{"product_id":"m4-40-nut-dia-4mm-length-40mm","title":"M4×40MM Nut – Drone Fastening Nut for FPV, UAV \u0026 DIY Electronics","description":"\u003ch1 data-path-to-node=\"3\"\u003eM4×40MM Heavy-Duty Fastener – Drone Hardware for FPV, UAV \u0026amp; DIY Electronics\u003c\/h1\u003e\n\u003cp data-path-to-node=\"4\"\u003eWhen engineering heavy-lift commercial UAVs, cinematic octocopters, or industrial automation control panels, standard micro-hardware simply cannot withstand the physical load. Larger aircraft carrying heavy payloads—like high-capacity batteries, multi-axis gimbals, or specialized scanning equipment—experience immense torsional twisting and structural stress. To bridge wide multi-plated frames and anchor structural elements securely, engineers rely on the \u003cb data-path-to-node=\"4\" data-index-in-node=\"459\"\u003eM4×40MM Heavy-Duty Fastener – Drone Hardware for FPV, UAV \u0026amp; DIY Electronics\u003c\/b\u003e.\u003c\/p\u003e\n\u003cp data-path-to-node=\"5\"\u003eBoasting a substantial 40mm functional length and a robust M4 metric thread diameter, this heavy-duty hardware component provides the necessary reach and clamping power to bind high-stress structural joints. Whether you are anchoring thick carbon fiber arm reinforcements on an agricultural drone, gapping multi-layer power distribution boards, or assembling large DIY electronics enclosures, this rugged drone part is a necessity for professional-grade, high-load industrial builds.\u003c\/p\u003e\n\u003ch2 data-path-to-node=\"7\"\u003eOvercoming High-Load Stress in Large-Scale UAV Engineering\u003c\/h2\u003e\n\u003cp data-path-to-node=\"8\"\u003eIn standard 5-inch racing mini-quads, M3 hardware is the baseline standard. However, when building enterprise-level UAVs with motor sizes exceeding 28mm or 30mm, the rotational torque generated can instantly shear or bend thin fasteners.\u003c\/p\u003e\n\u003cp data-path-to-node=\"9\"\u003eThe \u003cb data-path-to-node=\"9\" data-index-in-node=\"4\"\u003eM4×40MM heavy-duty drone fastener\u003c\/b\u003e is engineered specifically to handle high-tensile and high-shear mechanical loads:\u003c\/p\u003e\n\u003cul data-path-to-node=\"10\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"10,0,0\"\u003e\u003cb data-path-to-node=\"10,0,0\" data-index-in-node=\"0\"\u003eExtended 40mm Length:\u003c\/b\u003e Ideal for passing completely through multiple layers of thick carbon fiber plates, structural arm mounts, and isolation dampeners.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"10,1,0\"\u003e\u003cb data-path-to-node=\"10,1,0\" data-index-in-node=\"0\"\u003eRobust M4 Profile:\u003c\/b\u003e Drastically increases the cross-sectional strength of your mounting points, ensuring your aircraft remains rigid during high-speed autonomous bank turns.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"10,2,0\"\u003e\u003cb data-path-to-node=\"10,2,0\" data-index-in-node=\"0\"\u003eAnti-Oxidization Coating:\u003c\/b\u003e Treated with a specialized surface finish to shield the underlying metal from field moisture, high humidity, and outdoor air exposure.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-path-to-node=\"12\"\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable data-path-to-node=\"13\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMechanical Parameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eEngineering Specification Details\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"13,1,0,0\"\u003e\u003cb data-path-to-node=\"13,1,0,0\" data-index-in-node=\"0\"\u003eProduct Model Name\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"13,1,1,0\"\u003eM4×40MM Heavy-Duty Metric Structural Fastener\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"13,2,0,0\"\u003e\u003cb data-path-to-node=\"13,2,0,0\" data-index-in-node=\"0\"\u003eThread Size Standard\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"13,2,1,0\"\u003eM4 Metric (4mm Outer Thread Profile)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"13,3,0,0\"\u003e\u003cb data-path-to-node=\"13,3,0,0\" data-index-in-node=\"0\"\u003eFunctional Element Length\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"13,3,1,0\"\u003e40mm (Extended Reach for Deep Stacks \u0026amp; Rigid Frames)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"13,4,0,0\"\u003e\u003cb data-path-to-node=\"13,4,0,0\" data-index-in-node=\"0\"\u003eApplication Ecosystem\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"13,4,1,0\"\u003eLarge-Scale Industrial UAVs, Heavy-Lift Drones, Robotics\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"13,5,0,0\"\u003e\u003cb data-path-to-node=\"13,5,0,0\" data-index-in-node=\"0\"\u003eMaterial Properties\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"13,5,1,0\"\u003ePremium High-Tensile Structural Alloy Steel\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"13,6,0,0\"\u003e\u003cb data-path-to-node=\"13,6,0,0\" data-index-in-node=\"0\"\u003eEnvironmental Protection\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"13,6,1,0\"\u003eAnti-Corrosion Chemical Passivation Layer\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2 data-path-to-node=\"15\"\u003eProtecting Industrial Electronics \u0026amp; Power Management Hubs\u003c\/h2\u003e\n\u003cp data-path-to-node=\"16\"\u003eIn massive UAV platforms, the central power distribution system often manages hundreds of amps flowing to high-voltage speed controllers. These setups require large power distribution boards (PDBs) and heavy-duty flight controllers to be spaced widely apart to optimize thermal dissipation and airflow.\u003c\/p\u003e\n\u003cp data-path-to-node=\"17\"\u003eThe 40mm length of this M4 hardware element allows you to create wide, safe air gaps between your high-voltage components. This structural spacing prevents heat saturation from transferring between boards and completely eliminates the risk of high-voltage arcing across closely stacked PCBs. Furthermore, the thick M4 core guarantees that heavy power cables tugging on the internal electronics tower during rapid flight maneuvers will not cause the mounting stack to flex or collapse.\u003c\/p\u003e\n\u003ch2 data-path-to-node=\"19\"\u003eFrequently Asked Questions (FAQs)\u003c\/h2\u003e\n\u003ch3 data-path-to-node=\"20\"\u003eIs this M4 size compatible with standard 5-inch racing drones?\u003c\/h3\u003e\n\u003cp data-path-to-node=\"21\"\u003eNo. Standard mini-quads and mini FPV racing frames almost exclusively use smaller M3 hardware. This heavy-duty M4×40MM size is custom-tailored for larger 7-inch, 10-inch, agricultural, or professional cinematic cinema-lifter drones.\u003c\/p\u003e\n\u003ch3 data-path-to-node=\"22\"\u003eCan I cut this 40mm fastener down if it is slightly too long for my stack?\u003c\/h3\u003e\n\u003cp data-path-to-node=\"23\"\u003eYes. If your project modifications require a slightly shorter length (like 35mm), you can carefully cut the alloy down using a standard rotary tool or a metal hacksaw, followed by a light filing of the end threads.\u003c\/p\u003e\n\u003cp data-path-to-node=\"25\"\u003e\u003cb data-path-to-node=\"25\" data-index-in-node=\"0\"\u003eForm an unyielding bond for your enterprise fleets. Add this heavy-duty M4×40MM structural fastener to your cart today!\u003c\/b\u003e\u003c\/p\u003e","brand":"Droneyards","offers":[{"title":"Default Title","offer_id":54630152962420,"sku":"FY_ Nut M4*40\/014","price":10.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0969\/6477\/2212\/files\/download_4_6686f3cc-0214-426d-8b78-694c34092e15.avif?v=1779264704","url":"https:\/\/www.fpvyards.in\/products\/m4-40-nut-dia-4mm-length-40mm","provider":"FPV Yards","version":"1.0","type":"link"}