Exhibit 21.1
 State, ProvinceOr Country ofName
    
    IncorporationAjax Tocco de Mexico S.A. de C.V.
    
    MexicoAjax Tocco International Limited
    
    BirminghamEnglandAjax Tocco Magnethermic Canada Limited
    
    OntarioAjax Tocco Magnethermic Corporation (6)
    
    OhioAjax Tocco Magnethermic GmbH
    
    OhioAjax Tocco Magnethermic (Shanghai) Co. Ltd.
    
    ChinaAjax Tocco Magnethermic Limited
    
    Hong KongAjax Tocco Magnethermic Poland Spolka Z Oyranicgona Odpowiedgeshnoscea
    
    PolandBallybeg
Finance Company of Dublin Limited
    
    IrelandChambersburg Acquisition Corp.
    
    PennsylvaniaColumbia
Nut & Bolt LLC
    
    OhioControl Transformer, Inc.
    
    OhioFECO, Inc.
    
    IllinoisForging Parts & Machining Company
    
    OhioFoundry Service GmbH
    
    GermanyGateway Industrial Supply LLC
    
    OhioGeneral Aluminum Mfg. Company
    
    OhioILS Technology LLC
    
    OhioInduction Management Services, LLC
    
    MichiganIndustrial Equipment Group Asian Holdings Company Limited
    
    IrelandIndustrial Equipment Group European Holding Company Limited
    
    IrelandIntegrated Holding Company
    
    OhioILS Supply Technologies S.A. de C.V.
    
    MexicoIntegrated Logistics Holding Company
    
    OhioIntegrated Logistics Solutions, Inc.
    
    OhioJapan Ajax Magnethermic Co. Ltd.
    
    JapanNABS Supply Technologies S. De R.L. De CV
    
    MexicoPark-Ohio Forged & Machined Products LLC (5)
    
    OhioPark-Ohio Asian Holding Company Limited
    
    IrelandPark-Ohio European Holding Company Limited
    
    IrelandPark-Ohio International Holding Company Limited
    
    IrelandPark-Ohio International Leasing Company Limited
    
    IrelandPark-Ohio International Treasury Company Limited
    
    IrelandPark-Ohio Latin American Holding Company Limited
    
    IrelandPark-Ohio Industries, Inc. (1)
    
    OhioPark-Ohio Industries (Shanghai) Co. Ltd.
    
    ChinaPark-Ohio Products, Inc.
    
    OhioPharmaceutical Logistics, Inc.
    
    OhioPharmacy Wholesale Logistics, Inc.
    
    OhioPKOH Corp.
    
    OhioPrecision Machining Connection LLC (2)
    
    OhioPMC-Colinet, Inc.
    
    OhioRB&W Corporation of Canada
    
    OntarioRB&W Manufacturing LLC (3)
    
    OhioSnow Dragon LLC
    
    OhioSouthwest Steel Processing LLC
    
    OhioSupply
Technologies International Trading (Shanghai) Co. Ltd.
    
    ChinaSupply Technologies Company of Canada
    
    Nova ScotiaSupply Technologies Limited (Hong Kong)
    
    Hong KongSupply Technologies Limited (Scotland)
    
    ScotlandSupply Technologies LLC
    
    OhioSupply Technologies (NABS Ireland) Limited
    
    IrelandSupply Technologies (NY), Inc.
    
    New YorkSupply Technologies Pte. Ltd.
    
    SingaporeSupply Technologies (U.K.) Limited
    
    BirminghamEnglandSupply Technologies Kft.
    
    HungarySupply Technologies(India) Private Limited
    
    IndiaSupply
Technologies Company of Puerto Rico
    
    Puerto RicoThe Ajax Manufacturing Company (4)
    
    OhioTocco, Inc.
    
    AlabamaTW Manufacturing Co. (7)
    
    Ohio
 
 (1)
    
    Doing business as Park Drop Forge, Ohio Crankshaft and Park-Ohio Forged & Machined Products(2)
    
    Doing business as PMC Industries and M.P. Colinet(3)
    
    Doing business as Delo Screw Products, RB&W Manufacturing, and Sabina Mfg.(4)
    
    Doing business as Ajax Technologies and Forging Development(5)
    
    Doing business as Kropp Forge(6)
    
    Doing business as PMC-Colinet and PMC Industries(7)
    
    Doing business as  Production Pattern Company