2a nut thread thread class 0.380" nut thread thread length head dia. has two parallel flats each 0.340 in. from center, and two 0.156 in. dia. holes located on aa 0.875 in. dia. bolt circle welding
3a thread class right-hand 0.320" thread length dished hexagon head style 2.115" grip length 32 thread quantity per inch passivate surface treated unjf thread series
2a thread class right-hand 0.310" thread length knurled no. 1 head style 28 thread quantity per inch point center axis drilled 0.125 in. dia. by 0.120 in. dp chromium surface treated unf thread series
2a nut thread thread class 0.465" nut thread thread length 0.500" overall length furnished with aluminum anodized plate, 1.250 in. dia with five holes 0.169 in. min 0.174 in.max dia equally spaced on 0.875 in. circle dia self-locking
3a thread class right-hand flush countersunk head style 1.557" grip length 28 thread quantity per inch 95000 single pounds per square inch shear strength cadmium surface treated unjf thread series
flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 0.126" grip length cadmium sleeve or aluminum sleeve surface treated
2a thread class right-hand 0.312" thread length pan head style 32 thread quantity per inch passivate screw surface treated enamel f-157, 36231 fed-std-595 head only unc thread series
