{"product_id":"electro-hardware-1329m12f21440-hex-standoff-4-40-1in","title":"Electro Hardware 1329M12F21440 Hex Standoff 4-40 1in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ELECTRO HARDWARE 1329M12F21440 is a male-female hex circuit board standoff designed to create precise spacing between PCBs, panels, and enclosure surfaces. Machined from steel with a zinc-plated finish, it meets ASTM B633 Type 1 and QQ-S-633 standards for corrosion protection. The standoff measures 1 inch in overall body length with a 3\/16-inch width across flats and uses a 4-40 thread on both the male and female ends. Thread depth on the female end is 1\/4 inch. Electricians, electronics technicians, and panel builders install these when stacking or mounting circuit boards at a fixed, repeatable distance inside control enclosures and electrical panels.\u003c\/p\u003e\u003cp\u003eThis standoff is suited for residential and commercial control panel assemblies, industrial enclosures, and HVAC or electrical equipment where circuit boards require secure, vibration-resistant mounting at a consistent standoff height. The hex body profile allows wrench engagement for controlled torque-down in tight board layouts. It is an inch-system fastener and is ordered in multiples of 10 per the manufacturer minimum order quantity.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eMale-female 4-40 thread configuration for stackable or single-level board mounting\u003c\/li\u003e\n\u003cli\u003e1 inch overall body length with tight length tolerance of -0.005 to +0.005 inches\u003c\/li\u003e\n\u003cli\u003e3\/16-inch hex body width across flats allows wrench or nut-driver engagement\u003c\/li\u003e\n\u003cli\u003e3\/16-inch thread length on male end; 1\/4-inch thread depth on female end\u003c\/li\u003e\n\u003cli\u003eSteel construction with zinc-plated finish per ASTM B633 Type 1 and QQ-S-633\u003c\/li\u003e\n\u003cli\u003eHex body shape resists rotation during installation and provides positive seating\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard 4-40 inch-series male-female hex standoff for circuit board and panel mounting applications where a 1-inch spacing height is required.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by electronics technicians, electricians, or panel builders using an appropriately sized hex driver or open-end wrench sized for 3\/16-inch flats. De-energize all boards and panels before installing or removing standoffs. Avoid over-torquing, as excessive force can strip the 4-40 thread or crack the PCB substrate. Follow applicable NEC requirements when installing boards inside energized enclosures.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Type\u003c\/strong\u003e: Male and 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 Body Length\u003c\/strong\u003e: 1 inch\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: 0.16 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: 1329M12F21440\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ELECTRO HARDWARE","offers":[{"title":"Default Title","offer_id":51749975818546,"sku":"1329M12F21440","price":29.42,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/e2ed038b6de2684c05119d308ef78b1d_40059d7d-2a7a-4e0f-9fee-12748f71325e.jpg?v=1788912837","url":"https:\/\/voomisupply.com\/products\/electro-hardware-1329m12f21440-hex-standoff-4-40-1in","provider":"Voomi Supply","version":"1.0","type":"link"}