Monday, October18, 2021
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Hex bolts


American/United National Threads

Size Diameter TPI
Coarse
TPI
Fine
Root Dia.
Coarse
Hex
Head
Size
SAE
Washer
ID
SAE
Washer
OD
SAE
Washer
Thickness
#0 0.0600 - 80 0.0447        
#1 0.0730 64 72 0.0560        
#2 0.0860 56 64 0.0668   3/32" 1/4" 1/32"
#3 0.0990 48 56 0.0771        
#4 0.1120 40 48 0.0813   1/8" 5/16" 1/32"
#5 0.1250 40 44 0.0971        
#6 0.1380 32 40 0.1073 1/4" 5/32" 3/8" 3/64"
#8 0.1640 32 36 0.1299 1/4" 3/16" 7/16" 3/64"
#10 0.1900 24 32 0.1570 5/16" 7/32" 1/2" 1/16"
#12 0.2160 24 28 0.1722 5/16" 1/4" 9/16" 1/16"
1/4" 0.2500 20 28 0.1850 7/16" or 3/8" 9/32" 5/8" 1/16"
5/16" 0.3125 18 24 0.2400 1/2" 11/32" 11/16" 1/16"
3/8" 0.3750 16 24 0.2940 9/16" 13/32" 13/16" 1/16"
7/16" 0.4375 14 20 0.3440 5/8" 15/32" 15/16" 1/16"
1/2" 0.5000 13 20 0.4000 3/4" 17/32" 1-1/16" 3/32"
9/16" 0.5625 12 18 0.4540 7/8" 19/32" 1-3/16" 3/32"
5/8" 0.6250 11 18 0.5070 15/16" 21/32" 1-5/16" 3/32"
3/4" 0.7500 10 16 0.6200 1-1/8" 13/16" 1-1/2" 1/8"
7/8" 0.8750 9 14 0.7310 1-5/16" 15/16" 1-3/4" 1/8"
1" 1.0000 8 12 0.8370 1-1/2" 1-1/16" 1-3/4" 1/8"


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