{"product_id":"electro-hardware-ms1023m01f21f-circuit-board-spacer-m4","title":"Electro Hardware MS1023M01F21F Circuit Board Spacer M4","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ELECTRO HARDWARE MS1023M01F21F is a round, female unthreaded circuit board spacer designed to create precise standoff clearance between a PCB and a mounting surface or secondary board. Built from brass with a zinc-plated finish meeting ASTM B633 and QQ-B-626 Comp 22 Type 1 standards, this spacer delivers solid corrosion resistance in electronics assembly environments. It accepts an M4 screw, measures 12 mm overall length, and has an outside diameter of 6 mm with an inside diameter ranging from 4.2 to 4.8 mm. Electronics assemblers, PCB technicians, and electrical enclosure builders use this type of hardware in both production and field service applications.\u003c\/p\u003e\u003cp\u003eThis spacer is suited for metric-fastener PCB mounting applications where consistent standoff height and reliable electrical isolation between board layers are required. Its compact 6 mm outside diameter fits standard board mounting hole patterns. The brass base material with zinc plating resists oxidation and maintains conductivity where chassis grounding through the standoff is part of the design. Typical use cases include control board assemblies, industrial enclosures, HVAC control boards, and general electronics cabinetry requiring M4 metric hardware.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eFemale unthreaded body accepts M4 screw for secure, repeatable standoff mounting\u003c\/li\u003e\n\u003cli\u003eBrass construction with zinc-plated finish meets ASTM B633 and QQ-B-626 Comp 22 Type 1 standards\u003c\/li\u003e\n\u003cli\u003e12 mm overall length with a tight length tolerance of -0.13 to 0.13 mm for consistent stack height\u003c\/li\u003e\n\u003cli\u003e6 mm outside diameter fits standard metric PCB mounting footprints\u003c\/li\u003e\n\u003cli\u003eInside diameter range of 4.2 to 4.8 mm with tolerance of 0.000 to 0.270 mm\u003c\/li\u003e\n\u003cli\u003eRound body shape simplifies alignment and installation in tight board layouts\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a metric-standard M4 round circuit board spacer for use in PCB assemblies, control board enclosures, and electronics mounting applications requiring a female unthreaded standoff with a 6 mm outside diameter and 12 mm overall length.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by electronics technicians or electricians during board assembly or enclosure build-out. Discharge any static and power down the assembly before handling PCBs or installing standoffs. Use an appropriately sized M4 driver and avoid overtightening, which can crack the board or strip the standoff bore. Follow applicable IPC standards for PCB assembly hardware when working in production environments.\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\u003eFastener Standard\u003c\/strong\u003e: ASTM B633, QQ-B-626 Comp 22 Type 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScrew 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: 12 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\u003eOutside Diameter\u003c\/strong\u003e: 6 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\u003eInside Diameter Tolerance\u003c\/strong\u003e: 0.000 to 0.270 mm\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: 0.00688 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: MS1023M01F21F\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ELECTRO HARDWARE","offers":[{"title":"Default Title","offer_id":51731408814386,"sku":"MS1023M01F21F","price":17.84,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/ebd8695a24e2b6532e3d3f30a7e1347f_12e456b6-5da1-4efb-a5b1-f305092ba697.jpg?v=1788730665","url":"https:\/\/voomisupply.com\/products\/electro-hardware-ms1023m01f21f-circuit-board-spacer-m4","provider":"Voomi Supply","version":"1.0","type":"link"}