3a thread class hexagon head style 28 thread quantity per inch screw, hex head with cross recess recess size: 3; recess depth: 0.095 in min, 0.118 in max; ultimate tensile min lbs: 5820 passivate surface treated unjf thread series
Used on 2355-20-001-9922 car,armored,mine disposal. right-hand 0.875" thread length 16 thread quantity per inch screw hex skt hd cap 3/8 inch-16unc x 7/8 inch lg phosphate surface treated unc thread series