Library › Hardware › Hex bolts, inch: 1/4-20 to 3/4-10
5/16-18 × 2.5 in hex bolt
5/16-18 × 2.5 in hex bolt: 0.5 in AF, head 0.2031 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 | 5/16-18 |
|---|---|
| tpi | 18 |
| af_in | 0.5 |
| head_h_in | 0.2031 |
| lengths_in | 0.75, 1, 1.25, 1.5, 2, 2.5, 3 |
Let your AI pull this. Add
Set it up →https://xemstudio.com/mcp to Claude, ChatGPT, Cursor or any MCP client (free, no account, one minute) and it can look up exact sizes, mating fits and free STEP/STL from every chat.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 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 × 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