{"product_id":"electro-hardware-ms1007m01f21f-round-circuit-board-spacer-m4","title":"Electro Hardware MS1007M01F21F Round Circuit Board Spacer M4","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ELECTRO HARDWARE MS1007M01F21F is a round, female unthreaded circuit board spacer designed for M4 screw applications in printed circuit board assemblies. Constructed from brass with a zinc-plated finish meeting ASTM B633 and QQ-B-626 Comp 22 Type 1 standards, this spacer provides reliable standoff support and electrical isolation between board layers or between a board and a mounting surface. The overall length is 4 mm, the outside diameter is 6 mm, and the inside diameter ranges from 4.2 to 4.8 mm. It is sized and toleranced for consistent, repeatable fitment in metric-spec assemblies.\u003c\/p\u003e\u003cp\u003eThis spacer is used in residential and commercial electronics assembly, control board manufacturing, and field replacement of circuit board hardware in HVAC controls, electrical enclosures, and industrial equipment. It is installed by electronics technicians, electrical contractors, and OEM assembly technicians wherever a secure, corrosion-resistant metric standoff is required between a PCB and a chassis or secondary board layer.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eBrass body with zinc-plated finish for corrosion resistance, compliant with ASTM B633 and QQ-B-626 Comp 22 Type 1\u003c\/li\u003e\n\u003cli\u003eFemale unthreaded design accepts M4 fasteners for secure board standoff mounting\u003c\/li\u003e\n\u003cli\u003e4 mm overall length with tight length tolerance of -0.13 to 0.13 mm for consistent stack height\u003c\/li\u003e\n\u003cli\u003eInside diameter tolerance of 0.000 to 0.270 mm ensures reliable M4 screw fitment\u003c\/li\u003e\n\u003cli\u003eRound body shape with 6 mm outside diameter for standard PCB mounting hole patterns\u003c\/li\u003e\n\u003cli\u003eMetric measurement system for compatibility with international fastener standards\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or service spacer for metric M4 circuit board standoff applications in control boards, electrical enclosures, and PCB assemblies requiring a 4 mm brass spacer with zinc-plated finish.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis spacer is installed by electronics technicians or licensed electricians working on control board assemblies or enclosures. Power down and de-energize all circuits before removing or installing circuit board hardware. Use appropriately sized M4 fasteners and avoid overtightening, which can crack the board substrate or deform the spacer. Follow applicable NEC guidelines when servicing energized electrical enclosures.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Brass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Zinc-Plated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: M4\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: 4 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInside Diameter\u003c\/strong\u003e: 4.2 to 4.8 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutside Diameter\u003c\/strong\u003e: 6 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength Tolerance\u003c\/strong\u003e: -0.13 to 0.13 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInside Diameter Tolerance\u003c\/strong\u003e: 0.000 to 0.270 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFastener Standard\u003c\/strong\u003e: ASTM B633, QQ-B-626 Comp 22 Type 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem of Measurement\u003c\/strong\u003e: Metric\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.0032 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 31161816\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: MS1007M01F21F\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ELECTRO HARDWARE","offers":[{"title":"Default Title","offer_id":51732002701618,"sku":"MS1007M01F21F","price":16.67,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/ebd8695a24e2b6532e3d3f30a7e1347f_81313263-8c82-44de-99f9-2e05c11e6bcb.jpg?v=1788737923","url":"https:\/\/voomisupply.com\/products\/electro-hardware-ms1007m01f21f-round-circuit-board-spacer-m4","provider":"Voomi Supply","version":"1.0","type":"link"}