{"product_id":"electro-hardware-mm1309m12-msc-hex-standoff-4-40-1-4in-steel","title":"Electro Hardware MM1309M12-MSC Hex Standoff 4-40 1\/4in Steel","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ELECTRO HARDWARE MM1309M12-MSC is a male-male hex circuit board standoff designed for use in electronic assemblies and PCB mounting applications. This fastener accepts a 4-40 thread on both ends and features a hexagonal body shape that allows for wrench engagement during installation. The overall length is 0.25 inches with a body length of 0.25 inches and a width across flats of 0.1875 inches. Constructed from Grade 2 steel with a zinc-plated finish per QQ-S-633, this standoff provides corrosion resistance in typical indoor electronics environments. It is sized and threaded to work with standard 4-40 fastener hardware common in PCB and chassis assembly work.\u003c\/p\u003e\n\u003cp\u003eThis standoff is used in residential and commercial electronics assemblies where circuit boards require secure, fixed-height separation from a chassis, panel, or secondary board. Typical installation scenarios include control boards, instrumentation enclosures, and electronic subassemblies in HVAC control panels, electrical equipment, and similar trade applications. The compact 0.25-inch OAL makes it suitable for tight-clearance PCB stacking. It ships individually and is available in single-unit quantities.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eMale-male hex configuration with 4-40 threading on both ends for secure double-sided fastening\u003c\/li\u003e\n  \u003cli\u003eHexagonal body shape allows wrench engagement for torque-controlled installation\u003c\/li\u003e\n  \u003cli\u003eGrade 2 steel construction meets QQ-S-633 fastener standard\u003c\/li\u003e\n  \u003cli\u003eZinc-plated finish provides corrosion resistance for indoor electronics environments\u003c\/li\u003e\n  \u003cli\u003eCompact 0.25-inch overall length suits tight PCB clearance applications\u003c\/li\u003e\n  \u003cli\u003eLength tolerance of -0.005 to 0.005 inches ensures consistent stack height\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard 4-40 male-male hex standoff compatible with circuit boards and chassis panels drilled and tapped to 4-40 specifications using the inch measurement system.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by electronics technicians or electricians working on control panel and PCB assemblies. Always de-energize and discharge the circuit board assembly before installing or removing standoffs. A hex wrench or nut driver sized for 3\/16-inch across flats is recommended for proper engagement. Avoid over-tightening, as the 4-40 thread and small body diameter can be susceptible to thread damage if excessive force is applied.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Type\u003c\/strong\u003e: Male-Male\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 4-40\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 0.25 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBody Length\u003c\/strong\u003e: 0.25 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWidth Across Flats\u003c\/strong\u003e: 0.1875 inches (3\/16 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: Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: Grade 2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Zinc-Plated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFastener Standard\u003c\/strong\u003e: QQ-S-633\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength Tolerance\u003c\/strong\u003e: -0.005 to 0.005 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSystem of Measurement\u003c\/strong\u003e: Inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.12 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: MM1309M12-MSC\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ELECTRO HARDWARE","offers":[{"title":"Default Title","offer_id":51729210245426,"sku":"MM1309M12-MSC","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/84357611908f27e2258afcb9d4da0d3c_e13ac124-52a4-497f-aa7a-5768059973f5.jpg?v=1788701946","url":"https:\/\/voomisupply.com\/products\/electro-hardware-mm1309m12-msc-hex-standoff-4-40-1-4in-steel","provider":"Voomi Supply","version":"1.0","type":"link"}