Used on 2530-01-136-8738 tank,cmbt,improved armor,cmbt85sp2,m1ia. 0.250" major thickness a closed circle w/tabs, 2 ea, extending fr inside dia 180 deg apart. tab ht 0.225 in min to 0.230 in max. tabwidth 0.371 in min to 0.373 in max. tabs extend out at 45 deg angle toward inside ctr. outside dia 5.160 in nom. inside dia 4.705 in nom. black oxide coating. quench hardened. outside rim marked 19207-12286006
3a thread class right-hand flush countersunk head style 0.552" grip length 24 thread quantity per inch 125000 single pounds per square inch shear strength 8-32unjc-3b thread size, 0.390 in. lg along the longitudinal axis from the head end, 0.120 in. slot lg, 0.060 in. slot w located 0.330 in. from top of head to center of slot passivate surface treated unjf thread series
3a thread class right-hand flush countersunk head style 0.615" grip length 24 thread quantity per inch 125000 single pounds per square inch shear strength 8-32unjc-3b thread size, 0.280 in. lg along the longitudinal axis from the head end, 0.120 in. slot lg, 0.060 in. w located 0.220 in. from top of head to center of slot passivate surface treated unjf thread series
3a thread class right-hand 0.630" grip length 32 thread quantity per inch 95000 single pounds per square inch shear strength cadmium surface treated unjf thread series
3a thread class right-hand 0.443" grip length 32 thread quantity per inch 95000 single pounds per square inch shear strength cadmium surface treated unjf thread series
3a thread class right-hand 0.345" thread length dished hexagon head style 2.490" grip length 28 thread quantity per inch cadmium surface treated unjf thread series
