3a thread class right-hand 0.725" thread length flat countersunk head style 0.865" grip length 20 thread quantity per inch aluminum surface treated unjf thread series
3.402" inside diameter spiral ring style 37.180 lbs; thickness 0.061 in; wall thickness 0.198; chamfer min 0.056 max 0.070; suitable for medium duty purposes
Used on m982/3 monocular night vision goggles and an/pvs-7a night vision monocular and binocular goggles. 6.000mm thread length 32 thread quantity per inch unc thread series
3a thread class right-hand 0.476" thread length flat countersunk head style 0.878" grip length 24 thread quantity per inch cadmium surface treated unjf thread series
2a thread class right-hand 1.000" thread length 20 thread quantity per inch washer 0.250 dameter 0.125 inch thick round, closed w/shoulder unc thread series
Used on coast guard hh65a 1-minute oei system installation. 3a thread class right-hand flat extended washer head style 28 thread quantity per inch unjf thread series