{"product_id":"electro-hardware-p521m07f16-440-round-female-standoff","title":"Electro Hardware P521M07F16-440 Round Female Standoff","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ELECTRO HARDWARE P521M07F16-440 is a round, fully threaded female standoff designed to create precise spacing between circuit boards, panels, and chassis components. Machined from 18-8 and Grade 303 stainless steel with a bright finish, it delivers corrosion resistance and dimensional stability in electronics assembly and industrial enclosure applications. The standoff features a 4-40 thread size, an overall length of 0.375 inches, an outside diameter of 0.25 inches, and a thread depth of 0.5 inches. This hardware meets the QQ-S-763 federal specification for stainless steel fasteners. It is installed by electronics assemblers, panel builders, and field technicians working in enclosure fabrication or PCB mounting applications.\u003c\/p\u003e\u003cp\u003eThis standoff is suited for use in control panels, printed circuit board assemblies, electrical enclosures, and instrument housings where a compact, corrosion-resistant spacer is required. The inch-based dimensions and 4-40 thread make it a standard fit for light-gauge PCB mounting hardware used across commercial and industrial electronics. Its fully threaded female configuration accepts a mating 4-40 male fastener at both ends, allowing secure, stackable standoff arrangements.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eFully threaded female configuration accepts 4-40 male fasteners at both ends\u003c\/li\u003e\n\u003cli\u003e18-8 and Grade 303 stainless steel construction for corrosion resistance\u003c\/li\u003e\n\u003cli\u003eBright finish meets QQ-S-763 federal specification\u003c\/li\u003e\n\u003cli\u003eCompact 0.375 inch overall length suits tight PCB spacing requirements\u003c\/li\u003e\n\u003cli\u003eRound body shape with 0.25 inch outside diameter for consistent fitment in standard standoff clearances\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or new-build component for applications requiring a 4-40 fully threaded female round standoff in inch-standard hardware configurations.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by electronics assemblers or panel technicians using standard 4-40 tooling. De-energize all circuits and discharge any capacitive loads before working on PCB assemblies or live panels. Use a driver or nut driver sized for the outside diameter to avoid deforming the stainless steel body. Do not overtighten mating fasteners, as the 4-40 thread form in stainless steel is susceptible to galling if installed dry at excessive torque.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\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: 0.375 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutside Diameter\u003c\/strong\u003e: 0.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Depth\u003c\/strong\u003e: 0.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody Shape\u003c\/strong\u003e: Round\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Stainless Steel, 18-8 \/ Grade 303\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Bright\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard\u003c\/strong\u003e: QQ-S-763\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem of Measurement\u003c\/strong\u003e: Inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength Tolerance\u003c\/strong\u003e: -0.005 to 0.005 inches\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: P521M07F16-440\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ELECTRO HARDWARE","offers":[{"title":"Default Title","offer_id":51741969318194,"sku":"P521M07F16-440","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/24a5d05114a707e7b06a2620b31fbd67_a3460d43-83ea-413a-b642-29f354de03f2.jpg?v=1788834640","url":"https:\/\/voomisupply.com\/products\/electro-hardware-p521m07f16-440-round-female-standoff","provider":"Voomi Supply","version":"1.0","type":"link"}