Exhibit 10.37

                                                Alcoa

                                                201 Isabella St at 7th St Bridge
                                                Pittsburgh, PA
                                                15212-5858 USA
                                                Tel:  1 412 553 3875
                                                Fax:  1 412 553 3200

                                                lawrence.purtell@alcoa.com

                                                Lawrence R. Purtell
                                                Executive Vice President
                                                General Counsel
                              March 13. 2000


Howmet International Inc.
475 Steamboat Road
Greenwich, Connecticut 06830

Gentlemen:

     Reference is made to the Corporate Agreement, dated as of December 2, 1997,
as  amended  by the  Amendment,  dated as of March  13,  2000 (as  amended,  the
"Corporate  Agreement"),  by and among Cordant Technologies Inc. (formerly named
Thiokol Corporation),  a Delaware corporation ("Cordant"),  Cordant Technologies
Holding Company (formerly named Thiokol Holding Company), a Delaware corporation
and a wholly owned subsidiary of Cordant  ("Holding"),  and Howmet International
Inc., a Delaware corporation (the "Company").

     We hereby agree to comply with Article I of the Corporate  Agreement to the
same extent as if we were  Cordant  unless and until the  Agreement  and Plan of
Merger, to be dated as of March 14, 2000 (the "Merger Agreement"),  by and among
Alcoa Inc. ("Alcoa"), Omega Acquisition  Corp. (the  "Purchaser") and Cordant is
terminated  prior to our purchase of Cordant  shares in the Offer (as defined in
the Merger Agreement).

     This letter  agreement is given in  consideration of the Board of Directors
of the Company approving for purposes of Section 203 of the General  Corporation
Law of  the  State  of  Delaware  ("DGCL")  Alcoa  and  the  Purchaser  becoming
"interested stockholders" pursuant to Alcoa's execution of this letter agreement
or their entry into an agreement  with Cordant  providing  for a tender offer by
the Purchaser to acquire the outstanding shares of common stock, par value $1.00
per share,  of Cordant (the " Cordant  Common  Stock") and the  preferred  share
purchase  rights  issued or issuable  under the Cordant  Rights  Agreement  (the
"Rights," and together with Cordant Common Stock, the "Shares"),  to be followed
by  a  merger  in  which  they  would  acquire  the  remaining  Shares  and  the
consummation  of such  transactions  and the Board of  Directors  of the Company
taking all  appropriate  action so that Section 203 of the DGCL, with respect to
the Company, will not be applicable to Alcoa and the Purchaser by virtue of such
actions.


                                      1
<PAGE>


     This letter agreement shall be governed by New York law, without  reference
to its conflict of law principles.

     Please  confirm your  agreement  with the foregoing by signing the enclosed
copy of this letter agreement and returning it to us, whereupon it will become a
binding agreement.

Very truly yours,

ALCOA INC.




By:   /s/ Lawrence R. Purtell
      -----------------------
      Lawrence R. Purtell
      Executive Vice President and General Counsel


ACKNOWLEDGED AND AGREED:
HOWMET INTERNATIONAL INC.


By:   /s/ Roland A. Paul
      ------------------
      Name:  Roland A. Paul
      Title: Vice President and General Counsel






                                       2