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5/16-24 UNF UNF bolt size
1/2 wrench
wrench size for 5/16-24 UNF UNF bolt
5/16-24 UNF UNF bolt — Precision instruments, aerospace.
Full specification
| System | Imperial UNF (fine) |
| Nominal diameter | 0.3125 in (7.94 mm) |
| Thread pitch | 24 TPI |
| Wrench size | 1/2 |
| Tap drill | I (6.9 mm) |
| Clearance hole | 21/64 |
| Common grade / class | Grade 5 |
| Typical torque | 22 Nm (16.2 ft·lb) |
🔧 Torque unit converter
Pre-filled with typical torque for 5/16-24 UNF (Grade 5).
About 5/16-24 UNF UNF bolts
Precision instruments, aerospace.
UNF (Unified National Fine) thread has more threads per inch than UNC (coarse). 5/16-24 UNF has 24 threads per inch.
Fine threads provide better vibration resistance and finer adjustment, commonly used in automotive and aerospace applications.
Frequently asked questions
- What size wrench fits 5/16-24 UNF bolt?
- 5/16-24 UNF bolt uses a 1/2 wrench.
- What is the torque for 5/16-24 UNF bolt?
- Typical torque for 5/16-24 UNF UNF bolt in Grade 5 is about 22 Nm (16.2 ft·lb).
- What is UNF thread?
- UNF (Unified National Fine) thread has more threads per inch than UNC. 5/16-24 UNF has 24 TPI.