3a thread class right-hand 0.290" thread length square head style 0.560" grip length 32 thread quantity per inch undercut below shank 0.120 inch min. 0.160 inch max dia., 0.037 inch min. 0.057 inch max length unjf thread series
2a thread class right-hand 1.250" thread length hexagon head style 1.500" grip length 11 thread quantity per inch notch cut out in head 1 inch x 5/16 inch unc thread series
3a thread class right-hand 0.633" thread length 0.237" grip length 28 thread quantity per inch radius of askewed portion of head 0.273min. unjf thread series
Used on spec item. 2a thread class right-hand 0.750" thread length hexagon head style 0.061" hole diameter 20 thread quantity per inch cadmium surface treated unc thread series
3a thread class right-hand 0.491" thread length double hexagon extended washer head style 28 thread quantity per inch color black oxide surface treated unf thread series
2a thread class right-hand 1.500" thread length hexagon head style 0.092" hole diameter 11 thread quantity per inch cadmium surface treated unc thread series