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                       SECURITIES AND EXCHANGE COMMISSION

                             WASHINGTON, D.C. 20549

                            ------------------------

                                   FORM 8-K

                                 CURRENT REPORT
                     PURSUANT TO SECTION 13 OR 15(d) OF THE
                         SECURITIES EXCHANGE ACT OF 1934

                        Date of Report: February 6, 1998

                                    UST CORP.
             (Exact name of registrant as specified in its charter)

  Massachusetts                      0-9623                    04-2436093     
(State or other jurisdiction     (Commission File No.)     (IRS Employer      
of Incorporation)                                          Identification No.)

        40 Court Street                                         02108     
      Boston, Massachusetts                                     (Zip Code)
(Address of principal executive offices)                        

                                 (617) 726-7000
                         (Registrant's telephone number,
                              including area code)

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Item 7. Financial Statements, Pro Forma Financial Information and Exhibits.

        The following exhibits are filed with this Current Report on Form 8-K:


        Exhibit
        Number                   Description                                  

          23.1             Consent of Arthur Andersen LLP, Independent 
                           Auditors of Firestone Financial Corp.

          23.2             Consent of Wolf & Company, P.C., Independent
                           Auditors of Somerset Savings Bank

          23.3             Consent of Arthur Andersen LLP, Independent Auditors 
                           of Affiliated Community Bancorp, Inc.

          23.4             Consent of KPMG Peat Marwick LLP, Independent 
                           Auditors of The Federal Savings Bank and Main Street 
                           Community Bancorp, Inc. 

          99.1             Unaudited Financial Information of Firestone 
                           Financial Corp. as of September 30, 1997

          99.2             Financial Statements of Firestone Financial Corp.
                           as of December 31, 1996

          99.3             Financial Statements of Firestone Financial Corp.
                           as of December 31, 1995                           

          99.4             Unaudited Financial Information of Somerset 
                           Savings Bank as of September 30, 1997     

          99.5             Financial Statements of Somerset Savings Bank 
                           as of December 31, 1996                            

          99.6             Unaudited Financial Information of Affiliated
                           Community Bancorp, Inc. as of September 30, 1997 

          99.7             Financial Statements of Affiliated Community 
                           Bancorp, Inc. as of December 31, 1996 

          99.8             UST Corp., Firestone Financial Corp., Somerset 
                           Savings Bank and Affiliated Community Bancorp, 
                           Inc. Unaudited Pro Forma Condensed Financial 
                           Information
                           
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                                 EXHIBIT INDEX

Exhibit                                                                Page
Number                   Description                                   Number

 23.1    Consent of Arthur Andersen LLP, Independent Auditors of          5
         Firestone Financial Corp.
      
 23.2    Consent of Wolf & Company, P.C., Independent Auditors of         6
         Somerset Savings Bank
      
 23.3    Consent of Arthur Andersen LLP, Independent Auditors of          7
         Affiliated Community Bancorp, Inc.

 23.4    Consent of KPMG Peat Marwick LLP, Independent Auditors           8
         of The Federal Savings Bank and Main Street Community 
         Bancorp, Inc.

 99.1    Unaudited Financial Information of Firestone                     9
         Financial Corp. as of September 30, 1997
      
 99.2    Financial Statements of Firestone Financial Corp.               13
         as of December 31, 1996
      
 99.3    Financial Statements of Firestone Financial Corp.               28
         as of December 31, 1995
      
 99.4    Unaudited Financial Information of Somerset                     49
         Savings Bank as of September 30, 1997
      
 99.5    Financial Statements of Somerset Savings Bank                   56
         as of December 31, 1996
      
 99.6    Unaudited Financial Information of Affiliated                   82
         Community Bancorp, Inc. as of September 30, 1997
      
 99.7    Financial Statements of Affiliated Community Bancorp,           88
         Inc. as of December 31, 1996
      
 99.8    UST Corp., Firestone Financial Corp., Somerset Savings         125
         Bank and Affiliated Community Bancorp, Inc. Unaudited 
         Pro Forma Condensed Financial Information 
         

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                                   SIGNATURES

     Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the
undersigned hereunto duly authorized.


                                                     UST Corp.

                                             /s/ James K. Hunt
                                             ---------------------------------
                                             James K. Hunt
                                               Executive Vice President, Chief
                                               Financial Officer and Treasurer


                                             /s/ Eric R. Fischer
                                             ---------------------------------
                                             Eric R. Fischer
                                               Executive Vice President,
                                               General Counsel and Clerk

Dated: February 6, 1998



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