General Information
Pro-Twist™ Nominal Size Chart
Screw Size
Nominal Size Basic Screw Diameter Actual Size
0 0.0600
1 0.0730
2 0.860
3 0.0990
4 0.1120
5 .01250
6 0.1380
7 0.1510
8 0.1640
10 0.1900
12 0.2160
1/4 0.2500
5/16 0.3125
3/8 .03750
Copyright 2002, PrimeSource Building Products Inc.
©2005 PrimeSource Building Products, Inc.