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Reference Tables -- Socket Head Cap Screws Dimensions

 

 

Socket Head Cap Screw Sizes
Screw Size Decimal
Equiv.
(Inches)
Hex Key Size (Inches) Head Height (Inches) Head Diameter (Inches)
No. 0
0.060 0.05 0.060 0.096
No. 1
0.073 1/16 0.073 0.118
No. 2
0.086 5/64 0.086 0.140
No. 3
0.099 5/64 0.099 0.161
No. 4
0.112 3/32 0.112 0.183
No. 5
0.125 3/32 0.125 0.205
No. 6
0.138 7/64 0.138 0.226
No. 8
0.164 9/64 0.164 0.270
No. 10
0.190 5/32 0.190 0.312
No. 12
0.216 ??? 0.216 ???
1/4" 0.250 3/16 1/4 3/8
5/16" 0.313 1/4 5/16 15/32
3/8" 0.375 5/16 3/8 9/16
7/16" 0.438 3/8 7/16 21/32
1/2" 0.500 3/8 1/2 3/4
5/8" 0.625 1/2 5/8 15/16
3/4" 0.750 5/8 3/4 1 1/8
7/8" 0.875 3/4 7/8 1 5/16
1" 1.000 3/4 1 1 1/2
1 1/8" 1.125 7/8 1 1/8 1 11/16



 

 

 

 

 


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