Metal Nuts

Metric Nylon Insert Lock Nuts (DIN 985) ... When a bolt or screw reaches the collar, the threads and nylon form a tight, frictional fit, restricting movement of the fastener. Nylon-insert locknuts are excellent for use where a long-term lock is necessary, or to prevent loosening due to vibration.

This SS Thin Lock Nut is used in conjunction with all tie plates without thread. The wings on the nut ensures practical advantages in handling.