AMS-6378 Complete Document History
Steel Bars, 1.0Cr - 0.20Mo - 0.045Se (0.39 - 0.48C) (4142H Modified), Die-Drawn, 130 ksi (896 MPa) Yield Strength, Free Machining

Complete Current Edition:
   REVISION H - Die-Drawn, 130 ksi (896 MPa) Yield Strength, Free Machining - July 26, 2019

Obsolete Revision Information:
   REVISION G - Steel Bars, 1.0Cr - 0.20Mo - 0.045Se (0.39 - 0.48C) (4142H Modified), Die-Drawn, 130 ksi (896 MPa) Yield Strength, Free Machining - Aug. 25, 2014
   REVISION F R10 - REAFFIRMED IN 2010 - May 1, 2010
   REVISION F R06 - REAFFIRMED IN 2006 - March 1, 2006
   REVISION F - REAFFIRMED IN 2001 - Oct. 1, 2001
   REVISION E - REAFFIRMED IN 1995 - July 1, 1991
   DOD ADOPTION - FYI ONLY: DOD ADOPTED - Aug. 15, 1990
   REVISION D - OBSOLETE REVISION BY REQUEST - Oct. 1, 1989
   REVISION C - OBSOLETE REVISION BY REQUEST - April 1, 1983
   REVISION B - OBSOLETE REVISION BY REQUEST - Oct. 1, 1981
   REVISION A - OBSOLETE REVISION BY REQUEST - May 15, 1973
   BASE - OBSOLETE REVISION BY REQUEST - July 15, 1961