Exhibit 32

Nucor Corporation

2003 Form 10-K

Certification of Principal Executive Officer

Pursuant to 18 U.S.C. 1350

(Section 906 of the Sarbanes-Oxley Act of 2002)

I, Daniel R. DiMicco, Vice Chairman, President and Chief Executive Officer (principal executive officer) of Nucor Corporation (the “Registrant”), certify, to the best of my knowledge, based upon a review of the Annual Report on Form 10-K for the year ended December 31, 2003 of the Registrant (the “Report”), that:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Registrant.

/s/ Daniel R. DiMicco
Name:	Daniel R. DiMicco
Date:	March 12, 2004