Tooling, Machines & Engineering Services
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ANSI STANDARD B18.6.3 MACHINE SCREW
ANSI STANDARD B18.6.4 TAPPING SCREW
BRITISH STANDARD
SIZE
PUNCH DIA"
PHILIPS
USA PZ
PZ
2
7/16
3P10-13
3
3P10-61
4
3P10-17
5
3P10-18
6
9/16
3P20-63
7
3P20-71
8
3P20-33
9
7/8
3P20-64
10
3P20-34
12
3P30-24
14
3P30-25
1/4"
5/16"
1
3P40-20
3/8"
1 1/4
3P40-21
3P40-22
1/2
1 1/2
3P40-31
NOT APPLICABLE