How do I know how much torque my bolts are?
The marking check: After tightening the bolt, mark the bolt surface and that of the product or workpiece. Then loosen the bolt. Re-tighten it until the markings re-align. The torque needed to return the bolt to its original position is the torque value of the bolt.
Are torque specs for nuts and bolts important?
It’s important, but not well-known, that many fasteners require a very specific tightening specification. When it comes to certain nuts and bolts on cars, guessing it’s “tight enough” is almost never right.
Are torque bolts necessary?
The Importance of Proper Torque Typically, an under torqued bolt will deform and be unable to provide as much clamping force as needed. An over torqued bolt will break.
What is the torque for 1/2 Grade 8 bolt?
Tightening Torque Guide for Grade 5 & 8 Hex Cap Screws
| GRADE 5 | GRADE 8 | |
|---|---|---|
| Coarse Thread | Coarse Thread | |
| 7/16-20 (.4375) | 7575 | 7/16-20 (.4375) |
| 1/2-20 (.500) | 10200 | 1/2-20 (.500) |
| 9/16-18 (.5625) | 12975 | 9/16-18 (.5625) |
Why do we need a torque calculator for bolts?
From the rigors of the industry to the rumble of cars, trains, and planes, to the furniture that adorns our homes and offices, bolts play an integral role in assembling the materials that structure our lives. Perhaps it’s their ubiquity that makes bolts so underappreciated as a mechanical component. Too often bolt selection is made in haste.
What happens when the torque is too much?
Too much tension on the bolt will cause the bolt to be stretched beyond the point of yield. The bolt will be permanently stretched. The bolt will loosen the grip on the parts that are being fastened. If the bolt is tightened again, the bolt will break. Do not reuse bolts that have been permanently stretched.
What kind of strength does cat bolts have?
Cat® Bolts are engineered to exceed SAE Grade 8 standards and ISO 10.9 strength specifications for longer wear life and improved reusability.
What’s the correct torque for an imperial bolt?
Thankfully, standards organizations have assembled the standard tensile strengths for common bolts into easy-to-use standards. SAE J429 governs imperial sizes, while ISO 898 governs metric-size bolts. 1/4 to 3/4in. >3/4 to 1 1/2in. For imperial bolts, grades 5 and 8 are most common.