{"product_id":"electro-hardware-s509-m07-f16-e-circuit-board-spacer-4-stainless","title":"Electro Hardware S509-M07-F16-E Circuit Board Spacer 4 Stainless","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ELECTRO HARDWARE S509-M07-F16-E is a round, female unthreaded circuit board spacer designed for No. 4 screw applications in PCB mounting assemblies. Manufactured from 18-8 Grade 303 stainless steel and left uncoated, this spacer provides corrosion resistance and dimensional stability under typical board mounting loads. It measures 0.1875 inches overall length, with an inside diameter of 0.116 inches and an outside diameter of 0.25 inches. The female unthreaded design accepts a No. 4 screw passed through the bore, spacing the board at a fixed standoff height. Electricians, electronics technicians, and control board installers use this type of hardware when mounting PCBs inside HVAC control enclosures, electrical panels, and similar assemblies.\u003c\/p\u003e\n\u003cp\u003eThis spacer is suited for residential and light commercial applications wherever printed circuit boards require a rigid, corrosion-resistant standoff. Common install scenarios include control board mounting in HVAC equipment, electrical enclosures, and industrial equipment panels. The stainless steel construction meets fastener standard QQ-S-763, making it appropriate for environments where moisture or chemical exposure may be present. The uncoated finish ensures consistent dimensional tolerances without adding coating thickness that could affect fit.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e18-8 Grade 303 stainless steel construction for corrosion resistance\u003c\/li\u003e\n  \u003cli\u003eFemale unthreaded bore accepts No. 4 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\u003eInside diameter of 0.116 inches with tolerance of 0.000 to 0.010 inches\u003c\/li\u003e\n  \u003cli\u003eOutside diameter of 0.25 inches for compact board spacing\u003c\/li\u003e\n  \u003cli\u003eMeets fastener standard QQ-S-763; uncoated finish preserves true dimensions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or standard hardware component for circuit board mounting applications requiring a No. 4 screw, round female unthreaded spacer in inch measurements.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by electricians or electronics technicians. Always power down and de-energize the equipment before removing or installing circuit board hardware. Use calibrated hand tools to avoid overtightening, which can crack PCB mounting holes or deform the spacer bore. Follow applicable NEC guidelines when working inside electrical enclosures.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Stainless Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: 18-8, 303\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. 4\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\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\u003eOutside Diameter\u003c\/strong\u003e: 0.25 inches\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: QQ-S-763\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: S509-M07-F16-E\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ELECTRO HARDWARE","offers":[{"title":"Default Title","offer_id":51739306885426,"sku":"S509-M07-F16-E","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/33435265d6d381217befa50a94374d76.jpg?v=1788812923","url":"https:\/\/voomisupply.com\/products\/electro-hardware-s509-m07-f16-e-circuit-board-spacer-4-stainless","provider":"Voomi Supply","version":"1.0","type":"link"}