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DIN 371
PM
UNF ANSI B1.1 DIN 374

H350-3 H450-3

H

H350-3

H450-3

UNF

2B 2B

Ø” d P d 1 l l l d a ID ID
2
1
2
3
1
UNF TPI mm mm mm mm mm mm  
10 32 4.82 70 9.0 25 6.0 4.9 3 4.05 101265
1/4 28 6.35 80 11.0 30 7.0 5.5 3 5.50 101264
5/16 24 7.93 90 12.5 35 8.0 6.2 3 6.90 101267
3/8 24 9.52 100 14.0 39 10.0 8.0 3 8.50 101266
7/16 20 11.11 100 14.0 8.0 6.2 3 9.80 101334
1/2 20 12.70 100 14.0 9.0 7.0 4 11.40 101331
5/8 18 15.87 100 14.0 12.0 9.0 4 14.50 101333
3/4 16 19.05 125 18.0 14.0 11.0 4 17.50 101332

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THREADING
TECHNOLOGY