EXHIBIT 23 CONSENT OF INDEPENDENT CERTIFIED PUBLIC ACCOUNTANTS We hereby consent to the incorporation of our report on page 17 of this Form 10-K by reference in the prospectuses constituting part of the Registration Statements on Form S-8 (Nos. 2-67983, 2-54995 and 33-43902) and on Form S-4 (No. 33-32091) of W.W. Grainger, Inc. 	GRANT THORNTON LLP Chicago, Illinois March 24, 1995 36