CNC Machining Design Guide

Optimize your designs, reduce machining time, and lower your costs.

Essentials of Manufacturing

Information, coverage of important developments and expert commentary in manufacturing.

Injection Molding Design Guide

Guide for high quality and cost-effective plastic injection molding.

Metal 3D Printing Design Guide

Direct Metal Laser Sintering (DMLS) 3D printing for parts with reduced cost and little waste.

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The preferred metric screw thread is the Coarse Thread Pitch. If this is not suitable due to wall thickness and space considerations, the Fine Thread Pitch is available. 
 
Size (mm) Pitch (mm) Tap Drill (mm) Clearance Drill (mm)
 1.6  0.35  1.25  1.8
 2  0.4  1.60  2.4
 2.5  0.45  2.00  2.90
 3  0.5  2.50  3.40
 3.5  0.6  2.90  3.90
 4  0.7  3.30  4.50
 5  0.8  4.20  5.50
 6  1  5.00  6.60
 8  1.25  6.80  9.00
 10  1.5  8.50  12.00
 12  1.75  10.20  14.00
 14  2  12.00  16.00
 16  2  14.00  18.00
 20  2.5  17.50  22.00
 22  2.5  19.50  25.00
 24  3  21.00  27.00
 27  3  24.00  30.00
 30  3.5  26.50  33.00
 36  4  32.00  40.00
 42  4.5  37.50  46.00
 48  5  43.00  53.00
 56  5.5  50.50  62.00
 64  6  58.00  70.00
 72  6    
 80  6    
 90  6    
 100  6    
Glossary
CNC Machining Design Guide

Optimize your designs, reduce machining time, and lower your costs.

Essentials of Manufacturing

Information, coverage of important developments and expert commentary in manufacturing.

Injection Molding Design Guide

Guide for high quality and cost-effective plastic injection molding.

Metal 3D Printing Design Guide

Direct Metal Laser Sintering (DMLS) 3D printing for parts with reduced cost and little waste.