EXHIBIT 21 SUBSIDIARIES OF CITATION CORPORATION STATE OF ORGANIZATION Citation Automotive Sales Corp. Michigan Mansfield Foundry Corporation Ohio Iroquois Foundry Corporation Wisconsin Oberdorfer Industries Corp. New York Berlin Foundry Corporation Wisconsin Castwell Products, Inc. Illinois HTC Acquisition Corporation Indiana d/b/a HI-TECH Corporation BAC Acquisition Corporation Indiana d/b/a Bohn Aluminum Corporation Southern Aluminum Castings Company Alabama PSFM Acquisition Corporation Pennsylvania d/b/a Pennsylvania Steel(1) Citation Castings, Inc. Alabama Texas Steel Corporation Texas TSC Texas Corporation Delaware Texas Foundries, Ltd. Texas Mabry Foundry Company, Ltd. Texas Interstate Forging Industries, Inc.(1) Wisconsin ISW Texas Corporation (subsidiary of Interstate Delaware Forging Industries, Inc.) Interstate Southwest, Ltd. Texas (1) PSFM Acquisition Corporation was sold, and Interstate Forging Industries, Inc. was acquired, after the close of fiscal 1996. 63