3a 1st end thread class 12 1st end thread quantity per inch flange in center 1.625 in. dia; u/o f-16 acft passivate surface treated unj 1st end thread series
al al 2024-T351 per qq-a-200/3, anodize per mil-a-8625 ty ii, cl 1, 1 end 0.653-0.659 dia by 1.77 in. deep, flaress tube conn w/gasket seal; 2 end 0.653-0.659 dia by 2.400 in. deep, bulkhead flairless tube; 3 end 0.6892-0.6977 in. dia by 1.200 by 0.720 deep; threads 0.7500-16 unjf per MS33514E12