Used on multiple launch rocket system (mlrs). 1.566" hole diameter 1.850" outside diameter 0.018" material thickness four waves; spring rate 388 lbs/in; load 29 lbs; single turn overlap oil surface treated spring tension
Used on 5820014910215. 0.14" hole diameter 0.25" outside diameter 0.03" material thickness split lock washer also called split lock washer zinc surface treated split helical-right hand