{"product_id":"electro-hardware-mp409m03f21m2-5-female-hex-standoff-m2-5","title":"Electro Hardware MP409M03F21M2.5 Female Hex Standoff M2.5","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ELECTRO HARDWARE MP409M03F21M2.5 is a female hex circuit board standoff designed to provide threaded mounting points between PCBs and chassis 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 delivers corrosion resistance and reliable thread engagement in compact spaces. The M2.5 x 0.45 metric thread runs the full 5 mm body length, giving maximum thread engagement for the overall length. At 4.5 mm width across flats, it accepts a standard hex driver or wrench for secure, torque-controlled installation without damage to the board.\u003c\/p\u003e\u003cp\u003eThis standoff is used in PCB stacking and panel-mount applications across industrial controls, HVAC control boards, electrical enclosures, and similar electronic assemblies requiring a precise metric standoff. The fully threaded female bore accepts an M2.5 fastener from both ends, making it suitable for through-stack configurations or single-sided mounting scenarios. Technicians working on control board replacements and electronic panel assemblies in commercial and residential equipment will find this a direct metric-spec solution where imperial standoffs are not appropriate.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eFully threaded female bore  -  M2.5 x 0.45 metric thread, 5 mm thread depth for full engagement\u003c\/li\u003e\n\u003cli\u003eHex body shape with 4.5 mm width across flats for wrench or hex driver installation\u003c\/li\u003e\n\u003cli\u003eBrass construction with clear zinc chromate finish per ASTM B633 Type 1 and QQ-B-626 Comp 22\u003c\/li\u003e\n\u003cli\u003e5 mm overall length suits tight board-to-board or board-to-chassis spacing requirements\u003c\/li\u003e\n\u003cli\u003eLength tolerance of -0.13 to 0.13 mm for consistent stack height across multiple standoffs\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a metric M2.5 x 0.45 female hex standoff for PCB mounting applications requiring a 5 mm overall length brass standoff with zinc finish.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is typically performed by electronics technicians or field service technicians working on control boards and electrical enclosures. De-energize all circuits before handling or replacing standoffs on live boards. Use a correctly sized hex wrench or nut driver matched to the 4.5 mm across-flats dimension to avoid rounding the hex. Do not over-torque into PCB mounting holes, as brass threads can be damaged by excessive force.\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: M2.5 x 0.45\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 5 mm (approximately 0.197 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Depth\u003c\/strong\u003e: 5 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\u003eStandards\u003c\/strong\u003e: ASTM B633 Type 1, QQ-B-626 Comp 22\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: 0.00232 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 31161816\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: MP409M03F21M2.5\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ELECTRO HARDWARE","offers":[{"title":"Default Title","offer_id":51739843789106,"sku":"MP409M03F21M2.5","price":22.84,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/61345a94658a0e1365ed1a877d392f2a.jpg?v=1788819520","url":"https:\/\/voomisupply.com\/products\/electro-hardware-mp409m03f21m2-5-female-hex-standoff-m2-5","provider":"Voomi Supply","version":"1.0","type":"link"}