Library › Hardware › Hex bolts, inch: 1/4-20 to 3/4-10

1/4-20 × 1 in hex bolt

1/4-20 × 1 in hex bolt: 0.4375 in AF, head 0.1562 in

Exact dimensions. True size, no printing tolerance added. Threads are plain cylinders at the major diameter.

STEP STL free, CC BY 4.0 (credit "Xem Studio")

Dimensions

thread	1/4-20
tpi	20
af_in	0.4375
head_h_in	0.1562
lengths_in	0.5, 0.75, 1, 1.25, 1.5, 2, 2.5, 3

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From the full sheet

Hex bolts, inch: 1/4-20 to 3/4-10 (ASME B18.2.1): every size, notes, mating features and sources. What wrench fits a 3/8-16 hex bolt?

Other sizes

1/4-20 × 0.5 in hex bolt
1/4-20 × 0.75 in hex bolt
1/4-20 × 1.25 in hex bolt
1/4-20 × 1.5 in hex bolt
1/4-20 × 2 in hex bolt
1/4-20 × 2.5 in hex bolt
1/4-20 × 3 in hex bolt
5/16-18 × 0.75 in hex bolt
5/16-18 × 1 in hex bolt
5/16-18 × 1.25 in hex bolt
5/16-18 × 1.5 in hex bolt
5/16-18 × 2 in hex bolt
5/16-18 × 2.5 in hex bolt
5/16-18 × 3 in hex bolt
3/8-16 × 0.75 in hex bolt
3/8-16 × 1 in hex bolt
3/8-16 × 1.25 in hex bolt
3/8-16 × 1.5 in hex bolt
3/8-16 × 2 in hex bolt
3/8-16 × 2.5 in hex bolt
3/8-16 × 3 in hex bolt
3/8-16 × 4 in hex bolt
7/16-14 × 1 in hex bolt
7/16-14 × 1.5 in hex bolt
7/16-14 × 2 in hex bolt
7/16-14 × 3 in hex bolt
1/2-13 × 1 in hex bolt
1/2-13 × 1.25 in hex bolt
1/2-13 × 1.5 in hex bolt
1/2-13 × 2 in hex bolt
1/2-13 × 2.5 in hex bolt
1/2-13 × 3 in hex bolt
1/2-13 × 4 in hex bolt
1/2-13 × 5 in hex bolt
1/2-13 × 6 in hex bolt
5/8-11 × 1.5 in hex bolt
5/8-11 × 2 in hex bolt
5/8-11 × 3 in hex bolt
5/8-11 × 4 in hex bolt
5/8-11 × 5 in hex bolt
5/8-11 × 6 in hex bolt
3/4-10 × 2 in hex bolt
3/4-10 × 3 in hex bolt
3/4-10 × 4 in hex bolt
3/4-10 × 5 in hex bolt
3/4-10 × 6 in hex bolt