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Fastener Info
Fastener Info
General Fastener Info
Type-Specific Information
Measuring Fasteners
Materials and Grades
Printable Fastener Tools
Drive Sizes for US Allen Drive Screws
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Screw Diameter
Drive Size
Socket Flat
Socket Button
Socket Cap
Set Screw
#0
0.89mm (0.035")
0.89mm (0.035")
1.27mm (0.050")
0.71mm (0.028")
#1
1.27mm (0.050")
1.27mm (0.050")
1/16"
0.89mm (0.035")
#2
1.27mm (0.050")
1.27mm (0.050")
5/64"
0.89mm (0.035")
#3
1/16"
1/16"
5/64"
1.27mm (0.050")
#4
1/16"
1/16"
3/32"
1.27mm (0.050")
#5
5/64"
5/64"
3/32"
1/16"
#6
5/64"
5/64"
7/64"
1/16"
#8
3/32"
3/32"
9/64"
5/64"
#10
1/8"
1/8"
5/32"
3/32"
#12
1/8"
*
5/32"
3/32"
1/4"
5/32"
5/32"
3/16"
1/8"
5/16"
3/16"
3/16"
1/4"
5/32"
3/8"
7/32"
7/32"
5/16"
3/16"
7/16"
1/4"
1/4"
3/8"
7/32"
1/2"
5/16"
5/16"
3/8"
1/4"
9/16"
*
*
7/16"
1/4"
5/8"
3/8"
3/8"
1/2"
5/16"
3/4"
1/2"
7/16"
5/8"
3/8"
7/8"
9/16"
3/4"
1/2"
1"
5/8"
3/4"
9/16"
1-1/8"
3/4"
7/8"
1-1/4"
7/8"
7/8"
1-3/8"
7/8"
1"
1-1/2"
1"
1"
* This product is not manufactured, or does not have a standardized drive size.