2a nut thread A2a nut thread b thread class right-hand nut thread aright-hand nut thread b 2.000 feet overall length 7 nut thread A7 nut thread b thread quantity per inch navy special project unc nut thread aunc nut thread b thread series
Used on ah-1t/w acft. 3b thread class right-hand 0.375" grip length 28 thread quantity per inch mfg nomenclature is identified as stud cone passivate surface treated unf thread series
flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 0.235" grip length anodize body or chromate body surface treated
undersized oval countersunk head style 0.126" grip length 95000 single pounds per square inch shear strength tail end of rivet is 45cb titanium alloy per ams 4982
3a thread class right-hand 0.320" thread length dished hexagon head style 0.740" grip length 32 thread quantity per inch aluminum surface treated unjf thread series
3a thread class right-hand 0.148" thread length flat countersunk head style 56 thread quantity per inch passivate screw surface treated unjc thread series