Standard Locknut Miether


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WTH-18 WTH Series

WTH-18 - WTH Series, Lockwashers, Products

WTH-18

WTH18 Standard Locknut Part Number

This series of lockwashers is coupled with NTH series locknuts.  Lockwashers engage a keyway in a shaft or adapter sleeve slot, then locks the accompanying locknut in position by bending one of the washer tabs into the nut’s outside diameter slots. 

Features and benefits

  • Fast and simple to use mating component to a locknut.
  • Lockwasher size range commonly used with series 231 and 232 spherical roller bearings.
  • Positive lock system for the most rigorous applications.
  • Standard Locknut sets the industry locknut standard


  • WTH lockwashers have a 45 degree tang angle for easier locking.
  • Can be mounted directly to the shaft or on an adapter sleeve.
  • A new lockwasher should be used each time the corresponding NTH locknut and assembly is reinstalled.
  • Unless otherwise specified, manufactured from AISI grade 1020 series steel.
  • Most suitable for applications using cams, clutches, gears, pulleys, sprockets, and other general industry power transmission applications.
Dimensions
R 3.582 INCH Bore
E 4 INCH Face Diameter
B 4.547 INCH Dia. over Tangs
S 0.36 INCH Key Width
X 3.38 INCH Inside Dia.
NOTAN 19 INCH No. of Tangs
T 0.327 INCH Tang Width
Q 0.058 INCH Material Thickness
Weight 8 LB/100