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Material
Stainless steel 316
Diameter
US
1/4"
(52)
5/16"
(50)
3/8"
(53)
7/16"
(36)
1/2"
(62)
5/8"
(34)
3/4"
(34)
7/8"
(26)
1"
(21)
Thread density
Coarse
8
(21)
9
(26)
10
(34)
11
(34)
13
(42)
14
(21)
16
(36)
18
(34)
20
(71)
Fine
20
(71)
24
(33)
28
(16)
Length
US
3/8"
(1)
7/16"
(1)
1/2"
(7)
5/8"
(7)
3/4"
(10)
7/8"
(9)
1"
(12)
1-1/8"
(4)
1-1/4"
(12)
1-3/8"
(3)
1-1/2"
(13)
1-3/4"
(12)
1-7/8"
(1)
2"
(14)
2-1/4"
(9)
2-1/2"
(14)
2-3/4"
(9)
3"
(14)
3-1/4"
(8)
3-1/2"
(14)
3-3/4"
(8)
4"
(14)
4-1/4"
(4)
4-1/2"
(13)
4-3/4"
(2)
5"
(14)
5-1/2"
(13)
6"
(14)
6-1/2"
(7)
7"
(9)
7-1/2"
(5)
8"
(10)
8-1/2"
(6)
9"
(8)
9-1/2"
(3)
10"
(9)
10-1/2"
(3)
11"
(5)
11-1/2"
(3)
12"
(9)
13"
(2)
14"
(8)
16"
(8)
17"
(1)
18"
(8)
20"
(8)
Wrench size
7/16"
(52)
1/2"
(50)
9/16"
(53)
5/8"
(36)
3/4"
(62)
15/16"
(34)
1-1/8"
(34)
1-5/16"
(26)
1-1/2"
(21)
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Hex bolts
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Hex bolts
Hex bolts, Stainless steel 316
Hex bolt diameter is measured on the outside of the threads.
Resources
US Hex bolt sizes
(opens in new window/tab)
Head/Wrench size table
US thread per inch table
Diameter and Thread count
Coarse (standard) thread
1/4"-20
5/16"-18
3/8"-16
7/16"-14
1/2"-13
5/8"-11
3/4"-10
7/8"-9
1"-8
Fine thread
1/4"-28
5/16"-24
3/8"-24
7/16"-20
1/2"-20
See also
Metric hex bolts
A bolt with a six sided head.
