{"product_id":"electro-hardware-mp441m03f21m3-female-hex-standoff-m3","title":"Electro Hardware MP441M03F21M3 Female Hex Standoff M3","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ELECTRO HARDWARE MP441M03F21M3 is a female hex circuit board standoff designed to create measured spacing between PCBs and mounting surfaces in electronic assemblies. Machined from brass with a clear zinc chromate finish meeting ASTM B633 Type 1 and QQ-B-626 Comp 22 standards, this standoff provides corrosion resistance alongside reliable electrical isolation. The M3 x 0.5 fully threaded female interior runs the full 21 mm body length, allowing a mating male screw to engage from either end. The hex body profile measures 4.5 mm across flats, providing a clean grip surface for installation with standard hex tooling.\u003c\/p\u003e\n\u003cp\u003eThis standoff is suited for use in control boards, relay panels, industrial enclosures, and electronic equipment where consistent PCB-to-surface standoff height is required. The metric M3 x 0.5 thread size is common in lightweight electronic assemblies, telecom hardware, and automation control panels. Electricians, electronics technicians, and panel builders typically install these during board mounting, chassis assembly, or replacement of damaged standoffs on existing equipment.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eM3 x 0.5 fully threaded female interior with 21 mm thread depth\u003c\/li\u003e\n  \u003cli\u003e21 mm overall length for precise PCB standoff height\u003c\/li\u003e\n  \u003cli\u003eHexagonal body at 4.5 mm width across flats for wrench engagement\u003c\/li\u003e\n  \u003cli\u003eBrass construction with clear zinc chromate finish for corrosion resistance\u003c\/li\u003e\n  \u003cli\u003eMeets ASTM B633 Type 1 and QQ-B-626 Comp 22 standards\u003c\/li\u003e\n  \u003cli\u003eLength tolerance of -0.13 to 0.13 mm for consistent stack-up accuracy\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in electronic assemblies requiring M3 x 0.5 metric female standoffs, including circuit board mounting applications where a 21 mm standoff height is specified.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstall and remove using a hex wrench or nut driver sized for 4.5 mm across flats to avoid rounding the hex body. Always power down and discharge capacitors in the assembly before servicing circuit boards or replacing standoffs. Do not overtighten mating screws into the female threads, as brass is softer than steel and susceptible to thread damage under excessive torque. Inspect threads for debris or damage before assembly to ensure full thread engagement.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\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: 21 mm (approximately 0.827 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Depth\u003c\/strong\u003e: 21 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBody Shape\u003c\/strong\u003e: Hex\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\u003eLength Tolerance\u003c\/strong\u003e: -0.13 to 0.13 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Brass\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Clear Zinc Chromate\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSystem of Measurement\u003c\/strong\u003e: Metric\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: ASTM B633 Type 1, QQ-B-626 Comp 22\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.00656 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 31161816\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\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: MP441M03F21M3\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ELECTRO HARDWARE","offers":[{"title":"Default Title","offer_id":51743979077938,"sku":"MP441M03F21M3","price":75.44,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/9fc684cde045c4d1faff9ecaafacd443_9abdd8c1-7899-48c0-bc2c-e3504e8e61b8.jpg?v=1788852292","url":"https:\/\/voomisupply.com\/products\/electro-hardware-mp441m03f21m3-female-hex-standoff-m3","provider":"Voomi Supply","version":"1.0","type":"link"}