{"product_id":"electro-hardware-mp431m03f21m3-female-hex-standoff-m3x0-5","title":"Electro Hardware MP431M03F21M3 Female Hex Standoff M3x0.5","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ELECTRO HARDWARE MP431M03F21M3 is a female hex circuit board standoff designed to create fixed spacing between PCBs, enclosure panels, 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 accepts M3 x 0.5 metric threads and provides a fully threaded depth of 16 mm through its entire 16 mm overall length. The hexagonal body measures 4.5 mm across flats, allowing a standard wrench or nut driver to seat and torque it securely. Electronics assemblers, panel builders, and electrical enclosure technicians install these standoffs in control boards, industrial electronics, and HVAC circuit board assemblies.\u003c\/p\u003e\n\u003cp\u003eThis standoff is suited for metric-threaded PCB mounting applications in both light industrial and commercial electronic equipment. It is commonly installed in control panel assemblies, relay boards, variable frequency drives, and HVAC control board housings where consistent board-to-surface clearance is required. The fully threaded female bore allows an M3 x 0.5 male screw to engage through the entire standoff length, giving installers flexible mounting depth. The brass base material combined with zinc plating provides corrosion resistance appropriate for indoor enclosure environments.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eFemale hex body with M3 x 0.5 internal thread, fully threaded to 16 mm depth\u003c\/li\u003e\n  \u003cli\u003eOverall length of 16 mm provides consistent board-to-panel standoff spacing\u003c\/li\u003e\n  \u003cli\u003eHex body width of 4.5 mm across flats allows standard wrench or nut driver installation\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 finish standards\u003c\/li\u003e\n  \u003cli\u003eMetric dimensioning suitable for metric-fastener PCB and panel assemblies\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in any metric-threaded PCB or panel mounting application requiring M3 x 0.5 female standoffs with a 16 mm overall length and hex drive body.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by electronics assemblers and panel builders using a wrench or nut driver sized for a 4.5 mm hex body. De-energize and discharge all circuits completely before handling circuit boards or installing standoffs in live enclosures. Avoid over-torquing brass standoffs, as the material is softer than steel and the threads can strip under excessive force. Follow applicable electrical enclosure and panel assembly standards for your jurisdiction.\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\u003eThread Depth\u003c\/strong\u003e: 16 mm (fully threaded)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 16 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\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: 0.012 pounds\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: MP431M03F21M3\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ELECTRO HARDWARE","offers":[{"title":"Default Title","offer_id":51739899986226,"sku":"MP431M03F21M3","price":30.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/f36c977e9ea18822da621bf56926ba95.jpg?v=1788820194","url":"https:\/\/voomisupply.com\/products\/electro-hardware-mp431m03f21m3-female-hex-standoff-m3x0-5","provider":"Voomi Supply","version":"1.0","type":"link"}