Final Term Sheet

Filed Pursuant to Rule 433

Registration

Statement No. 333-246166

March 2, 2022

NUCOR CORPORATION

$550,000,000 3.125% Notes due 2032

$550,000,000 3.850% Notes due 2052

*Note: A security rating is not a recommendation to buy, sell or hold securities and may be subject to revision or
withdrawal at any time.

**Note: It is expected that delivery of the Notes will be made against payment therefor on or about
March 11, 2022, which will be the seventh business day following the date hereof (such settlement cycle being referred to as “T+7”). Pursuant to Rule

15c6-1

under the Securities Exchange
Act of 1934, as amended, trades in the secondary market generally are required to settle in two business days, unless the parties to any such trade expressly agree otherwise. Accordingly, purchasers of the Notes who wish to trade the Notes on the
date of pricing or the following four business days will be required, by virtue of the fact that the Notes initially will settle in T+7, to specify an alternate settlement arrangement at the time of any such trade to prevent a failed settlement.
Purchasers of the Notes who wish to trade the Notes on the date of pricing or the following four business days should consult their advisors.

The
issuer has filed a registration statement (including a prospectus) with the SEC for the offering to which this communication relates. Before you invest, you should read the prospectus in that registration statement and other documents the issuer has
filed with the SEC for more complete information about the issuer and this offering. You may get these documents for free by visiting EDGAR on the SEC Web site at www.sec.gov. Alternatively, the issuer, any underwriter or any dealer participating in
the offering will arrange to send you the prospectus if you request it by calling BofA Securities, Inc. toll-free at



1-800-294-1322,



J.P. Morgan Securities LLC collect at


212-834-4533


or Wells Fargo Securities, LLC toll-free at



1-800-645-3751.

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