ASME B 18.3 - 2003 (R2008) Hexagon Socket Button Head Cap Screws


Unit: inch
Screw Thread
d
0# 1# 2# 3# 4# 5# 6# 8# 10# 1/4 5/16 3/8 1/2 5/8
d Nominal Diameter
PP UNC
UNF
UNEF
dk max
min
k max
min
s Nominal Size
t min
L max
0.060 0.073 0.086 0.099 0.112 0.125 0.138 0.164 0.190 0.250 0.3125 0.375 0.500 0.625
- 64.0 56.0 48.0 40.0 40.0 32.0 32.0 24.0 20.0 18.0 16.0 13.0 11.0
80.0 72.0 64.0 56.0 48.0 44.0 40.0 36.0 32.0 28.0 24.0 24.0 20.0 18.0
- - - - - - - - - 32.0 32.0 32.0 28.0 24.0
0.114 0.139 0.164 0.188 0.213 0.238 0.262 0.312 0.361 0.437 0.547 0.656 0.875 1.000
0.104 0.129 0.154 0.176 0.201 0.226 0.250 0.298 0.347 0.419 0.527 0.636 0.851 0.970
0.032 0.039 0.046 0.052 0.059 0.066 0.073 0.087 0.101 0.132 0.166 0.199 0.265 0.331
0.026 0.033 0.038 0.044 0.051 0.058 0.063 0.077 0.091 0.122 0.152 0.185 0.245 0.311
0.035 0.050 0.050 0.062 0.062 0.078 0.078 0.094 0.125 0.156 0.188 0.219 0.312 0.375
0.020 0.028 0.028 0.035 0.035 0.044 0.044 0.052 0.070 0.087 0.105 0.122 0.175 0.210
0.50 0.50 0.50 0.50 0.50 0.50 0.63 0.75 1.00 1.00 1.00 1.25 2.00 2.00
Alternative history
Fastener Expo Suppliers
1
Kerr Lakeside, Inc. America Kerr Lakeside, Inc.
Tel:(800) 487-5377/(216) 261-2100
Fax:(216) 261-9798
Contact us via Email
2
Fit Fasteners LLC. America Fit Fasteners LLC.
Tel:+1 888 8801688
Contact us via Email
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