{"product_id":"electro-hardware-s285m10f21e-circuit-board-spacer-steel","title":"Electro Hardware S285M10F21E Circuit Board Spacer Steel","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ELECTRO HARDWARE S285M10F21E is a round, female unthreaded circuit board spacer designed to maintain precise separation between PCBs and mounting surfaces in electronic assemblies. Manufactured from Grade 2 steel with a zinc-plated finish per ASTM B633 and QQ-S-633 Type 1, it delivers corrosion resistance suitable for industrial and commercial control board applications. The spacer measures 0.125 inches overall length, 0.1875 inches outside diameter, and 0.116 inches inside diameter, sized for a number 4 screw. Electricians, controls technicians, and electronics assembly professionals install these spacers when mounting circuit boards in HVAC control panels, electrical enclosures, and similar equipment.\u003c\/p\u003e\u003cp\u003eThis spacer is used in light-duty electronic mounting applications where a small, precise standoff is needed between a circuit board and a panel or chassis surface. It is appropriate for residential and commercial HVAC control boards, low-voltage wiring panels, and industrial electronic enclosures where number 4 fasteners are the standard mounting hardware. Its compact diameter and short overall length make it well suited for dense PCB layouts with limited clearance.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eFemale unthreaded design accepts a number 4 screw for secure board mounting\u003c\/li\u003e\n\u003cli\u003eGrade 2 steel construction for reliable mechanical performance in control panel environments\u003c\/li\u003e\n\u003cli\u003eZinc-plated finish per ASTM B633 and QQ-S-633 Type 1 for corrosion resistance\u003c\/li\u003e\n\u003cli\u003e0.125 inches overall length with a length tolerance of -0.005 to 0.005 inches for consistent stack height\u003c\/li\u003e\n\u003cli\u003eInside diameter tolerance of 0.000 to 0.010 inches ensures proper screw fitment\u003c\/li\u003e\n\u003cli\u003eRound body shape with 0.1875 inches outside diameter for compact PCB spacing applications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or standard-use circuit board spacer for number 4 screw mounting configurations in electronic control panel assemblies.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by electricians or controls technicians during circuit board mounting or replacement procedures. Always de-energize the control panel and discharge any capacitors before handling circuit boards or installing spacers. Use the appropriate number 4 screw and driver to avoid overloading the unthreaded female bore. Follow applicable NEC guidelines for work inside electrical enclosures.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\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 Standard\u003c\/strong\u003e: ASTM B633, QQ-S-633 Type 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScrew Size\u003c\/strong\u003e: Number 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 0.125 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\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: 0.1875 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody Shape\u003c\/strong\u003e: Round\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType\u003c\/strong\u003e: Female Unthreaded\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\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: S285M10F21E\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ELECTRO HARDWARE","offers":[{"title":"Default Title","offer_id":51753136947506,"sku":"S285M10F21E","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/64ed36ec3a1c33caaf172ec4e8fe95b6_06943307-bffc-456b-8ebc-84ed57084337.jpg?v=1788933168","url":"https:\/\/voomisupply.com\/products\/electro-hardware-s285m10f21e-circuit-board-spacer-steel","provider":"Voomi Supply","version":"1.0","type":"link"}