Used on 1520-01-457-5179, helicopter,cargo-transport. 3a thread class right-hand 0.750" thread length hexagon head style 40 thread quantity per inch screw, hex head, cruciform recess, full thread, alloy steel, 160, 000 psi tensile cadmium surface treated unjc thread series
3a thread class right-hand 0.528" thread length dished hexagon head style 0.500" grip length 20 thread quantity per inch cadmium surface treated unjf thread series
Used on handling, adapter, ad base assembly. right-hand 13 thread quantity per inch insert screw, thread, coarse surface treatment is dry film lubricant; the number of free coils of the insert are counted 90 deg from tang for all sizes lubricant surface treated coil unc thread series
Used on cass/otps. 1.125" overall length 0.375" overall width mounting hole diameter is oblonged in shape, very different from the -01. passivate surface treated
