{"product_id":"electro-hardware-s789-mo4-f16-e-circuit-board-spacer","title":"Electro Hardware S789-MO4-F16-E Circuit Board Spacer","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ELECTRO HARDWARE S789-MO4-F16-E is a round, female unthreaded circuit board spacer designed to maintain precise separation between a PCB and a mounting surface or adjacent board. Machined from aluminum grade T-3 to the QQ-A-225A Comp 2 fastener standard, this spacer accepts a number 4 screw and holds tight dimensional tolerances suited to precision electronics assembly. Overall length is 0.1875 inches, inside diameter is 0.116 inches, and outside diameter is 0.3125 inches. The uncoated finish is appropriate for applications where bare aluminum conductivity or weight savings is a factor. Electronics assemblers and field technicians use this hardware when mounting control boards in HVAC equipment, electrical enclosures, and similar trade applications.\u003c\/p\u003e\n\u003cp\u003eThis spacer is suited for residential and light commercial applications wherever a number 4 fastener is used to mount or stack circuit boards. Common install scenarios include control board mounting inside furnace cabinets, air handler electrical compartments, and low-voltage control enclosures. The compact 0.1875-inch overall length makes it appropriate for tight board-to-panel clearances. The round body profile and female unthreaded design allow a screw to pass through or thread into mating hardware on either side of the assembly.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eFemale unthreaded, round body  -  accepts number 4 screw for secure board standoff mounting\u003c\/li\u003e\n  \u003cli\u003eOverall length of 0.1875 inches with a length tolerance of -0.005 to 0.005 inches for precise stack height\u003c\/li\u003e\n  \u003cli\u003eInside diameter of 0.116 inches with a tolerance of 0.000 to 0.010 inches\u003c\/li\u003e\n  \u003cli\u003eOutside diameter of 0.3125 inches provides a stable footprint on the board surface\u003c\/li\u003e\n  \u003cli\u003eAluminum grade T-3 construction per QQ-A-225A Comp 2 fastener standard\u003c\/li\u003e\n  \u003cli\u003eUncoated finish  -  no added coating that could affect fit or electrical contact\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 number 4 screw, female unthreaded aluminum spacer with a 0.1875-inch overall length.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is typically performed by electronics assemblers or licensed technicians during control board replacement or panel assembly. Always de-energize and lock out the equipment before servicing any control board or electrical enclosure. Use a hand driver or low-torque screwdriver to seat the fastener  -  do not overtighten, as aluminum spacers can deform under excessive load. Verify screw thread engagement and board clearance before restoring power.\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: 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: 0.1875 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: 0.3125 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\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: S789-MO4-F16-E\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ELECTRO HARDWARE","offers":[{"title":"Default Title","offer_id":51743241666866,"sku":"S789-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_9b7bec5c-2450-4dca-9944-19ab33f81485.jpg?v=1788844402","url":"https:\/\/voomisupply.com\/products\/electro-hardware-s789-mo4-f16-e-circuit-board-spacer","provider":"Voomi Supply","version":"1.0","type":"link"}