MS18308 (NOTICE 1), MILITARY STANDARD: ALLOY STEEL SOCKET WELDING FLANGES AND FLANGED NIPPLES, 1/4 INCH AND 3/8 INCH, 600 POUNDS PER SQUARE INCH AT 850 DEG. F (MAXIMUM) (19 APR 1991)

MS18308 (NOTICE 1), MILITARY STANDARD: ALLOY STEEL SOCKET WELDING FLANGES AND FLANGED NIPPLES, 1/4 INCH AND 3/8 INCH, 600 POUNDS PER SQUARE INCH AT 850 DEG. F (MAXIMUM) (19 APR 1991)., MS18308(SH), dated 18 June 1976, has been reviewed and determined to be valid for use in acquisition.