{"product_id":"electro-hardware-mp429m03f21m3-hex-standoff-m3-brass","title":"Electro Hardware MP429M03F21M3 Hex Standoff M3 Brass","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ELECTRO HARDWARE MP429M03F21M3 is a female hex circuit board standoff designed to create precise spacing between PCBs and mounting surfaces in electronic assemblies. Built from brass with a clear zinc chromate (zinc-plated) finish per ASTM B633 Type 1 and QQ-B-626 Comp 22, this standoff provides reliable electrical isolation and secure mechanical support. The metric M3 x 0.5 internal thread runs the full 15 mm body length, giving technicians complete thread engagement with standard M3 hardware. The hexagonal body measures 4.5 mm across flats, allowing installation and removal with standard hex drivers or wrenches. Electronics assemblers, field service technicians, and PCB integration specialists typically install this hardware in control panels, industrial enclosures, and circuit board assemblies.\u003c\/p\u003e\n\u003cp\u003eThis standoff is suited for use in metric-threaded PCB mounting applications where consistent board-to-board or board-to-chassis spacing is required. The fully threaded female design accepts M3 x 0.5 screws from both ends, making it appropriate for stacked board configurations as well as single-point standoff mounting. The brass construction combined with zinc plating provides corrosion resistance in light-duty indoor environments. Length tolerance is held to -0.13 mm to 0.13 mm, supporting assemblies where board clearance is critical.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eFemale hex body with M3 x 0.5 fully threaded bore, 15 mm thread depth\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\u003eHexagonal body at 4.5 mm across flats for wrench or driver installation\u003c\/li\u003e\n  \u003cli\u003eTight length tolerance of -0.13 mm to 0.13 mm for precise PCB spacing\u003c\/li\u003e\n  \u003cli\u003eMetric system of measurement, compatible with M3 hardware ecosystems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style metric standoff for use with M3 x 0.5 threaded fasteners in circuit board mounting and PCB stacking applications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eElectronics assemblers and field service technicians should power down and de-energize all equipment before installing or removing circuit board standoffs. Use a wrench or hex driver sized to 4.5 mm across flats to seat the standoff without over-torquing the brass body. Verify thread engagement on both mating fasteners before applying load. Follow applicable IPC assembly standards and equipment manufacturer guidelines for PCB mounting clearances.\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: 15 mm (approximately 0.59 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Depth\u003c\/strong\u003e: 15 mm (fully threaded)\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 0.18 inches)\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\u003eMaterial\u003c\/strong\u003e: Brass\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Clear Zinc Chromate (Zinc-Plated)\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: 0.00512 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: MP429M03F21M3\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ELECTRO HARDWARE","offers":[{"title":"Default Title","offer_id":51741141041458,"sku":"MP429M03F21M3","price":30.68,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/fb63c5af11185f894d1190362af36248.jpg?v=1788829575","url":"https:\/\/voomisupply.com\/products\/electro-hardware-mp429m03f21m3-hex-standoff-m3-brass","provider":"Voomi Supply","version":"1.0","type":"link"}