{"product_id":"electro-hardware-1459m12f21-440-hex-standoff-4-40","title":"Electro Hardware 1459M12F21-440 Hex Standoff 4-40","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ELECTRO HARDWARE 1459M12F21-440 is a male-female hex circuit board standoff designed to space and support printed circuit boards in electronic assemblies. The standoff features a 4-40 unified thread, with a male threaded post on one end and a female threaded bore on the other, allowing boards to be stacked or mounted at a fixed separation. The overall length is 1.4375 inches (1-7\/16 inches), with a hex body length of 1.25 inches and a 0.25-inch width across flats. Constructed from Grade 2 steel with a zinc-plated finish meeting ASTM B633 Type 1 and QQ-S-633 standards, it provides corrosion resistance suited to indoor electronics enclosures. Licensed technicians and electronics assemblers install these during panel builds and PCB mounting operations.\u003c\/p\u003e\u003cp\u003eThis standoff is used in residential and commercial electronic panel assemblies, control board mounting applications, and industrial enclosures where reliable PCB spacing and structural support are required. Typical applications include HVAC control board installations, electrical panel assemblies, and general electronics manufacturing where a secure, repeatable standoff height is needed. The male-female configuration allows daisy-chaining multiple standoffs for adjustable board stack heights.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eMale-female hex configuration supports stacked PCB mounting\u003c\/li\u003e\n\u003cli\u003e4-40 thread size with 3\/16-inch thread length on the male end and 1\/4-inch thread depth on the female end\u003c\/li\u003e\n\u003cli\u003eOverall length of 1.4375 inches with a length tolerance of -0.005 to 0.005 inches\u003c\/li\u003e\n\u003cli\u003eGrade 2 steel construction with zinc-plated finish per ASTM B633 Type 1 and QQ-S-633\u003c\/li\u003e\n\u003cli\u003eHex body shape with 0.25-inch width across flats for standard hex driver installation\u003c\/li\u003e\n\u003cli\u003eInch measurement system for compatibility with standard imperial fastener tooling\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or new-installation standoff for circuit board assemblies using 4-40 imperial thread fasteners in hex standoff configurations.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by electronics assemblers, electricians, or HVAC technicians during control board mounting. De-energize all circuits before handling circuit boards or installing standoffs in live panels. A standard hex driver or nut driver sized for 1\/4-inch across-flats hex fasteners is required. Avoid overtightening, as excessive torque on small-diameter 4-40 threads can strip the female bore or damage the PCB mounting hole.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Type\u003c\/strong\u003e: Male\/Female\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: 1.4375 inches (1-7\/16 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody Length\u003c\/strong\u003e: 1.25 inches (1-1\/4 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth Across Flats\u003c\/strong\u003e: 0.25 inches (1\/4 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Length (Male)\u003c\/strong\u003e: 3\/16 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Depth (Female)\u003c\/strong\u003e: 1\/4 inches\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, 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\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: 1459M12F21-440\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ELECTRO HARDWARE","offers":[{"title":"Default Title","offer_id":51741415244082,"sku":"1459M12F21-440","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/354e84e78593c87d91054c55b2ccfd1d_7548bfde-0f81-49be-b48a-9d3ce3bcecc8.jpg?v=1788831380","url":"https:\/\/voomisupply.com\/products\/electro-hardware-1459m12f21-440-hex-standoff-4-40","provider":"Voomi Supply","version":"1.0","type":"link"}