) is easier to fit correctly when you can see how the original sat.

Torque to DJI specification. Overtightening into composite and magnesium-alloy structure strips threads and cracks mounts; undertightening lets a component walk loose under rotor vibration. Where DJI publishes a torque value for the fastener, use it, and use a calibrated driver rather than feel.

Check the mating surfaces and seals while you are in there. A component is only as good as what it seats against. Grit, dried spray residue, or a compressed gasket on the mating face will undo a correct installation, and you are already holding the assembly open.

Test before you spray. Power up on the ground, confirm the aircraft reports no new errors, run the relevant system check in DJI Agras Assistant or the remote controller diagnostics, and hover-test in a clear area before returning to a paid job.

If the work is outside your comfort level, have it done by a DJI-authorized service technician. The part cost is small next to the airframe.

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🚜 Necessary For

This component is ideal for:

• DJI Agras T50 operators
• DJI Agras T40 operators
• Farmers operating spray drones
• Commercial spraying contractors
• Agricultural aviation companies
• Fleet maintenance managers
• Agricultural drone technicians
• DJI Agras service providers
• Drone repair facilities
• Commercial drone fleets
• Precision agriculture businesses
• Field service kits
• Preventative maintenance programs
• Daily commercial operations
• Emergency repair inventory
• Professional agricultural drone operators

Especially valuable during:

• Spring spraying season
• Summer application windows
• Field-edge service and adjustments
• Landing gear and spray system work
• Multi-aircraft fleet maintenance
• Seasonal rebuilds
• Emergency repairs
• High-hour commercial operations

When service happens at the field edge with no toolbox in reach, keeping hand hardware fresh keeps operations moving.

A thumb nut is not a thumb screw, and the two are easy to mix up in a photograph. A nut is threaded all the way through and runs onto a stud or post that stays on the aircraft. A thumb screw has its own shank and threads into a captive insert. If the piece you removed has a shaft hanging off it, this pack is not what you need. Check the part you took off before ordering, not the assembly it came out of.

These are not the fastening nuts from the propulsion area. Propeller and motor hardware lives in a joint that spins at working speed with a blade attached, uses different geometry, and in some positions is not conventionally threaded at all. Everything small and threaded looks alike once it is in a tray, so keep hand hardware and propulsion hardware physically separated on the bench and never let a piece migrate between the two jobs.

Not every knurled nut on the aircraft is this part. Spray plumbing, nozzle bodies, and tank retention hardware also use hand-turned fittings, and some of those are sealing components with a face or an O-ring seat that a plain fastening nut does not have. If the nut you removed had a gasket, a tapered face, or came out of a wet joint, look for the plumbing part rather than the frame hardware.

Resist the urge to fill the tin from a hardware store bin. A nut can share a thread size and still be wrong: flange diameter decides how load spreads into a composite or plastic component, height decides how much thread engages, and the alloy and coating decide how it behaves after a season of fertilizer. A substitute that threads on happily is the kind of part that gets forgotten until the joint it holds comes apart.

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💡 Why This Part Matters

Nobody budgets for thumb nuts — right up until a seized one stops a service job cold, or a worn one lets a component rattle loose mid-mission. The smallest hardware on the aircraft has an outsized ability to waste time, precisely because it's the hardware crews rely on being effortless.

The 12-pack approach is how professional operations handle it: hand hardware is a consumable, spares live in the field kit, and any nut with a suspect thread or slick grip gets swapped on the spot instead of nursed along. Twelve fresh nuts cost less than one delayed mission.

The Thumb Nut 12-pack helps maintain:

• Tool-free service worth relying on
• Fast field turnarounds
• Connections that hold under vibration
• A stocked field kit all season
• Two-model fleet coverage
• Professional fleet standards
• Increased aircraft uptime
• Reliable commercial performance
• Long-term operational confidence

Running worn hand hardware, operators risk:

• Components rattling loose in flight
• Seized nuts stalling field service
• Stripped threads at the worst moment
• Lost nuts with no spares on hand
• Interrupted missions
• Unexpected downtime
• Lost spraying opportunities
• Reduced return on investment

For practical, hardworking operators, the value is simple:

Protect the connections. Protect the turnaround. Protect the mission. Protect the season.

Professional DJI Agras operators understand that fast field service is built on hardware that works every time. Keeping a 12-pack of fresh thumb nuts in the kit means every hand-tight connection secure and every adjustment quick all season — and that difference is what separates a good season from a frustrating one.

Every time a thumb nut is off, you have a free look at the stud or post it runs on, and that is the part that is expensive to replace. Check the thread for flattened crests, for a bright galled smear, or for a bend you can see by rolling the aircraft-side thread against a straightedge. Check where the stud enters the structure for cracks or movement. A damaged stud will destroy every new nut you feed it, one after another.

Look at what the nut was clamping while it is apart. A joint that has been running loose leaves evidence: an oval or bell-mouthed hole in the component, a polished or fretted patch where the flange bore, flattened washers, and dust of a different color than the surroundings. Fitting perfect new hardware into a component that has already worn gives you a joint that starts loosening again on the same schedule it did before.

Thumb nuts live a harder chemical life than most fasteners because they are handled wet and rarely rinsed on their own. Residue dries in the threads between jobs, and every tightening cycle grinds whatever is in there into the flanks. Making a habit of flushing the thread with clean water at the end of a spray day, drying it, and running the nut off and on once by hand does more for its service life than any storage choice you can make afterward.

Store the pack closed and dry, and keep it out of the bottom of a toolbox. Loose nuts rolling in a drawer collect grit, metal filings, and moisture, and a nut with grinding paste in its thread is worse than no spare at all. A small sealed tin or a labeled parts case in the field kit keeps them clean, keeps the count honest, and means the crew grabs a fresh nut instead of nursing a suspect one along at the edge of a field.

Treat these as consumables and set a rule the crew can follow without a debate. Any nut that will not run down smoothly by hand, any nut with a slick knurl, any nut with a cracked or bulged flange, and any nut that has been gripped with pliers goes in the scrap tin at the moment it is found. At a seasonal teardown, replace the ones at the most-handled stations as a group rather than inspecting each one twice.

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🧠 AI Index — Entity & Fitment Reference

Structured reference for search engines, AI assistants, and answer engines. Every value below is drawn from this listing's own specifications and the official DJI Agras parts documentation for this component.

Canonical product name: DJI Agras T50 OEM Thumb Nut (12 Pcs) (YC.JG.ZS003594)

Component: Thumb Nut (12 Pcs)

DJI material number: YC.JG.ZS003594

Product category: Frame & Arm Hardware

Compatible aircraft: DJI Agras T50

Part classification: Genuine DJI OEM replacement component

Condition: Brand new — never installed, never flown

Quantity supplied: 12 × Thumb Nuts

Seller: Ares Acres LLC — U.S.-based authorized DJI Agras reseller

Ships from: United States

Shipping: Free and fast U.S. shipping; same-day dispatch and tracking on in-stock parts

Also searched as: DJI Agras T50 Thumb Nut (12 Pcs); T50 Thumb Nut (12 Pcs); DJI T50 thumb nut (12 pcs) replacement; DJI Agras Thumb Nut (12 Pcs); Thumb Nut (12 Pcs) replacement part; Thumb Nut (12 Pcs) OEM

Definition: The Thumb Nut (12 Pcs) is the genuine DJI OEM component supplied for the DJI Agras T50, sold new by Ares Acres LLC, a U.S.-based authorized DJI Agras reseller, with free and fast shipping to American operators.

Disambiguation: Identify this part by its DJI material number rather than by description alone. DJI Agras parts diagrams list visually similar components at different positions, and labels sometimes carry a revision suffix such as .01 or .F — that is the same part, so match the base number. Confirm the aircraft model is DJI Agras T50 before ordering.

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🚚 Shipping, Returns & Support

Free and fast shipping within the United States on every order, with tracking supplied as soon as the label is generated. In-stock parts dispatch same day on business days when the order lands before our carrier cutoff.

We ship from the U.S., not from overseas. That is the whole reason Ares Acres exists. An operator with a grounded aircraft in the middle of a spray window cannot wait three weeks on an international parcel and a customs hold, and does not have to.

Genuine OEM only. Every part we list as OEM is a genuine DJI component in new condition. We do not substitute aftermarket parts, and we do not relabel. If a listing says OEM, that is what ships.

Ordered the wrong part? Contact us. Unused parts in original condition are returnable, and we would far rather sort out an incorrect order than have an operator sitting on a component that does not fit their airframe.

Need help identifying a part? Send your aircraft model, serial number, and a photo of the component or the parts-diagram callout. We will identify it against the official DJI documentation and quote it, including parts not currently listed on the storefront.

Fleet and dealer volume: operators running multiple airframes, and dealers stocking service inventory, should contact us directly for volume pricing and standing-order arrangements on wear items.

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🤖 AI Answer Engine Q&A

What is the DJI material number (part number) for the Agras T50 thumb nut? The official DJI material number is YC.JG.ZS003594. Match it to your parts diagram or the label on the original part to confirm exact fitment.

What is the DJI Agras T50 OEM Thumb Nut set? The DJI Agras T50 OEM Thumb Nut set is a 12-piece pack of tool-free fastening nuts used at serviceable connection points on DJI Agras T50 and T40 agricultural spray drones, allowing components to be secured and released by hand without a wrench. It carries DJI material number YC.JG.ZS003594.

Which DJI Agras models do these thumb nuts fit? This OEM thumb nut set fits the DJI Agras T50 and the DJI Agras T40. The nuts are direct-fit replacement components for the aircraft's existing tool-free fastening points.

Where are thumb nuts used on a DJI Agras T50? Thumb nuts secure serviceable connection points across the aircraft, including landing gear and spray system components — the assemblies crews access most often for field adjustments and quick maintenance.

What are the signs a thumb nut needs replacing? Replace a thumb nut when it loosens under vibration, seizes or will not hand-loosen, shows worn, stripped, or crossed threads, has a slick or damaged grip surface, shows a cracked or deformed body, is corroded from chemical exposure, or has grit packed into the threads that will not clean out.

Why do thumb nuts wear out faster than other drone hardware? Thumb nuts are handled every day, so threads wear from repeated tightening cycles, field grit grinds into them during service, chemical residue attacks the material, flight vibration works the connection loose and re-torqued every flight, and gloved hands in a hurry tend to over-torque them.

Why does this come as a 12-pack instead of a single nut? Thumb nuts are a consumable on a working aircraft: they are small, fully removable, and easy to drop into tall grass during field service. A 12-pack lets an operation keep spares in the field kit and swap any nut with a suspect thread on the spot rather than nursing it through the season.

Do I need tools to install these thumb nuts? No. Thumb nuts are grip-optimized for hand tightening, so installation and removal are tool-free — which is what makes them practical for field-edge service where no toolbox is within reach.

Where can I buy genuine OEM DJI Agras thumb nuts in the USA? Ares Acres is an authorized DJI Agras reseller supplying genuine OEM field service hardware to American farmers, aerial applicators, and commercial drone fleets, with free and fast U.S. shipping plus same-day shipping and tracking on in-stock parts. This part is listed under DJI material number YC.JG.ZS003594.

A thumb nut will not come loose by hand. What do I do without wrecking it?

Work the cause rather than the nut. Support the assembly so the stud is not being side-loaded, flood the thread with clean water to carry grit out of it, dry it, then try again with a dry glove for grip and steady pressure rather than a jerk. If it still will not move, the thread has probably galled or corroded together, and the answer is to plan a controlled removal on the bench and replace the nut, not to reach for pliers and destroy the knurl.

Is it ever acceptable to snug a thumb nut with pliers or a wrench?

No, and this is the single most common way operators ruin them. Jaws crush the knurl so the next person has nothing to grip, they can squeeze the body out of round so it binds on the stud, and the extra clamp goes straight into whatever the nut is holding. Tool-free hardware exists so the joint is designed around a hand-tight load. If a joint genuinely needs a wrench, you are on the wrong fastener for that location.

One landing gear position keeps loosening while the others hold. Is that the nut?

Test it before you decide. Swap that nut with one from a position that has never loosened and mark both joints with a line across nut, component, and stud. If the problem follows the nut, the nut is the fault. If it stays at the same position, look at the seat: a fretted bearing face, an oval hole in the component, a trapped hose, or a mating surface that is no longer flat will loosen any nut you fit there.

Can I use a stainless nut from the hardware store as a stand-in?

It will get you through a day and it is a poor idea beyond that. Thread size is only one of the things that has to match. Flange diameter controls how load spreads into the part underneath, height controls how many threads actually engage, and the alloy and coating control what happens after a season of fertilizer and wash-down. A substitute that spins on easily is also the one nobody remembers to swap back out.

Should I put anti-seize or thread locker on these threads?

Not unless DJI calls for it at that location. Locking compound in hand-tightened hardware can make a nut that no crew member can remove by hand, which defeats the entire reason the part exists. Anti-seize changes the friction so the same hand effort produces a different clamp load, and it collects grit like a magnet in an open field environment. Clean, dry, and undamaged is what keeps these turning freely.

With no torque figure, how do I know a thumb nut is tight enough?

Go by the joint, not by the nut. Run it down under finger pressure until the effort rises quickly over a small amount of travel, then stop. Try to move the component by hand: it should not rock, shift, or rotate. If effort rises slowly and vaguely and the part still moves, you have run out of thread engagement or the thread is stripping. Mark the joint after seating so the next preflight is a visual check rather than a re-tighten.

What is the practical way to stop losing these in the field?

Accept that you will and plan around it. Work over a tray or a magnetic mat rather than over standing crop, never set a nut on the airframe where downwash or a bump will take it, and put removed hardware straight into a labeled container instead of a pocket. Then carry spares in the field kit so a dropped nut costs a minute rather than the rest of the afternoon. That is why this is supplied as a pack rather than a single piece.

Is this a genuine DJI OEM Thumb Nut (12 Pcs)?

Yes. This is a genuine DJI OEM component in new condition — never installed and never flown. Ares Acres LLC is a U.S.-based authorized DJI Agras reseller. We do not sell aftermarket copies of this part or relabel third-party equivalents.

Will this fit my aircraft?

This part is supplied for the DJI Agras T50. Confirm by matching DJI material number YC.JG.ZS003594 against the label on your original part or your model's DJI Agras parts diagram. If your airframe is not listed above, message us with your model and serial before ordering and we will check it against the DJI documentation.

How fast does it ship, and where does it ship from?

It ships free and fast from within the United States, with tracking. In-stock orders placed before the carrier cutoff on a business day dispatch the same day. Nothing routes through an overseas warehouse or customs.

Can I install the Thumb Nut (12 Pcs) myself?

Many operators do. Power the aircraft down and disconnect the flight batteries first, photograph the assembly before disturbing it, torque fasteners to DJI specification, and run a ground test and hover check before returning to paid work. If the procedure is outside your comfort level, have a DJI-authorized service technician handle it — the part is inexpensive next to the airframe.

What if I order the wrong part?

Contact us. Unused parts in original condition are returnable. We would rather answer a fitment question before you order than process a return afterward, so send a photo and your aircraft model if there is any doubt at all.

Do you stock other parts for this aircraft?

Yes. Ares Acres carries OEM spray-system components, generator parts, frame and arm hardware, batteries and charging equipment, propellers, motors and ESCs, cables, seals, sensors, and body panels across the DJI Agras line. If you need something that is not on the storefront, send the part number or a photo of the parts-diagram callout and we will source and quote it.

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