{"product_id":"electro-hardware-p517m10f21-440-female-standoff-4-40","title":"Electro Hardware P517M10F21-440 Female Standoff 4-40","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ELECTRO HARDWARE P517M10F21-440 is a round female standoff designed to create threaded female connections between panels, boards, and chassis components. It accepts a 4-40 thread and is fully threaded through its entire 0.3125-inch overall length, providing maximum thread engagement for secure fastening. The body measures 0.25 inches in outside diameter and holds a 1-inch thread depth. Constructed from Grade 2 steel with a zinc-plated finish meeting ASTM B633 Type 1 and QQ-S-633 standards, this standoff is suited for light-gauge assemblies where corrosion resistance and dimensional precision are required. It is typically installed by electricians, electronics assemblers, and panel fabricators.\u003c\/p\u003e\u003cp\u003eThis standoff is used in electronic enclosures, control panels, PCB mounting applications, and general metal fabrication where a compact female threaded spacer is needed. Its round body and standard 4-40 thread size make it a common fit for light-duty electrical and electronic assemblies in both commercial and industrial settings. The zinc-plated steel construction suits indoor and light-exposure environments where basic corrosion resistance is sufficient.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eFully threaded female interior for maximum 4-40 thread engagement\u003c\/li\u003e\n\u003cli\u003eZinc-plated steel finish meets ASTM B633 Type 1 and QQ-S-633 standards\u003c\/li\u003e\n\u003cli\u003eGrade 2 steel construction for reliable light-duty fastening\u003c\/li\u003e\n\u003cli\u003eCompact round body at 0.25 inches OD for tight-clearance panel layouts\u003c\/li\u003e\n\u003cli\u003eLength tolerance held to -0.005 to 0.005 inches for precision assemblies\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard 4-40 fully threaded round female standoff for use in electronic enclosures, PCB assemblies, and control panel fabrication applications requiring inch-system fasteners.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is typically performed by electricians or electronics assemblers using standard 4-40 threaded hardware and appropriate hand tools. Ensure mating screws or posts do not exceed the thread depth of the standoff to avoid stripping. De-energize any panel or assembly before installing or removing standoffs in live electrical enclosures. Follow applicable NEC guidelines when used in electrical panel assemblies.\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: 0.3125 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: 1 inch\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: Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: Grade 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Zinc-Plated\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\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\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: P517M10F21-440\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ELECTRO HARDWARE","offers":[{"title":"Default Title","offer_id":51743801442610,"sku":"P517M10F21-440","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/24a5d05114a707e7b06a2620b31fbd67_2f1b21a2-fd37-4b32-89bf-0f7dd16ca805.jpg?v=1788849800","url":"https:\/\/voomisupply.com\/products\/electro-hardware-p517m10f21-440-female-standoff-4-40","provider":"Voomi Supply","version":"1.0","type":"link"}