{"product_id":"button-head-3-20","title":"M3 x 20mm Button Head Screw – High Strength Steel Socket Head Fastener for Drone, Robotics \u0026 Electronics","description":"\u003cblockquote data-path-to-node=\"5\"\u003e\u003c\/blockquote\u003e\n\u003ch1 data-path-to-node=\"3\"\u003eM3 x 20mm Button Head Screw – High Strength Steel Socket Head Fastener for Drone, Robotics \u0026amp; Electronics\u003c\/h1\u003e\n\u003cp data-path-to-node=\"4\"\u003eWhen engineering high-velocity FPV freestyle drones, intricate robotic assemblies, or compact DIY electronic enclosures, structural fastening reliability dictates your system's survival. Modern multirotor aircraft and precision automated systems subject their central chassis arrays to extreme high-frequency vibrations from high-KV brushless motors and sudden high-G deceleration stops. Under these grueling physical conditions, sub-standard hardware components can easily stretch, strip, or slip under mechanical tension, causing loose frame geometries, severe sensor signal noise, or total mid-air component failure.\u003c\/p\u003e\n\u003cp data-path-to-node=\"5\"\u003eThe ultimate low-profile structural solution for tight spaces is the \u003cb data-path-to-node=\"5\" data-index-in-node=\"69\"\u003eM3 x 20mm Button Head Screw – High Strength Steel Socket Head Fastener for Drone, Robotics \u0026amp; Electronics\u003c\/b\u003e. Forged from premium structural-grade steel, this precision metric bolt delivers massive clamping torque and high shear resistance across condensed vertical profiles while keeping your external layouts clean, streamlined, and completely flush. Whether you are building a low-profile electronics stack, clamping dual carbon fiber plate sections, or constructing rigid robotics servo grids, this essential hardware component provides the optimal reach and thread security required for a professional, crash-resistant build.\u003c\/p\u003e\n\u003ch2 data-path-to-node=\"7\"\u003eThe Aerodynamic \u0026amp; Mechanical Advantages of the 20mm Button Head Profile\u003c\/h2\u003e\n\u003cp data-path-to-node=\"8\"\u003eIn condensed hardware engineering and quadcopter assembly, selecting the right screw head profile can prevent major design failures. Standard socket cap screws protrude significantly from the bottom plate of the frame, creating sharp catch points that can tear wires, snag battery straps, or slice through expensive LiPo battery straps during hard landings.\u003c\/p\u003e\n\u003cp data-path-to-node=\"9\"\u003eThe \u003cb data-path-to-node=\"9\" data-index-in-node=\"4\"\u003eM3 x 20mm button head steel screw\u003c\/b\u003e completely eliminates these vulnerabilities:\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\"\u003eLow-Drag Dome Shape:\u003c\/b\u003e Sits flush against your structural plate surfaces, minimizing snags on battery wires and landing paths while preserving clean system aerodynamics.\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\"\u003eUniform Clamping Footprint:\u003c\/b\u003e Spreads crushing pressures uniformly over a broader footprint, preventing the screw from micro-fracturing or crushing fragile woven carbon fiber plates under high torque.\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\"\u003eOptimized 20mm Low-Profile Reach:\u003c\/b\u003e Offers the exact vertical clearance needed to run an unbroken, continuous anchoring line across standard low-profile electronics setups, maximizing your central stack’s structural safety.\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 Identifier\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"13,1,1,0\"\u003eM3 x 20mm Button Head Fastener Series\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\"\u003eCore Thread Diameter\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"13,2,1,0\"\u003eM3 Precision Metric Standard (3mm Width)\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\"\u003e20mm Low-Profile Threaded Shaft (Excluding Head)\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\"\u003eHead Configuration Style\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"13,4,1,0\"\u003eLow-Profile Rounded Button Head (Hex Socket Drive)\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 Build Quality\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"13,5,1,0\"\u003eHigh-Tensile Heavy-Duty Steel Composite\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\"\u003eWeatherproof Anti-Corrosion Surface Finish\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\"\u003eIsolating Sensitive Gyros and Internal Power Infrastructures\u003c\/h2\u003e\n\u003cp data-path-to-node=\"16\"\u003eModern FPV flight stacks handle immense data processing and high-voltage power filtration simultaneously. Delicate processing boards rely on a completely stable, immovable frame bed to interpret gyro tracking data correctly.\u003c\/p\u003e\n\u003cp data-path-to-node=\"17\"\u003eIf your structural core screws flex or back out, raw motor harmonics will bypass your silicone damping rings. This injects heavy background data noise directly into your flight computer's PID loops, which manifests as erratic throttle responses or sudden mid-air twitches. Clamping your primary columns down with our premium M3 20mm fasteners locks your frame components together as a single solid unit. This rigid stabilization ensures that downstream voltage devices remain completely isolated from frame flex, delivering a beautiful, line-free FPV video feed to your monitoring goggles.\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 M3 screw compatible with standard 5-inch racing and freestyle drones?\u003c\/h3\u003e\n\u003cp data-path-to-node=\"21\"\u003eYes! The M3 thread diameter is the absolute global standard for 3-inch to 7-inch FPV drone assemblies. This 20mm length is highly prized by custom builders who want to mount a standalone electronic component or a slammed low-profile stack cleanly with an ultra-tight clearance profile.\u003c\/p\u003e\n\u003ch3 data-path-to-node=\"22\"\u003eHow is the 20mm length measured on button head screws?\u003c\/h3\u003e\n\u003cp data-path-to-node=\"23\"\u003eIn metric button head engineering standards, the 20mm functional length is measured starting exactly from the flat underside of the rounded dome head down to the very tip of the threaded shaft. The thickness of the dome head itself is never included in the length calculation.\u003c\/p\u003e\n\u003cp data-path-to-node=\"25\"\u003e\u003cb data-path-to-node=\"25\" data-index-in-node=\"0\"\u003eAchieve failure-proof structural clamping with high-strength hardware. Add this premium M3 x 20mm steel button head screw kit to your cart today!\u003c\/b\u003e\u003c\/p\u003e","brand":"Droneyards","offers":[{"title":"Default Title","offer_id":54618913112436,"sku":"FY_Screw_Button Head 3*20\/003","price":7.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0969\/6477\/2212\/files\/M3_X_25mm_Hex_Allen_Button_Head_Hight_Tensile_10.9_Black_Oxide_Screw_130c26b5-c073-4071-b484-059a6aa7390e.webp?v=1778937512","url":"https:\/\/www.fpvyards.in\/products\/button-head-3-20","provider":"FPV Yards","version":"1.0","type":"link"}