1.973" inside diameter 2.255" outside diameter 0.075" major thickness special flat ring style 211000.0 pounds per square inch tensile strength rating oxide surface treated
2a thread class right-hand 0.495" thread length flat countersunk head style 40 thread quantity per inch passivate fastener surface treated unc thread series
3a thread class right-hand 0.542" thread length flat countersunk head style 28 thread quantity per inch cadmium screw surface treated unjf thread series
2a thread class right-hand 0.298" thread length pan head style 32 thread quantity per inch o-ring seal material: etyylene-propylene. o-ring seal is completely contained within the head unc thread series