Square Bolt (8 UN series)

Standard ANSI B18.2.1
Description Square Bolt (8 UN series) 1/4x8x0.75 - ANSI B18.2.1
Part number ANSI B18.2.1 - SB - 8 UN - NS 1/4 x L 0.75
Product selection
Selector Nominal Ø (in.) Threads per inch Thread length (in.)
1 1/4 8 0.75
2 5/16 8 0.875
3 3/8 8 1
4 7/16 8 1.125
5 1/2 8 1.25
6 5/8 8 1.5
7 3/4 8 1.75
8 7/8 8 2
9 1 8 2.25
10 1 1/8 8 2.5
11 1 1/4 8 2.75
12 1 3/8 8 3
13 1 1/2 8 3.25
Nominal Ø (in.)
Threads per inch
Thread length (in.)
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