{"product_id":"electro-hardware-s509-m04-f16-h-circuit-board-spacer","title":"Electro Hardware S509-M04-F16-H Circuit Board Spacer","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ELECTRO HARDWARE S509-M04-F16-H is a round, female unthreaded circuit board spacer machined from aluminum grade T-3 to the QQ-A-225A Comp 2 fastener standard. It measures 0.1875 inches overall length, 0.25 inches outside diameter, and 0.171 inches inside diameter. The uncoated finish and tight length tolerance of -0.005 to 0.005 inches make it suitable for precise PCB standoff applications. Sized for a number 8 screw, this spacer is installed by electronics technicians, electrical assemblers, and field service professionals who need reliable board standoffs in control panels, HVAC control boards, and similar assemblies.\u003c\/p\u003e\n\u003cp\u003eThis spacer is used in applications where a circuit board must be held at a fixed distance from a mounting surface without threading. Common install scenarios include residential and commercial HVAC control board assemblies, electrical enclosure PCB mounting, and industrial control panel builds. Its compact 0.1875-inch length is suited for tight board-to-chassis clearances where standard longer spacers would not fit. The aluminum construction keeps weight minimal while providing adequate rigidity for panel-mount environments.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eFemale unthreaded design accepts a number 8 screw without requiring tapping\u003c\/li\u003e\n  \u003cli\u003e0.1875 inches overall length with tight tolerance of -0.005 to 0.005 inches\u003c\/li\u003e\n  \u003cli\u003e0.25 inches outside diameter with 0.171 inches inside diameter and tolerance of 0.000 to 0.010 inches\u003c\/li\u003e\n  \u003cli\u003eAluminum grade T-3 construction, uncoated, per QQ-A-225A Comp 2 standard\u003c\/li\u003e\n  \u003cli\u003eRound body shape for consistent seating on PCB mounting surfaces\u003c\/li\u003e\n  \u003cli\u003eInch measurement system; compatible with standard number 8 fastener hardware\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or new-install spacer for circuit board assemblies using number 8 screw hardware in residential and commercial electrical or HVAC control applications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by licensed electricians or qualified electronics technicians. Always de-energize and lock out the control panel or circuit board assembly before servicing. Verify the mating screw size is number 8 before installation to avoid damaging the spacer bore. Standard hand tools and a torque-limiting screwdriver are recommended to prevent over-compression of the spacer against the board surface.\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\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\u003eMaterial\u003c\/strong\u003e: Aluminum Grade T-3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Uncoated\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: Number 8\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFastener Standard\u003c\/strong\u003e: QQ-A-225A Comp 2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSystem of Measurement\u003c\/strong\u003e: Inch\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-M04-F16-H\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ELECTRO HARDWARE","offers":[{"title":"Default Title","offer_id":51743843713330,"sku":"S509-M04-F16-H","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/be7d700197a7e1cf18cff52148bdf28b.jpg?v=1788850289","url":"https:\/\/voomisupply.com\/products\/electro-hardware-s509-m04-f16-h-circuit-board-spacer","provider":"Voomi Supply","version":"1.0","type":"link"}