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ANSI STANDARD B18.6.3 MACHINE SCREW
ANSI STANDARD B18.6.4 TAPPING SCREW
BRITISH STANDARD
SIZE
PUNCH DIA"
PHILIPS
PZ USA
PZ
2
7/16
3P10-63
3PZ10-63
3
3P10-64
3PZ10-64
4
3P10-62
3PZ10-62
5
9/16
3P20-144
3PZ20-144
6
3P20-133
3PZ20-133
8
3P20-145
3PZ20-145
10
3P20-143
3PZ20-143
12
7/8
3P30-96
3PZ30-96
1/4
3P30-97
3PZ30-97
5/16
1
3P40-107
3PZ40-107
3/8
3P40-108
3PZ40-108