{"product_id":"electro-hardware-s293m01f21e-round-circuit-board-spacer","title":"Electro Hardware S293M01F21E Round Circuit Board Spacer","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ELECTRO HARDWARE S293M01F21E is a round, female unthreaded circuit board spacer designed to maintain precise standoff distances between PCBs and mounting surfaces in electronic assemblies. Machined from brass and finished with a zinc plating per ASTM B633 and QQ-B-626 Comp 22 Type 1, this spacer delivers corrosion resistance alongside dimensional accuracy. It measures 0.25 inches overall length with a 0.1875 inch outside diameter and a 0.116 inch inside diameter, sized to accept a number 4 screw. Electricians, electronics technicians, and control board assemblers use this type of hardware when mounting circuit boards inside HVAC control enclosures, electrical panels, and industrial equipment.\u003c\/p\u003e\u003cp\u003eThis spacer is suited for residential and commercial applications wherever a number 4 fastener is used to secure a circuit board at a fixed standoff height. Common installations include HVAC control board mounting, motor drive assemblies, and low-voltage control panels. The inch-system dimensioning and ASTM B633 zinc-plated brass construction make it compatible with standard domestic control board hardware configurations. Package quantity is one piece per unit.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eFemale unthreaded round body accepts number 4 screws for straightforward circuit board mounting\u003c\/li\u003e\n\u003cli\u003eBrass base material with zinc plating per ASTM B633 and QQ-B-626 Comp 22 Type 1 for corrosion resistance\u003c\/li\u003e\n\u003cli\u003e0.25 inch overall length with tight length tolerance of -0.005 to 0.005 inches for consistent standoff height\u003c\/li\u003e\n\u003cli\u003e0.116 inch inside diameter with inside diameter tolerance of 0.000 to 0.010 inches\u003c\/li\u003e\n\u003cli\u003e0.1875 inch outside diameter in a compact round profile for dense PCB layouts\u003c\/li\u003e\n\u003cli\u003eLightweight at 0.002 pounds, minimizing added load on circuit board assemblies\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard inch-system female unthreaded round spacer for use with number 4 screw fasteners in circuit board mounting applications across HVAC controls, electrical enclosures, and electronic assemblies.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is typically performed by electronics technicians or licensed electricians during control board assembly or replacement. Always de-energize and lock out the equipment before handling circuit board hardware. Use a correctly sized number 4 screw and avoid overtightening, which can crack the PCB substrate or deform the spacer. Follow applicable NEC guidelines when installing control boards inside electrical enclosures.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Brass\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-B-626 Comp 22 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: 0.25 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\u003eWeight\u003c\/strong\u003e: 0.002 pounds\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: S293M01F21E\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ELECTRO HARDWARE","offers":[{"title":"Default Title","offer_id":51729557913906,"sku":"S293M01F21E","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/64ed36ec3a1c33caaf172ec4e8fe95b6_968a32d1-9239-4882-be16-37438e220a07.jpg?v=1788706128","url":"https:\/\/voomisupply.com\/products\/electro-hardware-s293m01f21e-round-circuit-board-spacer","provider":"Voomi Supply","version":"1.0","type":"link"}