T.O.  1-1A-9 TABLE 2-2 - SPECIFICATION CROSS REFERENCE (CONT’D) COMP/ALLOY DESIGN FORM/COMMODITY AMS FEDERAL MILITARY 420 Bars & Billets (For MIL-S-862 C1 5 Reforging) Bars and Forgings 5620 (Free Mach) (51420) Bars and Forgings 5621 Bars 5621 QQ-S-763 C1 420 Plate, Sheet & Strip 5506 QQ-S-766 C1 420 Wire QQ-W-423 431 Bars & Billets (For MIL-S-862 Reforging) Bars, Billets, Forg- MIL-S-18732 ings, Tubing Castings, Sand 5372 Bars, Forgings 5682 QQ-S-763, C1 431 431 MOD Castings, Precision 5353 Investment 440 C Bars & Forgings 5630 QQ-S-763 C1 440C 440 A Bars & Forgings 5631 QQ-S-763, C1 440A 440F Bars & Forgings 5632 QQ-S-763, C1 440F 14-4PH Castings, Investment 5340 15-7 MO Bar & Forging 5657 Plate, Sheet and 5520 Strip 17-4 PH Bar 5643 Castings - Investment 5342 (Heat Treated 130,000 PSI) Castings - Investment 5343 (Heat Treated 150, 000 PSI) Castings - Investment 5344 (Heat Treated) 2-32