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High quality L-key set out of stainless steel for hexagon socket screws by Wera
An inner key seats in the shaft keyway to prevent the washer from rotating
With adjustable headband and polyurethane ear cushion foam pads
The ergonomic shape of the handle fills the ball of the hand well
Whittet Higgins PWT-05 Lockwasher Precision Belt frequency meter High quality L-key set outThe Whittet Higgins PWT 05 is a precision bearing lockwasher with precision ground parallel faces that keep the assembly square to the threaded shaft. A keyed inner bore seats on the shaft keyway to prevent rotation, while an external tang bends into a spanner slot of the mating locknut to positively lock the assembly against loosening from vibration, shock, and torque. Designed to the ANSI ABMA 8. 2 1999 specification, the PWT 05 pairs with PT series
