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Hex Flange Screws [Table 8]（A394）

ASME B 18.2.1 - 2012

Display drawing:

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