Xem Studiomeasured geometryLibrary › Hardware › Fasteners ·
Hex bolts, inch: 1/4-20 to 3/4-10 (ASME B18.2.1)
What wrench fits a 3/8-16 hex bolt? · Standard part · basis: ASME B18.2.1 hex bolt / cap screw: width across flats F, head height H (nominal)
Exact dimensions. True size, with no printing tolerance added.
- sizes
- 7 in table
Notes
- Threads are plain cylinders at the major diameter, as every thread on this site.
- Length is under the head.
Sizes
| thread | tpi | af_in | head_h_in | lengths_in |
|---|---|---|---|---|
| 1/4-20 | 20 | 0.4375 | 0.1562 | 0.5, 0.75, 1, 1.25, 1.5, 2, 2.5, 3 |
| 5/16-18 | 18 | 0.5 | 0.2031 | 0.75, 1, 1.25, 1.5, 2, 2.5, 3 |
| 3/8-16 | 16 | 0.5625 | 0.2344 | 0.75, 1, 1.25, 1.5, 2, 2.5, 3, 4 |
| 7/16-14 | 14 | 0.625 | 0.2812 | 1, 1.5, 2, 3 |
| 1/2-13 | 13 | 0.75 | 0.3438 | 1, 1.25, 1.5, 2, 2.5, 3, 4, 5, 6 |
| 5/8-11 | 11 | 0.9375 | 0.4219 | 1.5, 2, 3, 4, 5, 6 |
| 3/4-10 | 10 | 1.125 | 0.5 | 2, 3, 4, 5, 6 |
Where the files are
Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.
| ASME | ASME B18.2.1 Square, hex, heavy hex and askew head bolts and hex, heavy hex, hex flange, lobed head and lag screws (inch) | standard | ASME; dimensions are facts verify |
Free files
★ Free files 47 parts. Generated by Xem Studio from the standard; threads are plain cylinders at major diameter. CC BY 4.0. index.json
| hex-bolt-1-4-20x0.5in | 1/4-20 × 0.5 in hex bolt: 0.4375 in AF, head 0.1562 in | STEP · STL |
| hex-bolt-1-4-20x0.75in | 1/4-20 × 0.75 in hex bolt: 0.4375 in AF, head 0.1562 in | STEP · STL |
| hex-bolt-1-4-20x1in | 1/4-20 × 1 in hex bolt: 0.4375 in AF, head 0.1562 in | STEP · STL |
| hex-bolt-1-4-20x1.25in | 1/4-20 × 1.25 in hex bolt: 0.4375 in AF, head 0.1562 in | STEP · STL |
| hex-bolt-1-4-20x1.5in | 1/4-20 × 1.5 in hex bolt: 0.4375 in AF, head 0.1562 in | STEP · STL |
| hex-bolt-1-4-20x2in | 1/4-20 × 2 in hex bolt: 0.4375 in AF, head 0.1562 in | STEP · STL |
| hex-bolt-1-4-20x2.5in | 1/4-20 × 2.5 in hex bolt: 0.4375 in AF, head 0.1562 in | STEP · STL |
| hex-bolt-1-4-20x3in | 1/4-20 × 3 in hex bolt: 0.4375 in AF, head 0.1562 in | STEP · STL |
| hex-bolt-5-16-18x0.75in | 5/16-18 × 0.75 in hex bolt: 0.5 in AF, head 0.2031 in | STEP · STL |
| hex-bolt-5-16-18x1in | 5/16-18 × 1 in hex bolt: 0.5 in AF, head 0.2031 in | STEP · STL |
| hex-bolt-5-16-18x1.25in | 5/16-18 × 1.25 in hex bolt: 0.5 in AF, head 0.2031 in | STEP · STL |
| hex-bolt-5-16-18x1.5in | 5/16-18 × 1.5 in hex bolt: 0.5 in AF, head 0.2031 in | STEP · STL |
| hex-bolt-5-16-18x2in | 5/16-18 × 2 in hex bolt: 0.5 in AF, head 0.2031 in | STEP · STL |
| hex-bolt-5-16-18x2.5in | 5/16-18 × 2.5 in hex bolt: 0.5 in AF, head 0.2031 in | STEP · STL |
| hex-bolt-5-16-18x3in | 5/16-18 × 3 in hex bolt: 0.5 in AF, head 0.2031 in | STEP · STL |
| hex-bolt-3-8-16x0.75in | 3/8-16 × 0.75 in hex bolt: 0.5625 in AF, head 0.2344 in | STEP · STL |
| hex-bolt-3-8-16x1in | 3/8-16 × 1 in hex bolt: 0.5625 in AF, head 0.2344 in | STEP · STL |
| hex-bolt-3-8-16x1.25in | 3/8-16 × 1.25 in hex bolt: 0.5625 in AF, head 0.2344 in | STEP · STL |
| hex-bolt-3-8-16x1.5in | 3/8-16 × 1.5 in hex bolt: 0.5625 in AF, head 0.2344 in | STEP · STL |
| hex-bolt-3-8-16x2in | 3/8-16 × 2 in hex bolt: 0.5625 in AF, head 0.2344 in | STEP · STL |
| hex-bolt-3-8-16x2.5in | 3/8-16 × 2.5 in hex bolt: 0.5625 in AF, head 0.2344 in | STEP · STL |
| hex-bolt-3-8-16x3in | 3/8-16 × 3 in hex bolt: 0.5625 in AF, head 0.2344 in | STEP · STL |
| hex-bolt-3-8-16x4in | 3/8-16 × 4 in hex bolt: 0.5625 in AF, head 0.2344 in | STEP · STL |
| hex-bolt-7-16-14x1in | 7/16-14 × 1 in hex bolt: 0.625 in AF, head 0.2812 in | STEP · STL |
| hex-bolt-7-16-14x1.5in | 7/16-14 × 1.5 in hex bolt: 0.625 in AF, head 0.2812 in | STEP · STL |
| hex-bolt-7-16-14x2in | 7/16-14 × 2 in hex bolt: 0.625 in AF, head 0.2812 in | STEP · STL |
| hex-bolt-7-16-14x3in | 7/16-14 × 3 in hex bolt: 0.625 in AF, head 0.2812 in | STEP · STL |
| hex-bolt-1-2-13x1in | 1/2-13 × 1 in hex bolt: 0.75 in AF, head 0.3438 in | STEP · STL |
| hex-bolt-1-2-13x1.25in | 1/2-13 × 1.25 in hex bolt: 0.75 in AF, head 0.3438 in | STEP · STL |
| hex-bolt-1-2-13x1.5in | 1/2-13 × 1.5 in hex bolt: 0.75 in AF, head 0.3438 in | STEP · STL |
| hex-bolt-1-2-13x2in | 1/2-13 × 2 in hex bolt: 0.75 in AF, head 0.3438 in | STEP · STL |
| hex-bolt-1-2-13x2.5in | 1/2-13 × 2.5 in hex bolt: 0.75 in AF, head 0.3438 in | STEP · STL |
| hex-bolt-1-2-13x3in | 1/2-13 × 3 in hex bolt: 0.75 in AF, head 0.3438 in | STEP · STL |
| hex-bolt-1-2-13x4in | 1/2-13 × 4 in hex bolt: 0.75 in AF, head 0.3438 in | STEP · STL |
| hex-bolt-1-2-13x5in | 1/2-13 × 5 in hex bolt: 0.75 in AF, head 0.3438 in | STEP · STL |
| hex-bolt-1-2-13x6in | 1/2-13 × 6 in hex bolt: 0.75 in AF, head 0.3438 in | STEP · STL |
| hex-bolt-5-8-11x1.5in | 5/8-11 × 1.5 in hex bolt: 0.9375 in AF, head 0.4219 in | STEP · STL |
| hex-bolt-5-8-11x2in | 5/8-11 × 2 in hex bolt: 0.9375 in AF, head 0.4219 in | STEP · STL |
| hex-bolt-5-8-11x3in | 5/8-11 × 3 in hex bolt: 0.9375 in AF, head 0.4219 in | STEP · STL |
| hex-bolt-5-8-11x4in | 5/8-11 × 4 in hex bolt: 0.9375 in AF, head 0.4219 in | STEP · STL |
| hex-bolt-5-8-11x5in | 5/8-11 × 5 in hex bolt: 0.9375 in AF, head 0.4219 in | STEP · STL |
| hex-bolt-5-8-11x6in | 5/8-11 × 6 in hex bolt: 0.9375 in AF, head 0.4219 in | STEP · STL |
| hex-bolt-3-4-10x2in | 3/4-10 × 2 in hex bolt: 1.125 in AF, head 0.5 in | STEP · STL |
| hex-bolt-3-4-10x3in | 3/4-10 × 3 in hex bolt: 1.125 in AF, head 0.5 in | STEP · STL |
| hex-bolt-3-4-10x4in | 3/4-10 × 4 in hex bolt: 1.125 in AF, head 0.5 in | STEP · STL |
| hex-bolt-3-4-10x5in | 3/4-10 × 5 in hex bolt: 1.125 in AF, head 0.5 in | STEP · STL |
| hex-bolt-3-4-10x6in | 3/4-10 × 6 in hex bolt: 1.125 in AF, head 0.5 in | STEP · STL |
Plain text: sheet.txt · JSON: /api/geometry?object=hex-bolts-inch
Fits with
Free
Hex nuts, inch: #4-40 to 3/4-10 (ASME B18.2.2)12 sizes★ 12 filesFree
Flat washers, inch: SAE and USS, 1/4 to 3/4 in (ASME B18.21.1 Type A)14 sizes★ 14 filesFree
Socket head cap screws, inch: #10-24, #10-32, 5/16-18, 3/8-16, 1/2-13 (ASME B18.3)5 sizes★ 25 filesFree
Button head socket cap screws, inch: #4-40 to 1/2-13 (ASME B18.3)9 sizes★ 25 filesFree
Imperial machine screws: #4-40, #6-32, #8-32, 1/4-204 sizes★ 18 files
Questions
3/8-16 bolt head?
9/16 in across flats, 15/64 in high.