Important Note: Due to the plating thickness, only hot dipped galvanized bolts should be used on hot dipped galvanized nuts.
USS pattern is the most common type of flat washer.
A style of prevailing torque lock nut. Also called tri-loc. This style of lock nut deforms the threads of the mated fastener.
These genuine Anco pn-loc nuts do not require high installation torque and can be installed and removed without thread damage.