{"product_id":"electro-hardware-1309m03f21440-hex-standoff-4-40-3-16-in","title":"Electro Hardware 1309M03F21440 Hex Standoff 4-40 3\/16 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ELECTRO HARDWARE 1309M03F21440 is a male-female hex circuit board standoff designed to create fixed spacing between PCBs or between a board and a mounting surface. Machined from brass with a zinc-plated finish meeting ASTM B633 Type 1 and QQ-B-626 Comp 22 standards, this standoff accepts a 4-40 threaded fastener on both ends. The hex body measures 3\/16 inches across flats and the overall body length is 3\/8 inches (0.375 inches). The male thread length is 3\/16 inches and the female thread depth is 1\/4 inch. Electronic assembly technicians, field service techs, and OEM production personnel install these during board mounting and chassis assembly operations.\u003c\/p\u003e\n\u003cp\u003eThis standoff is suited for use in control boards, relay panels, and electronic enclosures found across HVAC control systems, electrical control panels, and industrial electronics. The 4-40 thread size is a common fastener standard in low-voltage circuit board assemblies. The hex body shape allows installation and removal with a standard hex wrench or nut driver, making it appropriate for both production-line assembly and field service replacement. Sold individually with a minimum order quantity of 10 units.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eMale-female configuration spaces and stacks PCBs or mounts boards to chassis surfaces\u003c\/li\u003e\n  \u003cli\u003eBrass construction with zinc-plated finish per ASTM B633 Type 1 and QQ-B-626 Comp 22\u003c\/li\u003e\n  \u003cli\u003e4-40 thread size on both male and female ends\u003c\/li\u003e\n  \u003cli\u003eHex body profile accepts standard nut driver or hex wrench for installation\u003c\/li\u003e\n  \u003cli\u003eLength tolerance held to plus or minus 0.005 inches for consistent stack height\u003c\/li\u003e\n  \u003cli\u003eInch measurement system; body length 3\/8 inches (0.375 inches)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or assembly component for circuit board mounting applications requiring a 4-40 thread, 3\/8-inch body length, hex standoff in inch-series fastener systems.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by electronic assembly technicians or qualified service personnel. De-energize and discharge all circuits and capacitors before handling circuit boards or installing standoffs in live enclosures. Use a properly sized nut driver or hex wrench matched to the 3\/16-inch across-flats hex body to avoid deforming the standoff. Do not overtighten; brass hardware is susceptible to thread stripping under excessive torque.\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\u003eBody Shape\u003c\/strong\u003e: Hex\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Body Length\u003c\/strong\u003e: 3\/8 inches (0.375 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWidth Across Flats\u003c\/strong\u003e: 3\/16 inches (0.1875 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMale Thread Length\u003c\/strong\u003e: 3\/16 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFemale Thread Depth\u003c\/strong\u003e: 1\/4 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\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\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: 1309M03F21440\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ELECTRO HARDWARE","offers":[{"title":"Default Title","offer_id":51727385592114,"sku":"1309M03F21440","price":19.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/e2ed038b6de2684c05119d308ef78b1d.jpg?v=1788677119","url":"https:\/\/voomisupply.com\/products\/electro-hardware-1309m03f21440-hex-standoff-4-40-3-16-in","provider":"Voomi Supply","version":"1.0","type":"link"}