Precision Series

Precision bearing threads in Series PN, PL, and PT are manufactured to National Standard Class 3.

Series	Name	Description
PL	*Precision Retaining Nut*	Same as the PN, but with left-hand threads to resist rotational forces from the counter-clockwise direction.
PN	*Precision Retaining Nut*	Retaining nut to meet the higher precision needs that the N-AN, TN-TAN, and ABMA specifications do not provide. Assure better performance, greater accuracy, smoother operation, and longer life in all applications.
PT	*Precision Retaining Nut*	Thinner, lighter section retaining nuts for use with extra-light ball bearings in light applications such as computer equipment and instruments.
PW	*Precision Lockwasher*	Precision lockwasher for use with the PN and PL series precision retaining nuts.
*PWT*	*Precision Lockwasher*	Precision lockwasher for use with the PT series precision retaining nut. Keybent.
*PWTF*	*Precision Lockwasher*	Precision lockwasher for use with the PT series precision retaining nut. Not keybent (flat).