Distribution Solutions (DSGR) 10-K 2015 FY Annual report

EXHIBIT 23

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

Lawson Products, Inc.

Chicago, Illinois

We hereby consent to the incorporation by reference in the Registration Statements on Forms S-3 (No. 333-202169) and S-8 (No. 333-199243) of Lawson Products, Inc. of our reports dated February 18, 2016, relating to the consolidated financial statements and financial statement schedule, and the effectiveness of Lawson Products, Inc.’s internal control over financial reporting, which appear in this Form 10-K.

/s/ BDO USA, LLP

Chicago, Illinois

February 18, 2016