"COPPER ALLOY,QQ-C-390,ALLOY 836,922 OR 903; NICKEL,MIL-C-26074,CLASS 2; 2.062 IN. NOM ID; 2.500 IN. NOM OD; 4.000 IN. NOM LG; 0.125 IN. NOM FLANGE THK; 3.250 IN. NOM FLANGE DIA; BORE THD 1.250-11.500NPT AT END OPPOSITE FLANGE; OD THD 2.500-12UN-2A AT END OPPOSITE FLANGE"