{"product_id":"electro-hardware-s545-m04-f16-e-circuit-board-spacer-aluminum","title":"Electro Hardware S545-M04-F16-E Circuit Board Spacer Aluminum","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ELECTRO HARDWARE S545-M04-F16-E is a round, female unthreaded circuit board spacer machined from aluminum grade T-3 to the QQ-A-225A Comp 2 fastener standard. It accepts a number 4 screw, has an overall length of 0.75 inches, an outside diameter of 0.25 inches, and an inside diameter of 0.116 inches. This type of spacer is installed between a printed circuit board and a mounting surface or between stacked boards to maintain precise separation, prevent contact shorts, and provide a secure, non-threaded female receptacle for fastening hardware. The uncoated aluminum finish suits applications where weight, corrosion resistance, and electrical conductivity are relevant design factors. Electronics technicians, control board assemblers, and field service technicians working on HVAC control assemblies, electrical panels, and similar equipment install this hardware.\u003c\/p\u003e\n\u003cp\u003eThis spacer is suited for use in circuit board mounting applications found in residential and commercial HVAC control boards, electrical enclosures, and industrial electronics assemblies. Its inch-system dimensions and number 4 screw compatibility make it a standard fit for control board mounting configurations commonly encountered in trade service work. The female unthreaded body allows a mating screw to pass through from the board side and seat firmly without requiring a pre-tapped hole in the spacer itself.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eFemale unthreaded round body accepts number 4 screws\u003c\/li\u003e\n  \u003cli\u003eOverall length of 0.75 inches with a length tolerance of -0.005 to 0.005 inches\u003c\/li\u003e\n  \u003cli\u003eOutside diameter of 0.25 inches and inside diameter of 0.116 inches\u003c\/li\u003e\n  \u003cli\u003eInside diameter tolerance of 0.000 to 0.010 inches for consistent fit\u003c\/li\u003e\n  \u003cli\u003eMachined from aluminum grade T-3 per QQ-A-225A Comp 2 fastener standard\u003c\/li\u003e\n  \u003cli\u003eUncoated finish  -  no plating or coating to affect conductivity or clearance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or service spacer for circuit board mounting applications requiring a number 4 female unthreaded round spacer with a 0.75-inch overall length and inch-system dimensions.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by electronics technicians or field service technicians. Always power down and de-energize any control board assembly before removing or installing circuit board hardware. Use the correct number 4 fastener to avoid stripping the unthreaded bore. Handle aluminum spacers carefully to avoid deformation that could alter the inside diameter tolerance and affect proper screw seating.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Aluminum\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: T-3\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\u003eScrew Size\u003c\/strong\u003e: Number 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: 0.75 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\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\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\u003ePackage Quantity\u003c\/strong\u003e: 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMinimum Order Quantity\u003c\/strong\u003e: 5\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: S545-M04-F16-E\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ELECTRO HARDWARE","offers":[{"title":"Default Title","offer_id":51743617417522,"sku":"S545-M04-F16-E","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/64ed36ec3a1c33caaf172ec4e8fe95b6_c871e1b1-0b26-4f78-b001-25d81f41dcb8.jpg?v=1788848458","url":"https:\/\/voomisupply.com\/products\/electro-hardware-s545-m04-f16-e-circuit-board-spacer-aluminum","provider":"Voomi Supply","version":"1.0","type":"link"}