{"product_id":"electro-hardware-s593-m01-f21-h-circuit-board-spacer-no-8","title":"Electro Hardware S593-M01-F21-H Circuit Board Spacer No. 8","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ELECTRO HARDWARE S593-M01-F21-H is a round, female unthreaded circuit board spacer machined from brass and finished with a zinc plating for corrosion resistance. It measures 1.5 inches in overall length with an inside diameter of 0.171 inches and an outside diameter of 0.25 inches, sized for a No. 8 screw. The spacer meets ASTM B633 and QQ-B-626 Comp 22 Type 1 standards, making it a recognized choice for controlled-environment electronics assemblies. Electricians, electronics technicians, and panel builders use this type of standoff to maintain consistent board-to-chassis clearance and prevent contact faults in control enclosures and circuit board mounting applications.\u003c\/p\u003e\n\u003cp\u003eThis spacer is suited for residential and commercial control board mounting, panel assembly, and PCB standoff applications where a No. 8 fastener pattern is specified. Its brass construction makes it appropriate for environments where non-magnetic, thermally stable material is preferred. The female unthreaded bore accepts a No. 8 screw on both ends without threading into the spacer body itself, allowing for straightforward stacking or single-pass fastening. It is sold individually and is compatible with standard inch-measurement hardware layouts.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eFemale unthreaded bore sized for No. 8 screws with 0.171-inch inside diameter\u003c\/li\u003e\n  \u003cli\u003eBrass construction meets ASTM B633 and QQ-B-626 Comp 22 Type 1 standards\u003c\/li\u003e\n  \u003cli\u003eZinc-plated finish for added corrosion resistance\u003c\/li\u003e\n  \u003cli\u003e1.5-inch overall length with tight length tolerance of -0.005 to 0.005 inches\u003c\/li\u003e\n  \u003cli\u003e0.25-inch outside diameter round body for consistent board standoff clearance\u003c\/li\u003e\n  \u003cli\u003eInside diameter tolerance of 0.000 to 0.010 inches for reliable fastener fit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or new-installation standoff for circuit board mounting applications using No. 8 inch-measurement fastener patterns in control enclosures and electronic assemblies.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is typically performed by licensed electricians or electronics technicians. De-energize the control panel or circuit board assembly completely before handling or installing spacers. Use appropriately sized No. 8 screws and avoid overtightening, which can crack the board or deform the spacer. Follow applicable NEC guidelines for control panel assembly and board mounting clearances.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 1.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInside Diameter\u003c\/strong\u003e: 0.171 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutside Diameter\u003c\/strong\u003e: 0.25 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\u003eLength Tolerance\u003c\/strong\u003e: -0.005 to 0.005 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: No. 8\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\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\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: S593-M01-F21-H\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ELECTRO HARDWARE","offers":[{"title":"Default Title","offer_id":51740840132914,"sku":"S593-M01-F21-H","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/64ed36ec3a1c33caaf172ec4e8fe95b6_678c55ad-7136-471a-8163-22b619eb0750.jpg?v=1788827770","url":"https:\/\/voomisupply.com\/products\/electro-hardware-s593-m01-f21-h-circuit-board-spacer-no-8","provider":"Voomi Supply","version":"1.0","type":"link"}