{"product_id":"electro-hardware-mp421m19f16m3-female-hex-standoff-m3","title":"Electro Hardware MP421M19F16M3 Female Hex Standoff M3","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ELECTRO HARDWARE MP421M19F16M3 is a female hex circuit board standoff designed to create secure, measured spacing between PCBs and mounting surfaces or between stacked circuit boards. Manufactured from nylon with a plain, uncoated finish, this standoff features a fully threaded M3 x 0.5 female thread running the full 11 mm thread depth. The hexagonal body measures 4.5 mm across flats, allowing installation and removal with standard hex drivers or nut drivers. This fastener meets MIL-P-17091B requirements and is suited for electronics assembly, control board mounting, and low-voltage panel builds where non-conductive standoffs are required.\u003c\/p\u003e\u003cp\u003eThis standoff is used in residential and commercial electronics assembly applications where nylon construction is specified to prevent electrical conductivity between a circuit board and its mounting chassis. Typical installation scenarios include control board assemblies in HVAC equipment, industrial enclosures, and embedded electronics where the 11 mm overall length provides the required PCB clearance. Electricians, electronics technicians, and panel builders working on control systems and low-voltage wiring assemblies commonly install this type of fastener.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eFully threaded M3 x 0.5 female thread with 11 mm thread depth for secure PCB engagement\u003c\/li\u003e\n\u003cli\u003eNylon construction provides electrical isolation between board and mounting surface\u003c\/li\u003e\n\u003cli\u003eHexagonal body at 4.5 mm across flats allows standard tool installation and removal\u003c\/li\u003e\n\u003cli\u003ePlain, uncoated finish suitable for indoor electronics and control panel environments\u003c\/li\u003e\n\u003cli\u003eMeets MIL-P-17091B fastener standard\u003c\/li\u003e\n\u003cli\u003eLength tolerance of -0.13 mm to 0.13 mm ensures consistent board spacing\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard M3 x 0.5 female hex nylon standoff for use in circuit board mounting applications requiring non-conductive, metric-threaded fasteners conforming to MIL-P-17091B.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by electronics technicians or electricians working on control panel assemblies. Always de-energize the equipment before handling circuit boards or installing standoffs. Use a hex driver or nut driver sized for 4.5 mm across flats to avoid deforming the nylon hex body. Do not overtighten nylon standoffs, as the material is subject to thread stripping under excessive torque.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Type\u003c\/strong\u003e: Female\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: M3 x 0.5\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 11 mm (approximately 0.433 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Depth\u003c\/strong\u003e: 11 mm (approximately 0.433 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth Across Flats\u003c\/strong\u003e: 4.5 mm (approximately 0.177 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody Shape\u003c\/strong\u003e: Hex\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Nylon\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: 101\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Plain, Bright\/Uncoated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTensile Strength\u003c\/strong\u003e: 16500 psi\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength Tolerance\u003c\/strong\u003e: -0.13 mm to 0.13 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFastener Standard\u003c\/strong\u003e: MIL-P-17091B\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem of Measurement\u003c\/strong\u003e: Metric\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.0001 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: ELECTRO HARDWARE\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: MP421M19F16M3\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ELECTRO HARDWARE","offers":[{"title":"Default Title","offer_id":51750594609458,"sku":"MP421M19F16M3","price":28.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/6615e02289ce84fe730411915da9ccae_1d24358c-00a0-4aa5-bff5-746e186649e8.jpg?v=1788917128","url":"https:\/\/voomisupply.com\/products\/electro-hardware-mp421m19f16m3-female-hex-standoff-m3","provider":"Voomi Supply","version":"1.0","type":"link"}