Used on f-111 acft. 0.8600" overall length involute serration nas 542-64-31; penetrant insp reqd per mil-i-6866, type 1, after final machining 21c solid, external flange
Used on f-111 acft. 0.9400" overall length involute serration nas 542-64-31; penetrant insp reqd per mil-i-6866, type 1, after final machining solid, external flange
Used on a-10a acft. 1.4700" overall length heat treat to 125 to 145 ksi per mil-h-6875; magnetic particle inspect after final machining per mil-i-6868 cadmium surface treated 17c solid, plain, no outside flanges
Used on a-10a acft. 1.6200" overall length magnetic particle insp after final machining per mil-i-6868 cadmium surface treated 17c solid, plain, no outside flanges