Used on spec item. 3a thread class right-hand 0.620" thread length double hexagon w/hole head style 0.248" grip length 32 thread quantity per inch unjf thread series
3a thread class right-hand flush countersunk head style 1.067" grip length 32 thread quantity per inch dye color natural anodize surface treated unjf thread series
2a thread class flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 0.407" grip length 40 thread quantity per inch unc thread series
3a thread class right-hand 0.503" thread length dished hexagon head style 1.865" grip length 20 thread quantity per inch cadmium surface treated unf thread series
3a thread class right-hand 0.569" thread length dished hexagon head style 1.552" grip length 18 thread quantity per inch cadmium surface treated unjf thread series
3a thread class right-hand 0.569" thread length dished hexagon head style 1.740" grip length 18 thread quantity per inch cadmium surface treated unjf thread series
3a thread class right-hand 0.128" thread length flat chamfer head style 40 thread quantity per inch navy special project passivate screw surface treated unc thread series
