{"product_id":"mitutoyo-148-502-mechanical-micrometer-head-0-5-in","title":"Mitutoyo 148-502 Mechanical Micrometer Head 0.5 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe MITUTOYO 148-502 is a mechanical micrometer head designed for precise linear measurement and positioning in machine tool, fixture, and instrumentation applications. It provides a 0.5-inch measurement range with an accuracy of 0.0001 inch, making it suitable for high-precision setups. The head features a zero-adjustable thimble that allows technicians to set zero at any position by loosening the set screw in the thimble, eliminating the need to reset a reference datum. The rotating flat spindle measures 0.1969 inches in diameter and 13 mm in length, finished in chrome for durability. At 2.8 inches in overall length and weighing 0.5 pounds, it integrates cleanly into bench fixtures and precision assemblies.\u003c\/p\u003e\n\u003cp\u003eThis micrometer head is used in precision machining, metrology lab setups, fixture building, and mechanical positioning applications where repeatable, fine-increment adjustment is required. It is suited for integration into custom jigs, measuring fixtures, and machine slide assemblies in both production and toolroom environments. The SKS3 hardened steel measuring face provides wear resistance under repeated contact. A clamp nut is supplied, and the unit ships in a paper case. It is installed by machinists, metrologists, and precision instrument technicians.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eZero-adjustable thimble: set zero at any position by loosening the set screw in the thimble\u003c\/li\u003e\n  \u003cli\u003eAccuracy to 0.0001 inch with 0.01-inch graduation\u003c\/li\u003e\n  \u003cli\u003eRotating flat spindle, 0.1969 inches in diameter and 13 mm in length\u003c\/li\u003e\n  \u003cli\u003eSKS3 hardened steel measuring face for wear resistance\u003c\/li\u003e\n  \u003cli\u003eChrome finish on spindle and body\u003c\/li\u003e\n  \u003cli\u003eClamp nut included; stem diameter 0.375 inches, stem length 9.5 mm\u003c\/li\u003e\n  \u003cli\u003eNo digital counter — purely mechanical operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or upgrade micrometer head for precision fixtures, machine tool slides, and instrumentation assemblies requiring a 0.5-inch range mechanical head with a 0.375-inch diameter stem mounting.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is typically performed by machinists or precision instrument technicians. Before installing or removing the head from a fixture, ensure the machine or assembly is powered down and all motion is arrested. Mount the stem securely using the supplied clamp nut to the specified bore; do not overtighten the clamp nut, as this may distort the stem and affect spindle alignment. Verify zero setting after mounting by loosening the set screw in the thimble and rotating to the desired datum before re-tightening.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMeasurement Range\u003c\/strong\u003e: 0.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAccuracy\u003c\/strong\u003e: 0.0001 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGraduation\u003c\/strong\u003e: 0.01 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThimble Type\u003c\/strong\u003e: Zero-Adjustable\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThimble Diameter\u003c\/strong\u003e: 0.5118 inches (13 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpindle Shape\u003c\/strong\u003e: Flat (Rotating)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpindle Diameter\u003c\/strong\u003e: 0.1969 inches (5 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpindle Length\u003c\/strong\u003e: 13 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStem Diameter\u003c\/strong\u003e: 0.375 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStem Length\u003c\/strong\u003e: 9.5 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMeasuring Face Material\u003c\/strong\u003e: SKS3 hardened steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Chrome\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDigital Counter\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClamp Nut Supplied\u003c\/strong\u003e: Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.5 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 148\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: MITUTOYO\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 148-502\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MITUTOYO","offers":[{"title":"Default Title","offer_id":51557999870258,"sku":"148-502","price":100.27,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/0abec827f0890d57057938f0f5ee6e1a.jpg?v=1786400517","url":"https:\/\/voomisupply.com\/products\/mitutoyo-148-502-mechanical-micrometer-head-0-5-in","provider":"Voomi Supply","version":"1.0","type":"link"}