Knurling Information

General Knurling Information

Speeds & Feeds for Knurling

Knurling Tips

Diamond Knurling

Metric / Inch Conversions

Blank Diameter Selection

Diametral Pitch Knurling & Conversions

Determining Centerline with Straddle Holders

Special Knurling Dies

Approx. Increase in Knurled Diameter

Surface Speed to RPM Conversions

Numbers of Teeth on Stock Knurls

The Problem of Straight Form Knurling in a 2 Die Straddle Holder

Articles:

Convex Knurls Speed Rotor-Shaft Production for Power-System Manufacturer

When to Roll Form, When to Cut 

Tips to Upgrade Knurling Practices


Metric / Inch Conversions


From To Formula
TPI Metric 25.4 / TPI = Metric Pitch
Metric TPI 25.4 / Metric Pitch = TPI
Inches mm Inches x 25.4 = mm
mm Inches mm / 25.4 = Inches

 

Standard Pitch TPI Equivalent
0.3 mm 84.7
0.4 mm 63.5
0.5 mm 50.8
0.6 mm 42.3
0.7 mm 36.3
0.8 mm 31.8
0.9 mm 28.2
1.0 mm 25.4
1.2 mm 21.2
1.4 mm 18.1
1.5 mm 16.9
1.6 mm 15.9
2.0 mm 12.7
3.0 mm 8.5