{"product_id":"electro-hardware-ms1003m01f21f-circuit-board-spacer-m4","title":"Electro Hardware MS1003M01F21F Circuit Board Spacer M4","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ELECTRO HARDWARE MS1003M01F21F is a round, female unthreaded circuit board spacer designed to create precise standoff clearance between a PCB and a mounting surface. Manufactured from brass with a zinc-plated finish per ASTM B633 and QQ-B-626 Comp 22 Type 1, this spacer delivers corrosion resistance suitable for electronics assembly environments. The metric M4 screw size, 2 mm overall length, 4.2 to 4.8 mm inside diameter range, and 6 mm outside diameter make it a compact, accurate solution for board-level hardware builds. Electronics assemblers, panel builders, and industrial electricians install this type of fastener during PCB mounting and enclosure assembly operations.\u003c\/p\u003e\u003cp\u003eThis spacer is suited for metric-fastener PCB assemblies in residential control boards, commercial electrical enclosures, and industrial panel applications where consistent board standoff height and secure mechanical support are required. The female unthreaded design accepts M4 hardware and is specified by engineers and technicians working within metric measurement systems. Its small form factor makes it appropriate for dense board layouts where space between mounting points is limited.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eBrass construction with zinc-plated finish per ASTM B633 and QQ-B-626 Comp 22 Type 1\u003c\/li\u003e\n\u003cli\u003eM4 screw size, female unthreaded body for standard metric fastener compatibility\u003c\/li\u003e\n\u003cli\u003e2 mm overall length with a length tolerance of -0.13 to 0.13 mm for consistent standoff height\u003c\/li\u003e\n\u003cli\u003eInside diameter range of 4.2 to 4.8 mm with a tolerance of 0.000 to 0.270 mm\u003c\/li\u003e\n\u003cli\u003e6 mm outside diameter, round body shape for stable seating on PCB mounting pads\u003c\/li\u003e\n\u003cli\u003eMinimum order quantity of 10 units for efficient project-quantity sourcing\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a metric-standard round circuit board spacer for M4 fastener applications in PCB mounting and electronics enclosure assemblies.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by electronics assemblers, panel builders, or licensed electricians during PCB mounting procedures. De-energize all circuits and discharge any stored energy before working inside enclosures. Use calibrated metric tooling to avoid over-driving and deforming the unthreaded bore. Follow applicable assembly documentation and any relevant NEC or IPC standards for electronic assembly workmanship.\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\u003eOverall Length\u003c\/strong\u003e: 2 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\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\u003eOutside Diameter\u003c\/strong\u003e: 6 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody Shape\u003c\/strong\u003e: Round\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: 0.00232 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum Order Quantity\u003c\/strong\u003e: 10\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: MS1003M01F21F\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ELECTRO HARDWARE","offers":[{"title":"Default Title","offer_id":51730012438834,"sku":"MS1003M01F21F","price":20.87,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/ebd8695a24e2b6532e3d3f30a7e1347f_5d157bba-f9f5-486f-a7c1-97ddf6d05cd4.jpg?v=1788710163","url":"https:\/\/voomisupply.com\/products\/electro-hardware-ms1003m01f21f-circuit-board-spacer-m4","provider":"Voomi Supply","version":"1.0","type":"link"}