3a thread class right-hand 0.158" thread length flat countersunk head style 32 thread quantity per inch passivate screw surface treated unc thread series
3a thread class right-hand 0.615" thread length double hexagon w/hole head style 0.037" hole diameter 0.065" grip length 32 thread quantity per inch color black oxide surface treated unf thread series
right-hand 0.250" thread length undercut pan no. 2 head style finish: passivate in accordance with qq-p-35, type is optional.material:cres in accordance with astm A582, type 303, condition a, cold finished unc thread series
3a thread class right-hand 0.641" thread length hexagon head style 0.070" hole diameter 3.562" grip length 24 thread quantity per inch unf thread series
2a thread class right-hand 0.690" thread length hexagon head style 5.370" grip length 20 thread quantity per inch navy special project unc thread series
flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 0.438" grip length ns" letters after the material code "b" indicate no preference to lock type (may be visible or internal) . rivets with no letter code (indicating visible lock type) chromate sleeve surface treated
Used on w/s:aircraft, eagle f-15. flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 49000 single pounds per square inch shear strength
2a thread class right-hand 0.380" thread length flat chamfer head style 32 thread quantity per inch altered from NAS1352C06-14 passivate surface treated unc thread series
