Special Features:

This is a complete device consiting of the -1 and -2 halves; material is 17-4ph crs, 150-170 ksi heat treat; there are 50 serrations equally spaced on the face of each of the two mating sides; the -1 side has accomidations for a lockwire, hole size is 0.062; -2 side has a 0.082 wide keyway extending into the center of the washer.

Properties:

A washer which is usually round with a centrally located hole. Its edges and two bearing surfaces are so designed that applied pressure brings into play the spring tension and/or frictional locking principle which materially resists any tendency toward turning. It may be made of one or two pieces