{"product_id":"electro-hardware-s857-mo4-f16-e-circuit-board-spacer-no-4","title":"Electro Hardware S857-MO4-F16-E Circuit Board Spacer No. 4","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ELECTRO HARDWARE S857-MO4-F16-E is a round, female unthreaded circuit board spacer designed to maintain consistent standoff clearance between a PCB and its mounting surface. Machined from T-3 grade aluminum to the QQ-A-225A Comp 2 fastener standard, this spacer accepts a No. 4 screw and holds an overall length of 1.25 inches. The bore measures 0.116 inches inside diameter with a tolerance range of 0.000 to 0.010 inches, and the outside diameter is 0.3125 inches. It ships uncoated. Electricians, electronics technicians, and HVAC control board installers use this type of hardware when mounting circuit boards in control enclosures, panels, and equipment chassis.\u003c\/p\u003e\n\u003cp\u003eThis spacer is suited for residential and light commercial applications wherever a No. 4 fastener is used to mount a printed circuit board. Typical install scenarios include control board replacement in HVAC equipment, electrical panel subassemblies, and industrial enclosures requiring a precise, fixed standoff height. Its aluminum construction keeps weight low while providing adequate rigidity for stable board mounting. The uncoated finish is appropriate for indoor, non-corrosive environments.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eT-3 grade aluminum construction meets QQ-A-225A Comp 2 fastener standard\u003c\/li\u003e\n  \u003cli\u003eFemale unthreaded bore accepts No. 4 screws for secure board mounting\u003c\/li\u003e\n  \u003cli\u003eOverall length of 1.25 inches provides consistent standoff height\u003c\/li\u003e\n  \u003cli\u003eInside diameter of 0.116 inches with a tight tolerance of 0.000 to 0.010 inches\u003c\/li\u003e\n  \u003cli\u003eOutside diameter of 0.3125 inches (5\/16 inches) in a round body profile\u003c\/li\u003e\n  \u003cli\u003eUncoated finish suitable for protected indoor enclosures\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard No. 4 screw circuit board spacer for use in any application requiring a female unthreaded round aluminum standoff with a 1.25-inch overall length and 0.3125-inch outside diameter.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is typically performed by electricians or electronics technicians during control board service or new panel assembly. De-energize the equipment completely before removing or installing any circuit board hardware. Use calibrated hand tools and avoid over-torquing fasteners into the unthreaded bore, as aluminum is softer than steel and threads can strip. Follow applicable NEC guidelines and equipment manufacturer instructions 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: 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\u003eOverall Length\u003c\/strong\u003e: 1.25 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: 0.3125 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eScrew Size\u003c\/strong\u003e: No. 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\u003eFinish\u003c\/strong\u003e: Uncoated\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: S857-MO4-F16-E\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ELECTRO HARDWARE","offers":[{"title":"Default Title","offer_id":51742958649650,"sku":"S857-MO4-F16-E","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/64ed36ec3a1c33caaf172ec4e8fe95b6_b50b4202-c980-4934-b657-79d494a76995.jpg?v=1788840794","url":"https:\/\/voomisupply.com\/products\/electro-hardware-s857-mo4-f16-e-circuit-board-spacer-no-4","provider":"Voomi Supply","version":"1.0","type":"link"}