Screw Pitch S.I Metric
Number of Blades 30
Thread per mm 0.25 0.3, 0.35, 0.4, 0.45, 0.55, 0.65, 0.7, 0.75, 0.8, 0.85, 0.9, 1.0, 1.1, 1.2, 1.25, 1.3, 1.4, 1.5, 1.6, 1.7, 1.75, 1.8, 1.9, 2.0, 2.5, 3.0
Screw cutting gauge included - 60 Degrees

Accurately milled steel blades
Designed to check both internal and external thread forms
Marked with nominal size on each blade
All blades fixed in a steel sleeve
Screw cutting gauge included - 60 Degrees