UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM SD

Specialized Disclosure Report

BARNES GROUP INC.

(Exact name of registrant as specified in its charter)

Delaware

(State or other jurisdiction of incorporation)

1-4801	06-0247840
(Commission File Number)	(I.R.S. Employer Identification No.)

123 Main Street, Bristol, Connecticut	06010
(Address of principal executive offices)	(Zip Code)

Jay Knoll (860) 583-7070

Registrant's telephone number, including area code

Check the appropriate box to indicate the rule pursuant to which this form is being filed, and provide the period to which the information in this form applies:

☒ Rule 13p-1 under the Securities Exchange Act (17 CFR 240.13p-1) for the reporting period from January 1 to December 31, 2023.

Section 1 - Conflict Minerals Disclosure

Item 1.01 Conflict Minerals Disclosure and Report

Conflict Minerals Disclosure

A copy of Barnes Group Inc.’s Conflict Minerals Report for the year ended December 31, 2023, is filed as Exhibit 1.01 hereto and is publicly available at https://ir.barnesgroupinc.com/financials/sec-filings/default.aspx.

Item 1.02 Exhibit

The Conflict Minerals Report described in Item 1.01 is filed as Exhibit 1.01 to this Form SD.

Section 2 - Exhibits

Item 2.01 Exhibits

Exhibit 1.01 Barnes Group Inc. Conflict Minerals Report for the year ended December 31, 2023.

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 duly authorized undersigned.

BARNES GROUP INC.
(Registrant)
By:	/s/ Jay B. Knoll	May 31, 2024
	Jay B. Knoll	(Date)
	Senior Vice President, General Counsel and Secretary