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Fastener Info
Fastener Info
General Fastener Info
Type-Specific Information
Measuring Fasteners
Materials and Grades
Printable Fastener Tools
US Nut Size Table
Print this page
Size
Diameter*
Height
Hex Nut
Machine Screw Nut
Hex Nut
Jam Nut
Nylock Nut
Machine Screw Nut
#0
-
5/32"
-
-
-
3/64"
#1
-
5/32"
-
-
-
3/64"
#2
-
3/16"
-
-
9/64"
1/16"
#3
-
3/16"
-
-
9/64"
1/16"
#4
-
1/4"
-
-
9/64"
3/32"
#6
-
5/16"
-
-
11/64"
7/64"
#8
-
11/32"
-
-
15/64"
1/8"
#10
-
3/8"
-
-
15/64"
1/8"
#12
-
7/16"
-
-
5/16"
5/32"
1/4"
7/16"
7/16"
7/32"
5/32"
5/16"
3/16"
5/16"
1/2"
9/16"
17/64"
3/16"
11/32"
7/32"
3/8"
9/16"
5/8"
21/64"
7/32"
29/64"
1/4"
7/16"
11/16"
-
3/8"
1/4"
29/64"
-
1/2"
3/4"
-
7/16"
5/16"
19/32"
-
9/16"
7/8"
-
31/64"
5/16"
41/64"
-
5/8"
15/16"
-
35/64"
3/8"
3/4"
-
3/4"
1-1/8"
-
41/64"
27/64"
7/8"
-
7/8"
1-5/16"
-
3/4"
31/64"
63/64"
-
1"
1-1/2"
-
55/64"
35/64"
1-3/64"
-
*
This is the diameter across the flats. It is also the size of wrench to use.
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