{"product_id":"electro-hardware-s289m17f16e-round-circuit-board-spacer","title":"Electro Hardware S289M17F16E Round Circuit Board Spacer","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ELECTRO HARDWARE S289M17F16E is a round, female unthreaded circuit board spacer designed to maintain precise standoff distances between PCBs and mounting surfaces or between stacked boards. Sized at 0.1875 inches overall length with a 0.116 inch inside diameter and 0.1875 inch outside diameter, this spacer accepts a number 4 screw and is molded from Nylon Grade 101. The uncoated finish and compliance with MIL-P-17091B make it appropriate for electronics assembly work in commercial, industrial, and military-adjacent applications. Electricians, electronics technicians, and PCB assembly professionals install these spacers during board mounting and rework.\u003c\/p\u003e\n\u003cp\u003eThis spacer is used wherever a compact, lightweight standoff is needed to isolate a circuit board from a chassis or adjacent board layer. Its small form factor suits densely populated PCB assemblies in control panels, HVAC control boards, and similar equipment. The female unthreaded body accepts a number 4 fastener, allowing for secure, vibration-resistant board mounting without threading the spacer body itself. Minimum order quantity is 100 units, making it suited for production assembly and service stock replenishment.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eNylon Grade 101 construction — lightweight, non-conductive, and chemically resistant\u003c\/li\u003e\n  \u003cli\u003eMeets MIL-P-17091B fastener standard for dimensional and material consistency\u003c\/li\u003e\n  \u003cli\u003eFemale unthreaded design accepts number 4 screws without internal threading\u003c\/li\u003e\n  \u003cli\u003eTight dimensional tolerances: length tolerance of -0.005 to 0.005 inches, ID tolerance of 0.000 to 0.010 inches\u003c\/li\u003e\n  \u003cli\u003eUncoated bright finish — no secondary coating to affect dielectric properties or board clearance\u003c\/li\u003e\n  \u003cli\u003eRound body shape for symmetrical load distribution on PCB mounting holes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or production-run spacer for circuit board assemblies requiring a number 4 screw, female unthreaded round standoff with a 3\/16 inch overall length and 3\/16 inch outside diameter.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eElectronics technicians and PCB assembly personnel install these spacers during board mounting or rework procedures. Power down and de-energize all circuits before handling or repositioning any circuit board assembly. Use appropriate ESD precautions when working near populated boards. Do not overtighten the mating number 4 fastener, as nylon spacers can crack or deform under excessive clamping load.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 0.1875 inches (3\/16 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\u003eOutside Diameter\u003c\/strong\u003e: 0.1875 inches (3\/16 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\u003eScrew Size\u003c\/strong\u003e: Number 4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Type\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: Nylon Grade 101\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Uncoated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFastener Standard\u003c\/strong\u003e: MIL-P-17091B\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  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 31161816\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: S289M17F16E\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ELECTRO HARDWARE","offers":[{"title":"Default Title","offer_id":51734971547954,"sku":"S289M17F16E","price":786.64,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/64ed36ec3a1c33caaf172ec4e8fe95b6_44ab6c15-5433-4da0-8fc8-fa75de686aa9.jpg?v=1788768735","url":"https:\/\/voomisupply.com\/products\/electro-hardware-s289m17f16e-round-circuit-board-spacer","provider":"Voomi Supply","version":"1.0","type":"link"}