{"product_id":"electro-hardware-s513-m07-f16-h-round-circuit-board-spacer","title":"Electro Hardware S513-M07-F16-H Round Circuit Board Spacer","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ELECTRO HARDWARE S513-M07-F16-H is a round, female unthreaded circuit board spacer designed to maintain precise standoff distances between a printed circuit board and a mounting surface or secondary board. Manufactured from 18-8 and 303 grade stainless steel to the QQ-S-763 fastener standard, this spacer delivers corrosion resistance and dimensional consistency in demanding environments. It measures 0.25 inches overall length with a 0.25-inch outside diameter and a 0.171-inch inside diameter. The uncoated finish keeps tolerances tight. Electricians, electronics technicians, and control board installers use this type of hardware when securing boards in HVAC control panels, electrical enclosures, and similar assemblies.\u003c\/p\u003e\u003cp\u003eThis spacer fits applications requiring a No. 8 screw size and a compact 0.25-inch standoff. It is suited for use in residential and light commercial control boards, panel enclosures, and any assembly where a low-profile round spacer with a female unthreaded bore is specified. The stainless steel construction makes it appropriate for environments with exposure to moisture or mild chemicals where a zinc or aluminum spacer would degrade prematurely.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e18-8 and 303 grade stainless steel construction meets QQ-S-763 fastener standard\u003c\/li\u003e\n\u003cli\u003eFemale unthreaded bore accepts No. 8 fasteners for secure board mounting\u003c\/li\u003e\n\u003cli\u003e0.25-inch overall length with length tolerance of -0.005 to 0.005 inches for consistent standoff height\u003c\/li\u003e\n\u003cli\u003e0.171-inch inside diameter with inside diameter tolerance of 0.000 to 0.010 inches\u003c\/li\u003e\n\u003cli\u003eUncoated finish preserves dimensional accuracy and avoids coating interference in tight assemblies\u003c\/li\u003e\n\u003cli\u003eRound body shape provides uniform load distribution around the mounting hole\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard-dimension round circuit board spacer for assemblies specifying a No. 8 screw size, 0.25-inch OAL, and a 0.25-inch OD female unthreaded standoff in inch-system measurements.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by electricians or electronics technicians during control board assembly or replacement in panel enclosures. Power down and de-energize the enclosure fully before working on any control board mounting hardware. Use calibrated torque tools appropriate for No. 8 fasteners to avoid over-compression of the spacer or board substrate. Verify standoff height requirements against the board manufacturer's mounting specification before final assembly.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\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 and 303\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFastener Standard\u003c\/strong\u003e: QQ-S-763\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScrew Size\u003c\/strong\u003e: No. 8\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: 0.25 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\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\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\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\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: S513-M07-F16-H\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ELECTRO HARDWARE","offers":[{"title":"Default Title","offer_id":51740682256690,"sku":"S513-M07-F16-H","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/34197f882142e25237be2520cb1882d1.jpg?v=1788826688","url":"https:\/\/voomisupply.com\/products\/electro-hardware-s513-m07-f16-h-round-circuit-board-spacer","provider":"Voomi Supply","version":"1.0","type":"link"}