Torque Specs for Stainless Steel

Different bolts require different amounts of torque to tighten properly.

Bolts made of stainless steel are among the strongest, most reliable, and most resistant to corrosion. They have specific torque specifications depending on their established grade, size and lubrication. Adhering to torque specifications ensures that your bolts are fastened properly and are markedly less likely to fail.

Types

Stainless-steel bolts are available in several types. 18-8 stainless-steel bolts are often used because they are extremely resistant to corrosion. Another commonly used stainless steel bolt is called 316; this bolt is intended for industrial settings and for surgical implants because it holds up under extreme stress.

Dimensions

Stainless-steel bolts are identified by their dimensions, specifically their diameters and thread sizes. An example bolt is identified as 1/4 x 22. This means that the bolt has a diameter of 1/4 of an inch and has 22 threads per inch. The bolt's size directly affects its torque specifications.

Lubed vs. Unlubed

There are many different types of stainless-steel bolts, all with different torque specifications. However, individual bolts have different torque specifications if they are lubed or if they are unlubed. Unlubed bolts have a higher coefficient of friction, thus they require more torque to be tightened properly.

References

• BoSun Supplies, Co.: Screw Sizes & Threads
• Engineer's Edge: Torque Table