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Construction Fasteners
General Information
Technical Information
General Information
Head Styles and Drive Types
Nominal Size Chart
Threads Per Inch Chart
Fastener Terminology
Fastener Jargon
Threads and Points
Gauge to Inch Chart
Fastener Selection
Construction Terminology
Pro-Twist™ Threads Per Inch
Thread Types with Diameter and Thread Pitch
Tapping Screws
Machine Screws
Type “A” and Type 17 Screws
Type “AB” and “B”
UNC – Coarse Thread
UNF – Fine Thread
0-40
0-48
N/A
0-808
1-32
1-42
1-64
1-72
2-32
2-32
2-56
2-64
3-28
3-28
3-48
3-56
4-24
4-24
4-40
4-48
5-20
5-20
5-40
5-44
6-18
6-20
6-32
6-40
7-16
7-19
8-32
8-36
8-15
8-18
10-24
10-32
10-12
10-16
12-24
12-28
12-11
12-14
1/4-20
1/4-28
14-10
1/4-14
5/16-18
5/16-24
5/16-12
3/8-16
3/8-24
3/8-12
7/16-14
7/16-20
7/16-10
1/2-13
1/2-20
1/2-10
9/16-12
9/16-18
5/8-11
5/8-18
3/4-10
3/4-16
7/8-9
7/8-14
Copyright 2002, PrimeSource Building Products Inc.
©2005 PrimeSource Building Products, Inc.
