{"product_id":"m3-nuts-and-bolts-kit-200-piece-hardware-set-for-electronics","title":"M3 Nuts and Bolts Kit – 200 Piece Hardware Set for Electronics","description":"\u003ch1\u003eM3 Nuts and Bolts Kit – 200 Piece Electronics Hardware Set\u003c\/h1\u003e\n\n\u003cp class=\"product-lede\"\u003eA 200-piece M3 hardware kit with hex bolts (6-20 mm lengths) and nuts, essential for mounting Arduino, ESP32, Raspberry Pi boards, sensors, and 3D printed enclosures in prototyping projects.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable class=\"specs-table\"\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eStainless Steel (A2) or Zinc-plated Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003ePlain (stainless) or Zinc Plated\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eThread Size\u003c\/td\u003e\n\u003ctd\u003eM3 × 0.5 mm (standard metric coarse)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eBolt Lengths Included\u003c\/td\u003e\n\u003ctd\u003e6 mm, 10 mm, 12 mm, 16 mm, 20 mm (approx distribution)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eHead Type\u003c\/td\u003e\n\u003ctd\u003eHex Socket Cap (Allen key driven)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003e~200 pieces (mix of bolts and nuts)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eNut Type\u003c\/td\u003e\n\u003ctd\u003eHex nuts, M3 thread\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDrive Size (Hex Key)\u003c\/td\u003e\n\u003ctd\u003e2 mm (typically included or user-supplied)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSimple LED matrix stand:\u003c\/strong\u003e Secure an 8×8 matrix to a rigid base using M3 bolts and standoffs for a stable beginner display project.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeather station enclosure:\u003c\/strong\u003e Fasten an ESP32 and environmental sensors inside a 3D printed box, protected by M3 screws.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePi camera mount:\u003c\/strong\u003e Attach a Raspberry Pi camera module to a tripod or bracket with M3 bolts for time‑lapse or monitoring applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCBSE class 11‑12 electric circuit board:\u003c\/strong\u003e Mount battery holders, switches, and wiring on a wooden demonstration board using M3 hardware.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSmart irrigation prototype (SIH):\u003c\/strong\u003e Assemble a water‑resistant housing for soil moisture sensors and a microcontroller with M3 bolts for field deployments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003ctable class=\"compat-table\"\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePlatform\u003c\/th\u003e\n\u003cth\u003eCompatible\u003c\/th\u003e\n\u003cth\u003eConnection\u003c\/th\u003e\n\u003cth\u003eLibrary \/ Method\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eArduino Uno R3\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eM3 bolts through board mounting holes (3.2 mm)\u003c\/td\u003e\n\u003ctd\u003eN\/A (mechanical only)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eArduino Nano\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eM3 bolts through board mounting holes\u003c\/td\u003e\n\u003ctd\u003eN\/A (mechanical only)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eArduino Mega 2560\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eM3 bolts through board mounting holes\u003c\/td\u003e\n\u003ctd\u003eN\/A (mechanical only)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eESP8266 NodeMCU\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eM3 bolts through board mounting holes\u003c\/td\u003e\n\u003ctd\u003eN\/A (mechanical only)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eESP32 Dev Board\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eM3 bolts through board mounting holes\u003c\/td\u003e\n\u003ctd\u003eN\/A (mechanical only)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRaspberry Pi Pico\u003c\/td\u003e\n\u003ctd\u003eYes with bracket\u003c\/td\u003e\n\u003ctd\u003eUse PCB standoffs; Pico lacks direct M3 holes\u003c\/td\u003e\n\u003ctd\u003eN\/A (mechanical only)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRaspberry Pi 4 \/ 5\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eM3 bolts through board mounting holes\u003c\/td\u003e\n\u003ctd\u003eN\/A (mechanical only)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWiring and Interface Notes\u003c\/h2\u003e\n\u003cp\u003eM3 bolts are purely mechanical; they do not carry electrical signals. Use plastic or nylon washers when mounting on PCB boards near traces to prevent shorts. Tighten bolts to ~0.5 N·m torque to avoid stripping threads.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"faq\"\u003e\n  \u003cdiv class=\"faq-item\"\u003e\n    \u003ch3\u003eAre these bolts compatible with Arduino board mounting holes?\u003c\/h3\u003e\n    \u003cp\u003eYes, standard Arduino boards (Uno, Mega) have M3 clearance holes (3.2 mm). These bolts fit directly.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"faq-item\"\u003e\n    \u003ch3\u003eCan I use this kit for 3D printed projects?\u003c\/h3\u003e\n    \u003cp\u003eYes, M3 is the most common size for 3D printed enclosures and brackets. The included lengths accommodate wall thicknesses up to 6 mm.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@graph\": [\n    {\n      \"@type\": \"Product\",\n      \"@id\": \"https:\/\/compoden.in\/products\/m3-nuts-and-bolts-kit-200-piece-hardware-set-for-electronics#product\",\n      \"name\": \"M3 Nuts and Bolts Kit – 200 Piece Electronics Hardware Set\",\n      \"description\": \"200pc M3 nuts and bolts kit for Arduino, ESP32, Raspberry Pi. Hex bolts 6mm-20mm, nuts, stainless steel. Secure PCBs, sensors, enclosures. 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