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9/16-18 UNF UNF bolt size
13/16 wrench
wrench size for 9/16-18 UNF UNF bolt
9/16-18 UNF UNF bolt — Automotive, aerospace.
Full specification
| System | Imperial UNF (fine) |
| Nominal diameter | 0.5625 in (14.29 mm) |
| Thread pitch | 18 TPI |
| Wrench size | 13/16 |
| Tap drill | 33/64 (13.1 mm) |
| Clearance hole | 19/32 |
| Common grade / class | Grade 5 |
| Typical torque | 150 Nm (110.6 ft·lb) |
🔧 Torque unit converter
Pre-filled with typical torque for 9/16-18 UNF (Grade 5).
About 9/16-18 UNF UNF bolts
Automotive, aerospace.
UNF (Unified National Fine) thread has more threads per inch than UNC (coarse). 9/16-18 UNF has 18 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 9/16-18 UNF bolt?
- 9/16-18 UNF bolt uses a 13/16 wrench.
- What is the torque for 9/16-18 UNF bolt?
- Typical torque for 9/16-18 UNF UNF bolt in Grade 5 is about 150 Nm (110.6 ft·lb).
- What is UNF thread?
- UNF (Unified National Fine) thread has more threads per inch than UNC. 9/16-18 UNF has 18 TPI.