B-99BMitutoyo reserves the right to change any or all aspects of any product specication, including prices, designs and service content, without notice.SPECIFICATIONSMetricOrder No.Range (mm)Graduation (mm)Stem dia. (mm)StemSpindle endSpindle pitch (mm)Maximum permissible error JMPE (µm)148-1320 - 130.019.5PlainSpherical (SR4)0.25±2148-133W/clamp nut148-3220 - 6.5Plain148-323W/clamp nutMicrometer HeadThe origin of Mitutoyo’s trustworthy brand of small tool instruments Micrometer HeadsSERIES 148 — Fine Spindle Feed of 0.25 mm/rev• Micrometer head with 0.25 mm spindle pitch is convenient for ne-feed and ne-positioning applications.Unit: mmPlain StemStem LocknutDIMENSIONSSpherical faceStem locknutSpherical faceSpherical faceStem locknutSpherical facePlain stemPlain stem148-132Mass: 30 g 0520148-1329.5(14)27(44.5)31.5 3.5ø5SR4ø9.5Set screwø130-0.009• Fixture thickness: 6 mm148-133 Mass: 35 g 0520148-1339.5(14)27(44.5)31.5 3.5ø5ø14SR4ø9.5Set screwø130-0.0094M9.5×0.5Locknut148-322Mass: 30 g 23.59.5SR4ø9.5Set screw0-0.009ø6.35ø15(12)18.5(30)• Fixture thickness: 6 mm148-323Mass: 35 g 23.59.5SR4ø9.5Set screw0-0.009ø15(12)18.5(30)4ø14ø6.35LocknutM9.5×0.5( ): with spindle fully retracted. Technical Data• Measuring face Material: Alloy tool steel Hardness: 60 HRC or more Lapped• Scale nishing: Satin-chrome plated

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