Previous_Page
Clear filters

Hex Flange Screws

ASME B 18.2.1 - 2010

Display drawing:

Screw Thread 3/8 7/16 9/16 5/8 1/4 5/16 3/4 1/2
Thread Size 3/8 7/16 9/16 5/8 1/4 5/16 3/4 1/2
D 0.375 0.4375 0.5625 0.625 0.25 0.3125 0.75 0.5
PP UNC 16 14 12 11 20 18 10 13
PP UNF 24 20 18 18 28 24 16 20
Ds Max 0.375 0.4375 0.5625 0.625 0.25 0.3125 0.75 0.5
Ds Min 0.369 0.4305 0.5545 0.617 0.245 0.3065 0.741 0.493
S Basic 9/16 5/8 13/16 15/16 3/8 1/2 1-1/8 3/4
S Max 0.5625 0.625 0.8125 0.9375 0.375 0.5 1.125 0.75
S Min 0.551 0.612 0.798 0.922 0.367 0.489 1.1 0.736
E Max 0.65 0.722 0.938 1.083 0.433 0.577 1.299 0.866
E Min 0.618 0.685 0.895 1.034 0.409 0.548 1.234 0.825
Dc Max 0.81 0.93 1.19 1.33 0.56 0.68 1.59 1.07
C Min 0.06 0.07 0.09 0.1 0.04 0.05 0.11 0.08
K Max 0.39 0.46 0.57 0.62 0.28 0.32 0.73 0.51
B L≤6 1 1.125 1.375 1.5 0.75 0.875 1.75 1.25
B L＞6 1.25 1.375 1.625 1.75 1 1.125 2 1.5
R Max 0.025 0.025 0.045 0.045 0.025 0.025 0.045 0.025
R Min 0.025 0.025 0.020 0.020 0.015 0.025 0.020 0.025