3b thread class right-hand 20 thread quantity per inch brislube molybdenum disulfide dry film lubricant coated per mil-8937 (kal-gard type "fa" only passivate surface treated
Used on c-130 aircraft. 3b thread class right-hand 12 thread quantity per inch sagety critcal screw thd component; color code 13538, fed std 595 cadmium except insert surface treated