{"product_id":"electro-hardware-1309m12f21440-hex-standoff-4-40-3-8-in","title":"Electro Hardware 1309M12F21440 Hex Standoff 4-40 3\/8 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ELECTRO HARDWARE 1309M12F21440 is a male-female hex circuit board standoff designed to create precise spacing between PCBs and mounting surfaces in electronic assemblies. It features a 4-40 unified coarse thread, with a male thread on one end and a female threaded bore on the other, allowing standoffs to be stacked or used with standard 4-40 machine screws. The body is steel with a zinc plating finish that meets ASTM B633 Type 1 and QQ-S-633 standards. Overall length is 0.375 inches with a hexagonal body measuring 0.1875 inches (3\/16 inch) across the flats. Licensed electricians, electronics technicians, and HVAC controls installers commonly use these standoffs when mounting control boards or relay panels.\u003c\/p\u003e\n\u003cp\u003eThis standoff is suited for residential and light commercial control board mounting applications, including HVAC equipment control panels, relay boards, and general electronic enclosures. The male-female configuration allows for secure, repeatable board-to-chassis or board-to-board spacing without the need for additional hardware on the male end. It is sold individually but requires a minimum order of 10 units per purchase.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e4-40 male-female threaded configuration for stackable or screw-through installations\u003c\/li\u003e\n  \u003cli\u003eHex body at 0.1875 inches across flats for wrench or socket installation\u003c\/li\u003e\n  \u003cli\u003eOverall body length of 0.375 inches with a 0.25-inch (1\/4 inch) female thread depth\u003c\/li\u003e\n  \u003cli\u003eSteel construction with zinc plating meeting ASTM B633 Type 1 and QQ-S-633 standards\u003c\/li\u003e\n  \u003cli\u003eLength tolerance held to plus or minus 0.005 inches for consistent stacking height\u003c\/li\u003e\n  \u003cli\u003eMinimum order quantity of 10 units supports service stock and panel builds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement and general-use standoff for 4-40 threaded circuit board mounting applications in electronic enclosures, HVAC control panels, and relay board assemblies.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by electricians, electronics technicians, or HVAC controls technicians. De-energize all control circuits and discharge any capacitors before handling circuit boards or installing standoffs. Use an appropriately sized hex wrench or nut driver on the 0.1875-inch hex body to avoid rounding the flats. Do not overtighten — seat the standoff snug to the mounting surface without deforming the board material.\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-Female\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 0.375 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWidth Across Flats\u003c\/strong\u003e: 0.1875 inches (3\/16 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Depth (Female)\u003c\/strong\u003e: 0.25 inches (1\/4 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Length (Male)\u003c\/strong\u003e: 0.1875 inches (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: Hexagonal\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Steel, Grade 2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Zinc Plating\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: 0.13 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: 1309M12F21440\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ELECTRO HARDWARE","offers":[{"title":"Default Title","offer_id":51753767469362,"sku":"1309M12F21440","price":28.33,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/e2ed038b6de2684c05119d308ef78b1d_ff9715cc-77e3-4f6f-85f3-a474b0871325.jpg?v=1788940477","url":"https:\/\/voomisupply.com\/products\/electro-hardware-1309m12f21440-hex-standoff-4-40-3-8-in","provider":"Voomi Supply","version":"1.0","type":"link"}