{"product_id":"electro-hardware-1307m12f21440-hex-board-standoff-4-40","title":"Electro Hardware 1307M12F21440 Hex Board Standoff 4-40","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ELECTRO HARDWARE 1307M12F21440 is a male-female hex circuit board standoff designed to create fixed spacing between PCBs and mounting surfaces in electronic assemblies. This standoff features a 4-40 unified coarse thread with a male end on one side and a female threaded bore on the other, allowing boards to be stacked or mounted at a consistent 5\/16 inch overall body length. The hex body measures 3\/16 inches across flats for wrench engagement during installation. Finished in zinc plating per ASTM B633 Type 1 and QQ-S-633, the steel construction resists corrosion in standard indoor electronic enclosure environments. Technicians working on control boards in HVAC equipment, electrical panels, or industrial assemblies will recognize this as a standard hardware component.\u003c\/p\u003e\n\u003cp\u003eThis standoff is used wherever circuit boards require secure, elevated mounting within an enclosure or chassis. Common applications include HVAC control board assemblies, electrical panel sub-assemblies, industrial control enclosures, and general electronics manufacturing. The 4-40 thread size is one of the most widely used small-fastener thread standards in North American electronics assembly. The male-female configuration allows daisy-chaining of multiple standoffs or direct fastening of a mating screw to secure a board. It is sold individually but carries a minimum order quantity of 10 units.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eMale-female hex body allows board stacking and secure PCB mounting in a single fastener\u003c\/li\u003e\n  \u003cli\u003e4-40 thread on both male stud and female bore for compatibility with standard 4-40 machine screws\u003c\/li\u003e\n  \u003cli\u003e5\/16 inch overall body length with a length tolerance of -0.005 to 0.005 inches\u003c\/li\u003e\n  \u003cli\u003e3\/16 inch width across flats sized for standard hex drivers and wrenches\u003c\/li\u003e\n  \u003cli\u003eZinc-plated steel construction meets ASTM B633 Type 1 and QQ-S-633 finish standards\u003c\/li\u003e\n  \u003cli\u003eHex body shape provides positive tool engagement and prevents rotation during assembly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard 4-40 male-female hex standoff for use in circuit board mounting applications requiring a 5\/16 inch standoff height and 3\/16 inch hex body in inch-measurement fastener systems.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by technicians assembling or servicing electronic control boards, typically using a hex driver or small open-end wrench sized for the 3\/16 inch flats. Always de-energize and discharge any capacitors in the assembly before handling circuit boards or mounting hardware. Use care not to overtighten, as the 4-40 thread engages small clearance holes and overtorquing can strip threads or crack board material. Follow applicable assembly documentation and ESD precautions when handling populated circuit boards.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 4-40\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Type\u003c\/strong\u003e: Male and Female\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Body Length\u003c\/strong\u003e: 5\/16 inch (0.3125 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWidth Across Flats\u003c\/strong\u003e: 3\/16 inch (0.1875 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Depth (Female)\u003c\/strong\u003e: 1\/4 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Length (Male)\u003c\/strong\u003e: 3\/16 inch\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\u003eBody Shape\u003c\/strong\u003e: Hex\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Steel, Material Grade 2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Zinc-Plated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: ASTM B633 Type 1, QQ-S-633\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  \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\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: 1307M12F21440\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ELECTRO HARDWARE","offers":[{"title":"Default Title","offer_id":51739057127730,"sku":"1307M12F21440","price":28.31,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/e2ed038b6de2684c05119d308ef78b1d_f28dcbd2-a1f4-4cba-a322-e14af62e72be.jpg?v=1788808634","url":"https:\/\/voomisupply.com\/products\/electro-hardware-1307m12f21440-hex-board-standoff-4-40","provider":"Voomi Supply","version":"1.0","type":"link"}