Mechanical Micrometer Head, Ultra-Small, 6mm Diameter Plain Stem, Spherical (SR3) Spindle Face 0-6.5mm, 0.01mm, Miniature micrometer heads for ease of incorporating into machines. Scale surface has hard-chrome plating FULL SPECIFICATIONS Part 1 ACCURACY MM+/-5?m ACCURACY MM?5?m CATEGORY IDPrecision Measuring Tools MITUTOYO CATALOG PAGE NUMBERB-60 CLAMP NUTN CONTACT POINT DIAMETER MM3.5mm GROUP IDMicrometer Heads INDIVIDUAL OR SETIndividual MECHANICAL OR DIGITALMechanical PRIMARY MEASURING RANGE LOWER MM0 PRIMARY MEASURING RANGE UPPER MM6.5mm Product TypeMicrometer Heads RANGE0 - 6.5mm RESOLUTION OR GRADUATION MM.01mm SHIPPING HEIGHT INCH1 SHIPPING LENGTH INCH1.5 STEM DIAMETER6mm SHIPPING WEIGHT LBS0.1 SHIPPING WIDTH INCH1.5 THIMBLE DIAMETER9.3mm US Harmonized Tariff Schedule9017.30.4000