ALL METAL LOCK NUT DESIGNS
Automation Style also called: stover style, crowned top, coned top
Earnest stocks the automation style in sizes 1/4 to 1” for its standard line
Automation Style
Collar Style
Earnest stocks the collar style in sizes 1 1/8 and larger.
Collar Style
Crimp Style
Earnest stocks the collar style in sizes 1 1/8 and larger.

Crimp styles
Crimp styles: The “locking” feature is created by crimping the top of the nut to create an interference in the thread (prevailing torque) when installed onto a bolt or cap screw. Both the automation and collar styles may be crimped in several ways.