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Hex Flange Screws [Table 8](A394)

ASME B 18.2.1 - 2012

Display drawing:

Screw Thread 1/4
Thread Size 1/4
D 0.25
PP UNC 20
PP UNF 28
Ds Max 0.25
Ds Min 0.245
S Max 0.375
S Min 0.367
E Min 0.409
Dc Max 0.56
C Min 0.04
K Max 0.28
B L≤6 0.75
B L>6 1
R Max 0.025
R Min 0.015