{"product_id":"starrett-50731-screw-thread-micrometer-0-0-875-in","title":"Starrett 50731 Screw Thread Micrometer 0-0.875 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe STARRETT 50731 is a mechanical screw thread micrometer designed for direct measurement of screw thread pitch diameters. It features a point-style anvil and a plain thimble, allowing contact at the thread flanks for accurate thread form measurement. The micrometer reads from 0 to 0.875 inches with a graduation of 0.001 inches and an accuracy of 0.0002 inches (0.004 mm). The spindle and anvil are steel construction with a satin chrome finish that resists corrosion and reduces glare during use. A case and wrench are included. This tool is used by machinists, toolroom technicians, and quality control professionals who require precise thread measurement at the bench or on the shop floor.\u003c\/p\u003e\n\u003cp\u003eThe 50731 is suited for measuring external screw thread pitch diameters in manufacturing, inspection, and toolroom environments. Its 0 to 0.875 inch range covers a wide variety of common fastener and threaded component sizes. The mechanical operation requires no batteries and provides reliable readings in shop conditions where electronic instruments may be less practical. This micrometer is appropriate for both production inspection and one-off verification tasks.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e0 to 0.875 inch measurement range for external thread pitch diameter\u003c\/li\u003e\n  \u003cli\u003ePoint-style anvil contacts thread flanks directly for accurate pitch diameter readings\u003c\/li\u003e\n  \u003cli\u003e0.001 inch graduation with 0.0002 inch accuracy (0.004 mm)\u003c\/li\u003e\n  \u003cli\u003ePlain thimble with satin chrome finish for durability and low glare\u003c\/li\u003e\n  \u003cli\u003eSteel spindle and anvil construction for long service life\u003c\/li\u003e\n  \u003cli\u003eIncludes protective case and wrench for field and bench use\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style precision measurement tool for external screw thread inspection across standard threaded fasteners and components within the 0 to 0.875 inch pitch diameter range.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis instrument is used by machinists and quality technicians and does not require installation in a system. Before use, verify the micrometer is zeroed properly using the included wrench and reference standards appropriate to the thread form being measured. Store in the included case when not in use to protect the anvil points and spindle from damage.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMinimum Measurement\u003c\/strong\u003e: 0.0000 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Measurement\u003c\/strong\u003e: 0.875 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGraduation\u003c\/strong\u003e: 0.001 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAccuracy (Inch)\u003c\/strong\u003e: 0.0002 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAccuracy (mm)\u003c\/strong\u003e: 0.004 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperation Type\u003c\/strong\u003e: Mechanical\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAnvil Type\u003c\/strong\u003e: Point\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThimble Type\u003c\/strong\u003e: Plain\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpindle Diameter\u003c\/strong\u003e: 0.25 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAnvil Material\u003c\/strong\u003e: Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpindle Material\u003c\/strong\u003e: Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Satin Chrome\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIncludes\u003c\/strong\u003e: Case, Wrench\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.438 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: California Proposition 65\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 41111601\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: STARRETT\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 50731\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"STARRETT","offers":[{"title":"Default Title","offer_id":51542964175154,"sku":"50731","price":286.85,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/2ac88a5ffec844ed58f6e66a38389471.jpg?v=1785912414","url":"https:\/\/voomisupply.com\/products\/starrett-50731-screw-thread-micrometer-0-0-875-in","provider":"Voomi Supply","version":"1.0","type":"link"}