{"product_id":"electro-hardware-p405m03f21440-hex-standoff-4-40-2in","title":"Electro Hardware P405M03F21440 Hex Standoff 4-40 2in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ELECTRO HARDWARE P405M03F21440 is a female hex circuit board standoff designed to create precise spacing and secure mechanical fastening between PCBs, enclosure panels, and mounting surfaces. Built from brass with a clear zinc chromate finish meeting ASTM B633 Type 1 and QQ-B-626 Comp 22 standards, this standoff delivers corrosion resistance alongside reliable electrical isolation in tight board-to-board stacking applications. The 4-40 female thread accepts standard machine screws at both ends, with a 0.25 inch thread depth. Overall length is 2 inches, and the hex body measures 3\/16 inches across flats, allowing engagement with standard hex drivers and nut drivers. Electronics assemblers, panel builders, and field service technicians working on control boards in HVAC, industrial, and electrical enclosure applications rely on this hardware for repeatable, code-compliant standoff installations.\u003c\/p\u003e\n\u003cp\u003eThis standoff is suited for use in residential and commercial PCB assemblies, control panel builds, and equipment enclosures where consistent board spacing and mechanical stability are required. It is commonly installed during initial board mounting or replacement of damaged standoffs on control boards found in HVAC systems, variable frequency drives, and similar low-voltage electronics. The hex profile allows installation and removal with standard hand tools without marring the body or surrounding components.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eFemale 4-40 thread on both ends with 0.25 inch thread depth for secure screw engagement\u003c\/li\u003e\n  \u003cli\u003e2 inch overall length provides defined PCB-to-panel spacing in stacked assemblies\u003c\/li\u003e\n  \u003cli\u003eHex body at 3\/16 inches across flats compatible with standard nut drivers and hex wrenches\u003c\/li\u003e\n  \u003cli\u003eBrass construction with clear zinc chromate finish for corrosion resistance\u003c\/li\u003e\n  \u003cli\u003eMeets ASTM B633 Type 1 and QQ-B-626 Comp 22 finish standards\u003c\/li\u003e\n  \u003cli\u003eInch measurement system with tight length tolerance of plus or minus 0.005 inches\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or new-installation standoff for circuit board assemblies using 4-40 machine screw fasteners and requiring 2 inches of board standoff clearance.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by electronics assemblers, panel builders, or qualified service technicians. Power down and de-energize all circuits before removing or installing circuit board hardware. Use a properly sized nut driver or hex wrench matched to the 3\/16 inch across-flats dimension to avoid rounding the hex body. Do not overtighten mating screws beyond the torque specification of the connecting fastener to prevent thread damage in the brass body.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Type\u003c\/strong\u003e: 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: 2 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Depth\u003c\/strong\u003e: 0.25 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\u003eBody Shape\u003c\/strong\u003e: Hex\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: Clear Zinc Chromate\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: 1 pound\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\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: P405M03F21440\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ELECTRO HARDWARE","offers":[{"title":"Default Title","offer_id":51731455770930,"sku":"P405M03F21440","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/8bc5eeb70bd61d96948bc55a1e218eb0.jpg?v=1788731334","url":"https:\/\/voomisupply.com\/products\/electro-hardware-p405m03f21440-hex-standoff-4-40-2in","provider":"Voomi Supply","version":"1.0","type":"link"}