{"product_id":"electro-hardware-ms1025m01f21f-circuit-board-spacer-m4","title":"Electro Hardware MS1025M01F21F Circuit Board Spacer M4","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ELECTRO HARDWARE MS1025M01F21F is a round, female unthreaded circuit board spacer designed for M4 screw applications in printed circuit board assemblies. Manufactured from brass and finished with a zinc plating per ASTM B633, QQ-B-626 Comp 22 Type 1, this spacer provides corrosion resistance and consistent electrical standoff performance. It measures 13 mm (approximately 0.512 inches) in overall length, with an outside diameter of 6 mm (approximately 0.236 inches) and an inside diameter ranging from 4.2 to 4.8 mm (approximately 0.165 to 0.189 inches). The metric construction and close-tolerance body suit installations where consistent board-to-board or board-to-chassis clearance is required. Electronics technicians, panel builders, and field service pros use this type of spacer to secure and isolate PCBs in control enclosures.\u003c\/p\u003e\u003cp\u003eThis spacer is suited for use in residential and commercial HVAC control boards, electrical panels, motor drives, and similar equipment where M4 metric hardware is standard. It is appropriate for any application requiring a round brass standoff to maintain precise separation between a circuit board and a mounting surface or adjacent board. Its female unthreaded bore accepts an M4 fastener passed through from the board side, making it a straightforward drop-in component during board mounting or replacement work.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eBrass body with zinc plating per ASTM B633 and QQ-B-626 Comp 22 Type 1 for corrosion resistance\u003c\/li\u003e\n\u003cli\u003eFemale unthreaded design accepts M4 fasteners\u003c\/li\u003e\n\u003cli\u003eOverall length of 13 mm (approximately 0.512 inches) for consistent PCB standoff height\u003c\/li\u003e\n\u003cli\u003eOutside diameter of 6 mm (approximately 0.236 inches) fits standard PCB mounting hole patterns\u003c\/li\u003e\n\u003cli\u003eInside diameter tolerance of 0.000 to 0.270 mm ensures reliable fastener fit\u003c\/li\u003e\n\u003cli\u003eMetric system of measurement for compatibility with M4 hardware assemblies\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in any M4 metric circuit board mounting application requiring a round, female unthreaded brass spacer with a 13 mm standoff length and 6 mm outside diameter.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by electronics technicians or control board service personnel. Power down and de-energize the equipment fully before handling any circuit board assembly. Use appropriately sized M4 fasteners and avoid over-tightening, which can crack the PCB substrate or deform the spacer body. Follow applicable electrical codes and equipment manufacturer guidelines when servicing control board 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\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\u003eOverall Length\u003c\/strong\u003e: 13 mm (approximately 0.512 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutside Diameter\u003c\/strong\u003e: 6 mm (approximately 0.236 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInside Diameter\u003c\/strong\u003e: 4.2 to 4.8 mm (approximately 0.165 to 0.189 inches)\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\u003eLength Tolerance\u003c\/strong\u003e: -0.130 to 0.130 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody Shape\u003c\/strong\u003e: Round\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType\u003c\/strong\u003e: Female Unthreaded\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: 0.00744 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: MS1025M01F21F\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ELECTRO HARDWARE","offers":[{"title":"Default Title","offer_id":51731282821426,"sku":"MS1025M01F21F","price":18.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/ebd8695a24e2b6532e3d3f30a7e1347f_635b6863-11b1-4462-b0be-26508b77621c.jpg?v=1788729251","url":"https:\/\/voomisupply.com\/products\/electro-hardware-ms1025m01f21f-circuit-board-spacer-m4","provider":"Voomi Supply","version":"1.0","type":"link"}