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US
Material
Zinc plated steel
(22)
Grade
Grade 8
Diameter
US (fractional)
1/4"
(2)
5/16"
(2)
3/8"
(2)
7/16"
(2)
1/2"
(3)
9/16"
(2)
5/8"
(4)
3/4"
(4)
7/8"
(2)
1"
(2)
1-1/8"
(1)
1-1/4"
(1)
1-1/2"
(1)
Thread count/pitch
US
6
(1)
7
(2)
8
(1)
9
(1)
10
(2)
11
(2)
12
(1)
13
(2)
14
(3)
16
(3)
18
(4)
20
(3)
24
(2)
28
(1)
Length
3-1/2"
Drive type
External hex
Head style
Hex
(23)
Hex flange
(5)
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Grade 8
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3-1/2"
External hex
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Grade 8 steel, US, 3-1/2", External hex
US Fasteners
Hex bolts
Bolts with hexagonal heads and machine threads for use with a nut or in a tapped hole. Also known as hex cap screws or machine bolts.
Flange bolts
Flange bolts have a flange on the bottom of the head that distributes the load like a washer.
Bolts with hexagonal heads and machine threads for use with a nut or in a tapped hole. Also known as hex cap screws or machine bolts.
Flange bolts have a flange on the bottom of the head that distributes the load like a washer.