Technical Data:
Series: 149
Product type: Micrometer Head, Small Standard Type with Carbide-tipped Spindle
Feature: Carbide-tipped spindle provides high abrasion resistance
Spindle pitch: 0.5 mm / 0.025 in
Measuring face: Carbide tip
Measuring-face hardness: 90 HRA or more
Measuring face: Lapped
Finish: Satin-chrome plated
Measuring range: 0 - 0.5 in
Graduation: 0.001 in
Accuracy: +/-0.0001 in
Stem diameter: 0.375 in
Stem: With clamp nut
Spindle end: Flat (carbide tip)
Graduation features: Standard
Spindle lock: Yes
Made-to-order model: No

Dimensions:
Configuration: Stem locknut with spindle lock
Spindle Dia.=6.35 mm
Stem Dia.=9.5 mm, tolerance 0/-0.009 mm
Locknut outside Dia.=14 mm
Locknut thread=M9.5x0.5
Spindle-lock Dia.=15 mm
Body Dia.=15 mm
Reference dimensions=4 mm; 9.5 mm; 26.5 mm; 49 mm
Retracted reference dimensions=11.5 mm and 64 mm
Fixture thickness=6 mm
Set screw
Mass=60 g
Parenthetical dimensions apply with spindle fully retracted