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EXHIBIT 21

Wholly-Owned United States Subsidiaries of the Company		State of Incorporation
Industrial Systems Associates, Inc.		Pennsylvania
	Strategic Distribution Canada Holdings, Inc. (wholly-owned subsidiary of Industrial Systems Associates, Inc.)	Delaware
American Technical Services Group, Inc.		Delaware
	National Technical Services Group, Inc. (wholly-owned subsidiary of American Technical Services Group, Inc.)	Delaware
Strategic Supply, Inc.		Delaware
	Coulson Technologies, Inc. (wholly-owned subsidiary of Strategic Supply, Inc.)	Delaware
	FastenMaster Corporation, Inc. (wholly-owned subsidiary of Strategic Supply, Inc.)	Delaware
Wholly-Owned Foreign Subsidiaries		Country
	Strategic Distribution Services De Mexico, S. A. De C. V. (subsidiary of the Company)	Mexico
	Strategic Distribution Marketing De Mexico, S. A. De C. V. (subsidiary of the Company)	Mexico
	Strategic Distribution (Canada) Company (subsidiary of Strategic Distribution Canada Holdings, Inc.)	Canada

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EXHIBIT 21