{"product_id":"electro-hardware-s1079-m10-f21-j-circuit-board-spacer","title":"Electro Hardware S1079-M10-F21-J Circuit Board Spacer","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ELECTRO HARDWARE S1079-M10-F21-J is a round, female unthreaded circuit board spacer machined from Grade 2 steel with a zinc-plated finish. It measures 0.5 inches overall length (OAL), 0.375 inches outside diameter (OD), and 0.219 inches inside diameter (ID). The female unthreaded bore accepts a 12 screw and is held to a length tolerance of -0.005 to 0.005 inches, making it suitable for applications that require precise board standoff height. The zinc plating conforms to ASTM B633 and QQ-S-633 Type 1, providing corrosion resistance in typical indoor electronic assembly environments. Electronics assembly technicians and field service professionals install this spacer where a controlled, repeatable standoff between a circuit board and a mounting surface is required.\u003c\/p\u003e\n\u003cp\u003eThis spacer is used in electronic control board mounting applications across HVAC, industrial, and general electronics assemblies. It is sized for 12 screws and provides a 0.5-inch standoff to keep circuit boards clear of chassis surfaces, reducing the risk of short circuits and allowing airflow beneath the board. Its compact 0.375-inch OD makes it appropriate for densely populated board layouts where clearance between neighboring components is limited. It ships in single-unit quantities with no minimum order requirement above one piece.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eFemale unthreaded bore sized for 12 screws\u003c\/li\u003e\n  \u003cli\u003e0.5-inch OAL with tight length tolerance of -0.005 to 0.005 inches\u003c\/li\u003e\n  \u003cli\u003e0.219-inch ID with tolerance range of 0.000 to 0.010 inches\u003c\/li\u003e\n  \u003cli\u003e0.375-inch OD round body for compact board layouts\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\u003eInch measurement system; sold individually\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or new-installation spacer for circuit board mounting applications requiring a 12 screw, female unthreaded round standoff with a 0.5-inch OAL.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eElectronics assembly technicians and HVAC control board service technicians typically install this spacer. De-energize all equipment and discharge any capacitors before handling circuit boards or replacing standoffs. Use appropriate ESD precautions when working near sensitive board components. Verify that the mating screw size and board hole diameter are compatible before installation to avoid board damage.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length (OAL)\u003c\/strong\u003e: 0.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInside Diameter (ID)\u003c\/strong\u003e: 0.219 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutside Diameter (OD)\u003c\/strong\u003e: 0.375 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\u003eID Tolerance\u003c\/strong\u003e: 0.000 to 0.010 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 12\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: 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\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: S1079-M10-F21-J\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ELECTRO HARDWARE","offers":[{"title":"Default Title","offer_id":51739606253874,"sku":"S1079-M10-F21-J","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/bf8eacf899c2949595e527f0828a009d.jpg?v=1788816842","url":"https:\/\/voomisupply.com\/products\/electro-hardware-s1079-m10-f21-j-circuit-board-spacer","provider":"Voomi Supply","version":"1.0","type":"link"}