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Hex Flange Screws [Table 8]（A394）

ASME B 18.2.1 - 2012

Display drawing:

Screw Thread 7/16 1/4 5/16 3/8 9/16 5/8 3/4 1/2
Thread Size 7/16 1/4 5/16 3/8 9/16 5/8 3/4 1/2
D 0.4375 0.25 0.3125 0.375 0.5625 0.625 0.75 0.5
PP UNC 14 20 18 16 12 11 10 13
PP UNF 20 28 24 24 18 18 16 20
Ds Max 0.4375 0.25 0.3125 0.378 0.5625 0.625 0.75 0.5
Ds Min 0.4305 0.245 0.3065 0.369 0.5545 0.617 0.741 0.493
S Max 0.625 0.375 0.5 0.5625 0.8125 0.9375 1.125 0.75
S Min 0.612 0.367 0.489 0.551 0.798 0.922 1.1 0.736
E Min 0.685 0.409 0.548 0.618 0.895 1.034 1.234 0.825
Dc Max 0.93 0.56 0.68 0.81 1.19 1.33 1.56 1.07
C Min 0.07 0.04 0.05 0.06 0.09 0.1 0.11 0.08
K Max 0.46 0.28 0.32 0.39 0.57 0.62 0.73 0.51
B L≤6 1.125 0.75 0.875 1 1.375 1.5 1.75 1.25
B L＞6 1.375 1 1.125 1.25 1.625 1.75 2 1.5
R Max 0.025 0.025 0.025 0.025 0.045 0.045 0.045 0.025
R Min 0.015 0.015 0.015 0.015 0.02 0.02 0.02 0.015