Exhibit 23.1

Consent of Independent Registered Public Accounting Firm

We consent to the incorporation by reference in the Registration Statement on Form S-8 (No. 333-205952) of our report dated June 25, 2019, appearing in this Annual Report on Form 11-K of the Barnes Group Inc. Retirement Savings Plan for the years ended December 30, 2018 and 2017.

/s/ Fiondella, Milone & LaSaracina LLP

Fiondella, Milone & LaSaracina LLP

Glastonbury, Connecticut

June 25, 2019