{"product_id":"electro-hardware-s509-m01-f21-g-round-circuit-board-spacer","title":"Electro Hardware S509-M01-F21-G Round Circuit Board Spacer","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ELECTRO HARDWARE S509-M01-F21-G is a round, female unthreaded circuit board spacer designed to create a controlled standoff between a PCB and a mounting surface or adjacent board. It accepts a 6 screw and holds boards at a fixed overall length of 0.1875 inches with an outside diameter of 0.25 inches and an inside diameter of 0.141 inches. Constructed from brass with a zinc-plated finish meeting ASTM B633 and QQ-B-626 Comp 22 Type 1 standards, this spacer provides reliable electrical isolation and mechanical separation in control board assemblies across HVAC, electrical, and industrial equipment applications.\u003c\/p\u003e\u003cp\u003eThis spacer is suited for use in residential and commercial equipment wherever circuit boards require rigid, precise standoff mounting. Typical applications include HVAC control board assemblies, electrical enclosure PCB mounting, and any panel-mount scenario where consistent board-to-board or board-to-chassis clearance is required. The female unthreaded design allows a screw to pass through cleanly, securing the board without threading into the spacer body itself. Its compact 0.1875-inch length makes it appropriate for low-profile PCB stacking configurations.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eFemale unthreaded body accepts a 6 screw for straightforward PCB standoff mounting\u003c\/li\u003e\n\u003cli\u003eOverall length of 0.1875 inches with tight length tolerance of -0.005 to 0.005 inches\u003c\/li\u003e\n\u003cli\u003eOutside diameter of 0.25 inches and inside diameter of 0.141 inches with tolerance of 0.000 to 0.010 inches\u003c\/li\u003e\n\u003cli\u003eBrass construction with zinc-plated finish for corrosion resistance\u003c\/li\u003e\n\u003cli\u003eMeets ASTM B633, QQ-B-626 Comp 22 Type 1 fastener standards\u003c\/li\u003e\n\u003cli\u003eRound body shape for consistent fitment in standard PCB mounting hole patterns\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or new-installation spacer for circuit board assemblies requiring a 6 screw, female unthreaded round standoff with a 0.25-inch outside diameter and 0.1875-inch overall length.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is typically performed by licensed electricians or trained HVAC technicians during control board replacement or assembly work. Always de-energize the equipment and follow applicable NEC lockout\/tagout procedures before handling circuit board hardware. Ensure mounting hole alignment before seating the spacer to avoid stress on the PCB. Minimum order quantity for this part is 10 units.\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\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: 6\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 0.1875 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\u003eOutside Diameter\u003c\/strong\u003e: 0.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInside Diameter\u003c\/strong\u003e: 0.141 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\u003eSystem of Measurement\u003c\/strong\u003e: Inch\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\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: S509-M01-F21-G\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ELECTRO HARDWARE","offers":[{"title":"Default Title","offer_id":51739485667634,"sku":"S509-M01-F21-G","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/64ed36ec3a1c33caaf172ec4e8fe95b6_1271123c-746e-4b82-b4c7-dd705945c425.jpg?v=1788815129","url":"https:\/\/voomisupply.com\/products\/electro-hardware-s509-m01-f21-g-round-circuit-board-spacer","provider":"Voomi Supply","version":"1.0","type":"link"}