{"product_id":"electro-hardware-s517m17f16e-circuit-board-spacer-nylon","title":"Electro Hardware S517M17F16E Circuit Board Spacer Nylon","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ELECTRO HARDWARE S517M17F16E is a round, female unthreaded circuit board spacer designed for use with No. 4 screw sizes. Molded from Nylon Grade 101 and supplied in an uncoated finish, this spacer provides reliable electrical isolation and mechanical standoff between a PCB and a mounting surface or adjacent board layer. It measures 0.3125 inches overall length, 0.25 inches outside diameter, and 0.116 inches inside diameter. Manufactured to MIL-P-17091B fastener standards, it is suited for applications where dimensional consistency and material compliance are required.\u003c\/p\u003e\u003cp\u003eThis spacer is used in electronic assembly and circuit board mounting applications across HVAC control boards, electrical enclosures, and industrial panel builds. Its round body and female unthreaded bore accept a No. 4 fastener for straightforward stacking or standoff configurations. Electricians, control board technicians, and electronics assemblers working in both residential and commercial trade environments will find this spacer appropriate for tight-tolerance PCB installations where a compact, lightweight standoff is needed.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eMIL-P-17091B compliant construction for consistent dimensional and material standards\u003c\/li\u003e\n\u003cli\u003eNylon Grade 101 material provides electrical isolation and corrosion resistance\u003c\/li\u003e\n\u003cli\u003eFemale unthreaded bore sized for No. 4 screw applications\u003c\/li\u003e\n\u003cli\u003eOverall length of 0.3125 inches with a 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 fastener shanks\u003c\/li\u003e\n\u003cli\u003eUncoated finish  -  no additional coating to affect dimensional stack-up\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard No. 4 screw-size round circuit board spacer suitable for PCB standoff and isolation applications in electrical, HVAC, and industrial control panel assemblies where MIL-P-17091B compliance is specified.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by electricians or electronics technicians during board assembly or panel build. Power down all circuits and discharge any capacitors before working on or near live control boards. Use hand tools appropriate for No. 4 fasteners and avoid overtightening, which can crack or deform the nylon body. Follow applicable NEC guidelines and equipment manufacturer instructions for PCB mounting procedures.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Nylon Grade 101\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: 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\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: 0.3125 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: 0.116 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\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: 0.01 pounds\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: S517M17F16E\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ELECTRO HARDWARE","offers":[{"title":"Default Title","offer_id":51783279608114,"sku":"S517M17F16E","price":1025.17,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/77a25e3dc5f4fc5ac11e63446f23317e.jpg?v=1789187706","url":"https:\/\/voomisupply.com\/products\/electro-hardware-s517m17f16e-circuit-board-spacer-nylon","provider":"Voomi Supply","version":"1.0","type":"link"}