{"product_id":"electro-hardware-mmf1305m03f21m3-hex-standoff-m3x0-5","title":"Electro Hardware MMF1305M03F21M3 Hex Standoff M3x0.5","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ELECTRO HARDWARE MMF1305M03F21M3 is a male-female hex circuit board standoff designed to space and secure printed circuit boards within enclosures and electronic assemblies. The male end threads into a mounting surface or lower board while the female end accepts the fastener from the upper board, creating a rigid, defined standoff distance. Machined from brass with a zinc-plated finish meeting ASTM B633 Type 1 and QQ-B-626 Comp 22 standards, this standoff provides corrosion resistance and reliable electrical grounding continuity. The M3x0.5 metric thread and 4.5 mm hex body make it compatible with standard M3 hardware and common hex drivers used in PCB assembly work.\u003c\/p\u003e\u003cp\u003eThis standoff is suited for use in residential and commercial electronic control boards, HVAC control modules, low-voltage electrical panels, and industrial enclosures where PCB-to-surface or PCB-to-PCB spacing is required. It is commonly installed during PCB assembly, control board replacement, or enclosure builds by electronics technicians, HVAC controls specialists, and electrical panel assemblers. The hex body shape allows precise torque application with standard hex drivers or nut drivers without risk of slipping or damaging nearby board traces.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eMale-female configuration supports board-to-surface or board-to-board stacking\u003c\/li\u003e\n\u003cli\u003eM3x0.5 metric thread on both male pin and female receptacle end\u003c\/li\u003e\n\u003cli\u003eBrass construction with zinc plating meets ASTM B633 Type 1 and QQ-B-626 Comp 22\u003c\/li\u003e\n\u003cli\u003eHex body profile at 4.5 mm across flats allows tool-driven installation without slippage\u003c\/li\u003e\n\u003cli\u003eOverall length of 11.76 mm with a 7.00 mm hex body and 4.76 mm male thread length\u003c\/li\u003e\n\u003cli\u003eLength tolerance held to -0.150 to 0.150 mm for consistent PCB standoff height\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard M3x0.5 metric hex standoff for use in circuit board mounting applications requiring brass construction and zinc-plated finish per ASTM B633 Type 1 and QQ-B-626 Comp 22 specifications.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is typically performed by electronics technicians or controls specialists using a hex driver or nut driver sized for 4.5 mm across flats. Power down and de-energize all circuits before installing or removing standoffs from active control boards. Avoid over-torquing, as brass threads can strip or crack the PCB mounting hole under excessive force. Minimum order quantity is 10 units.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: M3x0.5\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Type\u003c\/strong\u003e: Male-Female\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 11.76 mm (approximately 0.463 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody Length\u003c\/strong\u003e: 7.00 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Length (Male)\u003c\/strong\u003e: 4.76 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Depth (Female)\u003c\/strong\u003e: 6.40 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth Across Flats\u003c\/strong\u003e: 4.50 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: Brass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Zinc-Plated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength Tolerance\u003c\/strong\u003e: -0.150 to 0.150 mm\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: 0.00376 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum Order Quantity\u003c\/strong\u003e: 10\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: MMF1305M03F21M3\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ELECTRO HARDWARE","offers":[{"title":"Default Title","offer_id":51743206408498,"sku":"MMF1305M03F21M3","price":20.87,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/058618b61ed1e7530ddb8e1d1ac45e5b_aa24ba96-2dc4-4345-a999-5d53794df719.jpg?v=1788843935","url":"https:\/\/voomisupply.com\/products\/electro-hardware-mmf1305m03f21m3-hex-standoff-m3x0-5","provider":"Voomi Supply","version":"1.0","type":"link"}