{"product_id":"electro-hardware-s293m10f21e-circuit-board-spacer-no-4","title":"Electro Hardware S293M10F21E Circuit Board Spacer No. 4","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ELECTRO HARDWARE S293M10F21E is a round, female unthreaded circuit board spacer designed to maintain precise standoff clearance between a PCB and a mounting surface or between stacked boards. It accepts a No. 4 screw and measures 0.25 inches overall length (OAL) with a 0.116 inch inside diameter and 0.1875 inch outside diameter. Constructed 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 electronic and electrical enclosure environments. Electronics assemblers, panel builders, and field technicians install this spacer during board mounting and enclosure assembly work.\u003c\/p\u003e\u003cp\u003eThis spacer is suited for use in residential and light commercial electrical panels, HVAC control board assemblies, and other applications requiring a compact, low-profile PCB standoff. The round body profile and female unthreaded bore make it straightforward to stack or position on a No. 4 screw during assembly. Its small outside diameter of 0.1875 inches fits in tight board layouts where clearance is limited.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eFemale unthreaded bore accepts No. 4 screws for direct PCB standoff mounting\u003c\/li\u003e\n\u003cli\u003e0.25 inch OAL with tight length tolerance of -0.005 to +0.005 inches for consistent board spacing\u003c\/li\u003e\n\u003cli\u003eInside diameter tolerance of 0.000 to 0.010 inches for reliable screw fit\u003c\/li\u003e\n\u003cli\u003eGrade 2 steel construction with zinc-plated finish per ASTM B633 and QQ-S-633 Type 1\u003c\/li\u003e\n\u003cli\u003eCompact round body at 0.1875 inches OD for use in dense board layouts\u003c\/li\u003e\n\u003cli\u003eInch measurement system; UNSPSC Code 31161816\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard No. 4 screw PCB standoff spacer suitable for circuit board mounting applications in electronic assemblies, electrical enclosures, and control panel builds where a 0.25 inch female unthreaded round spacer is specified.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is typically performed by electronics assemblers, panel builders, or licensed electricians during control board mounting or enclosure assembly. De-energize all equipment fully before working inside any electrical enclosure or control panel. Use hand tools appropriate for No. 4 fasteners and avoid over-torquing, which can crack PCB mounting holes or deform the spacer bore. Confirm spacer height and inside diameter match the board layout requirements before final assembly.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\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\u003eScrew Size\u003c\/strong\u003e: No. 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length (OAL)\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\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\u003eSystem of Measurement\u003c\/strong\u003e: Inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1 pound\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 31161816\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: S293M10F21E\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ELECTRO HARDWARE","offers":[{"title":"Default Title","offer_id":51738372538674,"sku":"S293M10F21E","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/64ed36ec3a1c33caaf172ec4e8fe95b6_e46926e5-0f1d-4e11-82c7-98eca02e1d07.jpg?v=1788798766","url":"https:\/\/voomisupply.com\/products\/electro-hardware-s293m10f21e-circuit-board-spacer-no-4","provider":"Voomi Supply","version":"1.0","type":"link"}