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).

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