The self-locking nut is to avoid the phenomenon that ordinary nuts become loose due to vibration and other reasons during operation. Self-locking nuts are mainly used for loosening and anti-vibration. Used in special places. The task principle is usually self-locking by friction. Self-locking nuts a

Refers to the part between the connecting piece and the nut. A flat metal ring used to protect the surface of the connector from chafing by the nut and to disperse the pressure of the nut on the connector.Washer is divided into: flat washer - C level, large washers - A and C level, large washers - C

Wing Nut Long TypeSIZEG （mm）F （mm）B （mm）L （mm）E （mm）Package (Pcs/Bag)Approx.Weight (Kg/1000Pcs)AISI 304 Cost (RMB/Pcs)AISI 316 Cost (RMB/Pcs)M619.0 44.7 16.2 8.6 4.8 100 17.5 2.8 4.0 M820.0 44.7 16.4 8.8 4.9 100 17.0 3.0 4.2 M1023

Axial Proof Load for ThreadRive nutMechanical charThread SizeM3M4M5M6M8M10M12Round and Hex,Flat and (Reduced)countersunk head Proof LoadSteel/stainless steel390068001150016500250003200034000Aluminum19004000650078001230017500——

Because stainless steel 304 have good ductility, if you use it misemploy, it will be thread galling, and if you still use electric wrench after thread galling, the bolt will be broken.there are below advice way to avoid the thread galling, 1. chose right bolts, a, chose suitable bolt length and diam