{"product_id":"electro-hardware-1310m03f21440-hex-board-standoff-4-40","title":"Electro Hardware 1310M03F21440 Hex Board Standoff 4-40","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ELECTRO HARDWARE 1310M03F21440 is a male-female hex circuit board standoff designed to create precise spacing and mechanical support between PCBs and enclosure panels or stacked boards. 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 isolation in electronic assemblies. The 4-40 threaded fastener accepts a 4-40 male screw on one end and provides a 4-40 female threaded socket on the other, enabling secure board-to-board or board-to-chassis mounting. Overall body length is 0.4063 inches with a 3\/16-inch hex width across flats. Installed by electronics assemblers, field service technicians, and electricians working with control boards in HVAC, industrial, and commercial panel applications.\u003c\/p\u003e\u003cp\u003eThis standoff is suited for use in residential and light commercial electronic assemblies where consistent PCB standoff height and thread engagement are required. Typical applications include control board mounting in HVAC equipment, electrical enclosures, and industrial automation panels. The hex body shape allows easy installation and removal with a standard nut driver or hex wrench. The 1\/4-inch thread depth on the female end ensures adequate thread engagement for 4-40 machine screws under normal vibration and service conditions.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eMale-female configuration allows daisy-chain board stacking or board-to-chassis mounting with a single fastener type\u003c\/li\u003e\n\u003cli\u003eBrass construction with zinc plating meets ASTM B633 Type 1 and QQ-B-626 Comp 22 standards for corrosion resistance\u003c\/li\u003e\n\u003cli\u003eHex body profile (3\/16 inch across flats) accepts standard nut drivers for torque-controlled installation\u003c\/li\u003e\n\u003cli\u003e4-40 thread size on both male and female ends for compatibility with standard machine screw hardware\u003c\/li\u003e\n\u003cli\u003eLength tolerance held to plus or minus 0.005 inches for consistent stack height in multi-board assemblies\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard 4-40 male-female hex PCB standoff for use in any electronic assembly, enclosure, or control board application requiring 4-40 threaded hardware and a 13\/32-inch overall body length.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by electronics assemblers or licensed technicians servicing control boards in HVAC, electrical, or industrial equipment. Always de-energize and lockout the equipment before servicing any circuit board or replacing standoffs. Use a correctly sized nut driver matched to the 3\/16-inch hex flats to avoid deforming the standoff body. Do not overtighten — brass fasteners are susceptible to thread stripping when torque is applied beyond hand-tight plus a controlled turn.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\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: 0.4063 inches (13\/32 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\u003eThread Depth (Female End)\u003c\/strong\u003e: 0.25 inches (1\/4 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Length (Male End)\u003c\/strong\u003e: 0.1875 inches (3\/16 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: Brass\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-B-626 Comp 22\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: 0.14 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 31161816\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: 1310M03F21440\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ELECTRO HARDWARE","offers":[{"title":"Default Title","offer_id":51744493109554,"sku":"1310M03F21440","price":31.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/e2ed038b6de2684c05119d308ef78b1d_f950d9b8-282c-4708-9bcc-60495bfe55f2.jpg?v=1788857319","url":"https:\/\/voomisupply.com\/products\/electro-hardware-1310m03f21440-hex-board-standoff-4-40","provider":"Voomi Supply","version":"1.0","type":"link"}