{"product_id":"electro-hardware-s357m01f21e-circuit-board-spacer-brass","title":"Electro Hardware S357M01F21E Circuit Board Spacer Brass","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ELECTRO HARDWARE S357M01F21E is a round, female unthreaded circuit board spacer designed to maintain precise standoff distance between a printed circuit board and a mounting surface or secondary board. Built from brass with a zinc-plated finish per ASTM B633 and QQ-B-626 Comp 22 Type 1, this spacer delivers corrosion resistance alongside the dimensional accuracy required in tight electronic assemblies. It accepts a No. 4 screw and measures 1.25 inches overall length with a 0.116-inch inside diameter and a 0.1875-inch outside diameter. Licensed electricians, control board technicians, and HVAC electronics assemblers rely on this type of hardware when building or repairing control panel assemblies where board-to-chassis clearance must be consistent and secure.\u003c\/p\u003e\n\u003cp\u003eThis spacer is suited for residential and light commercial electronic control board assemblies, including HVAC control boards, low-voltage circuit panels, and other PCB mounting applications where a No. 4 fastener is used. The female unthreaded design allows a screw to pass through or seat without threading into the spacer body, making it appropriate for through-bolt or captured-screw configurations. The zinc-plated brass construction is a standard specification in control board hardware kits and replacement fastener sets across multiple trade applications.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eBrass construction with zinc-plated finish meeting ASTM B633 and QQ-B-626 Comp 22 Type 1\u003c\/li\u003e\n  \u003cli\u003eFemale unthreaded round body for No. 4 screw compatibility\u003c\/li\u003e\n  \u003cli\u003e1.25-inch overall length with tight length tolerance of -0.005 to 0.005 inches\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\u003c\/li\u003e\n  \u003cli\u003eInch measurement system; UNSPSC Code 31161816\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or assembly component for circuit board mounting applications requiring a No. 4 screw, round female unthreaded brass spacer with 1.25-inch standoff length.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is typically performed by electronics technicians, licensed electricians, or qualified HVAC service professionals during control board replacement or panel assembly. Power down and de-energize all circuits before handling circuit boards or installing mounting hardware. Use a calibrated torque driver appropriate for No. 4 fasteners to avoid cracking the PCB substrate. Follow applicable NEC guidelines when working inside electrical enclosures.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\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: No. 4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType\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\u003eOverall Length\u003c\/strong\u003e: 1.25 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\u003eSystem of Measurement\u003c\/strong\u003e: Inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 31161816\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1 pound\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: S357M01F21E\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ELECTRO HARDWARE","offers":[{"title":"Default Title","offer_id":51746529083698,"sku":"S357M01F21E","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/64ed36ec3a1c33caaf172ec4e8fe95b6_7b0db143-e9de-4b37-8593-8e74025cab67.jpg?v=1788871053","url":"https:\/\/voomisupply.com\/products\/electro-hardware-s357m01f21e-circuit-board-spacer-brass","provider":"Voomi Supply","version":"1.0","type":"link"}