{"product_id":"electro-hardware-p437m03f21440-hex-standoff-4-40-2-5in","title":"Electro Hardware P437M03F21440 Hex Standoff 4-40 2.5in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ELECTRO HARDWARE P437M03F21440 is a female hex circuit board standoff designed to space and secure printed circuit boards within an enclosure or assembly. It features a 4-40 thread size, an overall length of 2.5 inches, and a hex body width across flats of 0.1875 inches (3\/16 inches). Constructed from brass with a clear zinc chromate finish meeting ASTM B633 Type 1 and QQ-B-626 Comp 22 standards, this standoff provides corrosion resistance alongside reliable mechanical support. It is installed by electronics assembly technicians, field service engineers, and trade professionals mounting control boards in HVAC, electrical, and industrial equipment panels.\u003c\/p\u003e\n\u003cp\u003eThis standoff is suited for use in circuit board mounting applications where precise board-to-board or board-to-chassis spacing is required. The female thread configuration accepts a machine screw on one or both ends, depending on the assembly stack. Typical applications include control board installations in HVAC equipment enclosures, electrical panel assemblies, and industrial control cabinets. The inch-system sizing and 4-40 thread make it compatible with standard American fastener layouts found across commercial and residential equipment platforms.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eFemale hex standoff with 4-40 thread size for standard inch-system circuit board mounting\u003c\/li\u003e\n  \u003cli\u003eOverall length of 2.5 inches with a tight length tolerance of -0.005 to +0.005 inches\u003c\/li\u003e\n  \u003cli\u003eWidth across flats of 0.1875 inches (3\/16 inches) for wrench-driven installation\u003c\/li\u003e\n  \u003cli\u003eThread depth of 0.25 inches (1\/4 inches) on the female end\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 fastener standards\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 inch-system threaded fasteners in residential and commercial electrical, HVAC, and industrial control applications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by electronics assembly technicians or qualified trade professionals. De-energize all circuits and discharge any capacitors before handling circuit boards or installing standoffs. A hex driver or appropriately sized open-end wrench is used to seat the standoff to the chassis; avoid overtightening, which can crack the board substrate or strip the brass threads. Follow applicable NEC or equipment-manufacturer guidelines for control board mounting and enclosure reassembly.\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: 2.5 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\u003c\/strong\u003e: 0.25 inches (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: 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\u003ePackage Quantity\u003c\/strong\u003e: 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1 pound\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: P437M03F21440\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ELECTRO HARDWARE","offers":[{"title":"Default Title","offer_id":51732991115570,"sku":"P437M03F21440","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/69be0ea513ec4cbce20afd5016302ef1_d2466913-0989-438b-9f70-c6f03275cb53.jpg?v=1788750133","url":"https:\/\/voomisupply.com\/products\/electro-hardware-p437m03f21440-hex-standoff-4-40-2-5in","provider":"Voomi Supply","version":"1.0","type":"link"}