{"product_id":"electro-hardware-s537m17f16h-round-circuit-board-spacer","title":"Electro Hardware S537M17F16H Round Circuit Board Spacer","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ELECTRO HARDWARE S537M17F16H is a round, female unthreaded circuit board spacer designed to maintain precise separation between a printed circuit board and a mounting surface or adjacent board. Manufactured from Nylon Grade 101 to MIL-P-17091B, this spacer measures 0.625 inches overall length with a 0.25 inches outside diameter and a 0.171 inches inside diameter sized for a No. 8 screw. The uncoated finish keeps the profile clean and interference-free in tight PCB assemblies. It is installed by electronics technicians, HVAC controls technicians, and electrical tradespeople working on control board mounting applications.\u003c\/p\u003e\n\u003cp\u003eThis spacer is suited for use in residential and light commercial control board assemblies, panel-mount PCB installations, and equipment where a standardized standoff solution is needed for No. 8 fastener patterns. It applies wherever a female unthreaded round spacer conforming to MIL-P-17091B dimensional and material standards is specified. The nylon construction provides electrical isolation between the board and the mounting chassis, making it appropriate for both high-volume OEM assembly and field repair work.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eNylon Grade 101 construction provides electrical insulation between PCB and chassis\u003c\/li\u003e\n  \u003cli\u003eConforms to MIL-P-17091B fastener standard for consistent dimensional compliance\u003c\/li\u003e\n  \u003cli\u003eFemale unthreaded body accepts a No. 8 screw with 0.171 inches inside diameter\u003c\/li\u003e\n  \u003cli\u003eOverall length of 0.625 inches with tight length tolerance of -0.005 to 0.005 inches\u003c\/li\u003e\n  \u003cli\u003eInside diameter tolerance of 0.000 to 0.010 inches for controlled fit on No. 8 hardware\u003c\/li\u003e\n  \u003cli\u003eUncoated bright finish — no added material to alter clearance or dielectric properties\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 round, female unthreaded nylon standoff sized for No. 8 screw hardware per MIL-P-17091B.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by electronics technicians or controls electricians during PCB mounting or replacement procedures. De-energize all control circuits and discharge any stored capacitance before handling circuit boards or fasteners. Standard hand tools and the correct No. 8 fastener are all that is required. Do not overtighten fasteners through nylon spacers, as the unthreaded bore can deform under excessive clamp load.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Nylon Grade 101\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFastener Standard\u003c\/strong\u003e: MIL-P-17091B\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: No. 8\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 0.625 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: 0.171 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\u003eFinish\u003c\/strong\u003e: Uncoated\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: 0.001 pounds\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: S537M17F16H\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ELECTRO HARDWARE","offers":[{"title":"Default Title","offer_id":51746526331186,"sku":"S537M17F16H","price":970.46,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/913ca0b2d4112b84aa0ced5416b9b078.jpg?v=1788871029","url":"https:\/\/voomisupply.com\/products\/electro-hardware-s537m17f16h-round-circuit-board-spacer","provider":"Voomi Supply","version":"1.0","type":"link"}