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Stainless Steel Nylon Lock Nuts

What types of Stainless Steel Locking Nuts are available?

The most common stainless steel locking nut is the nylon lock nut with nylon locking insert. Also available is the all-metal stainless locking nut which has no plastic parts and therefore performs well at high temperature. Stainless Steel Jam Nuts or Stainless Steel Half Nuts are also often used, by using a pair and tightening them up on themselves. The most effective locking system is the Nord-Lock wedge-locking washers which uses cam technology such that nuts cannot loosen under vibration.

How do I stop stainless steel nuts and bolts galling?

All stainless steel bolts and nuts and especially nylon locking nuts should be lubricated with a Nickel or PTFE based lubricant for stainless to prevent stainless steel galling. Galling or cold-welding can occur when oxide film coated metals (like stainless steel) of similar hardness are tightened without lubrication and bind at a molecular level.


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