{"product_id":"electro-hardware-s801-m10-f21-e-circuit-board-spacer-steel","title":"Electro Hardware S801-M10-F21-E Circuit Board Spacer Steel","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ELECTRO HARDWARE S801-M10-F21-E is a round, female unthreaded circuit board spacer designed to maintain precise standoff distances between a printed circuit board and a mounting surface. Manufactured from Grade 2 steel with a zinc-plated finish per ASTM B633 and QQ-S-633 Type 1, it provides corrosion resistance in typical indoor control panel environments. The spacer measures 0.375 inches overall length, with a 0.116 inch inside diameter and a 0.3125 inch outside diameter. It accepts a No. 4 screw. HVAC, electrical, and electronics technicians use these spacers during control board installations and enclosure builds where board clearance and isolation are required.\u003c\/p\u003e\n\u003cp\u003eThis spacer is suited for use in residential and light commercial applications wherever circuit boards must be mounted with controlled spacing from a chassis, panel, or sub-plate. Common install scenarios include HVAC control board replacements, electrical enclosure assemblies, and industrial control panel builds. The female unthreaded design allows a No. 4 fastener to pass through cleanly, making it appropriate for through-bolt or standoff stacking configurations. Sold individually, it is a direct-replacement or supplemental hardware item for technicians who need to source individual fastener components.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eFemale unthreaded round body accepts No. 4 screws\u003c\/li\u003e\n  \u003cli\u003eOverall length of 0.375 inches holds consistent board standoff distance\u003c\/li\u003e\n  \u003cli\u003e0.3125 inch outside diameter and 0.116 inch inside diameter with tight tolerances\u003c\/li\u003e\n  \u003cli\u003eGrade 2 steel construction meets ASTM B633 and QQ-S-633 Type 1 standards\u003c\/li\u003e\n  \u003cli\u003eZinc-plated finish provides corrosion resistance for panel and enclosure use\u003c\/li\u003e\n  \u003cli\u003eLength tolerance of -0.005 to 0.005 inches ensures reliable fitment in precision assemblies\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style hardware spacer for circuit board mounting applications requiring a No. 4 screw size, round body, female unthreaded type, with a 0.375 inch overall length and 0.3125 inch outside diameter in inch-system assemblies.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is typically performed by licensed HVAC technicians, electricians, or electronics assembly personnel. Always de-energize and lock out the equipment before working inside any control panel or enclosure. Use appropriate No. 4 fasteners and avoid overtightening, which can crack circuit board mounting pads or deform the spacer body. Follow applicable NEC guidelines when assembling or servicing electrical enclosures.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 0.375 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInside Diameter\u003c\/strong\u003e: 0.116 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInside Diameter Tolerance\u003c\/strong\u003e: 0.000 to 0.010 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutside Diameter\u003c\/strong\u003e: 0.3125 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\u003eScrew Size\u003c\/strong\u003e: No. 4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Type\u003c\/strong\u003e: Female Unthreaded\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, Grade 2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Zinc-Plated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFastener Standards\u003c\/strong\u003e: ASTM B633, QQ-S-633 Type 1\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\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: S801-M10-F21-E\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ELECTRO HARDWARE","offers":[{"title":"Default Title","offer_id":51743741313330,"sku":"S801-M10-F21-E","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/643849255a2e160728647213addd4352.jpg?v=1788849451","url":"https:\/\/voomisupply.com\/products\/electro-hardware-s801-m10-f21-e-circuit-board-spacer-steel","provider":"Voomi Supply","version":"1.0","type":"link"}