What is the torque on a 7 8 bolt?
US Recommended Bolt Torque
| Size | Recommended Torque | |
|---|---|---|
| Grade 2 | 18-8 S/S | |
| 5/8″ | 73 | 93 |
| 3/4″ | 125 | 128 |
| 7/8″ | 129 | 194 |
What is the torque on a 5’8 stud?
ASTM A449 / SAE Grade 5*
| Bolt Size | TPI | Tightening Torque (ft lbs) |
|---|---|---|
| Galv+Waxed | ||
| 1⁄2 | 13 | 38 |
| 9⁄16 | 12 | 54 |
| 5⁄8 | 11 | 75 |
Why do we need a torque specification for a TTY bolt?
This torque specification applies the proper clamp load to the joint while accounting for friction provided by the threads and the underside of the bolt head. Today’s engines require higher clamping forces (due to increased combustion pressure) which cannot be achieved with conventional small diameter bolts normally found in these engines.
What are the threads in a torque clamp?
Locknut Size Threads per inch Steel Hex Locknut Steel Hex Flange Nut Grade C FNL Grade 9 Grade F Grade G Clamp Load (lbs.) Tightening Torque Clamp Load (lbs.) Tightening Torque Clamp Load (lbs.) Tightening Torque Clamp Load (lbs.) Tightening Torque min max min max min max min max Coarse Thread Series
Where can I find the latest torque specs?
Find the most up-to-date torque spec listings in electronic format. FelPro-Only.com is your convenient source for advanced sealing information. It’s the place to learn and share “tricks of the trade,” find proper diagnosis and installation instructions, and enjoy easy access to parts reference.
What should the torquing specs be on a HO engine?
Note: Be sure to lightly oil the bolt threads for proper torquing specs for bolts not in the water jackets, otherwise use liquid thread sealer for the bolts that are in the water jackets (bottom ones).