Exhibit 21
W.W. GRAINGER, INC.
Subsidiaries and Affiliated Companies
(as of January 31, 2013)
| Subsidiaries (51% or more ownership) | ||
| Name of Company | Where Organized | |
| 779146 Canada Inc. | Canada | |
| Acklands - Grainger Inc. | Canada | |
| American Fabory Corporation | Delaware | |
| Beleggingsmij Maasoever Rotterdam B.V. | Netherlands | |
| BMF Finance B.V. | Netherlands | |
| BMF Fundco B.V. | Netherlands | |
| BMF Management Services B.V. | Netherlands | |
| BMFGH Holding B.V. | Netherlands | |
| BMFGH Manpar B.V. | Netherlands | |
| Borstlap International B.V. | Netherlands | |
| Combori N.V. | Belgium | |
| CV Noordoever (85%) | Netherlands | |
| Dayton Electric Manufacturing Co. | Illinois | |
| Dutch Industrial Fasteners B.V. | Netherlands | |
| Fabory Asia B.V. | Netherlands | |
| Fabory Bulgaria EOOD | Bulgaria | |
| Fabory Canada Inc. | Canada | |
| Fabory Centres Belgium N.V. | Belgium | |
| Fabory CZ Holding S.R.O. | Czech Republic | |
| Fabory France S.A. | France | |
| Fabory Industrial Services B.V. | Netherlands | |
| Fabory Kötoelem Kereskedelmi KFT | Hungary | |
| Fabory Masters in Fasteners Group B.V. | Netherlands | |
| Fabory Nederland B.V. | Netherlands | |
| Fabory Overseas Holding B.V. | Netherlands | |
| Fabory Poland SPZOO | Poland | |
| Fabory Portugal Lda. | Portugal | |
| Fabory Shanghai Co. Ltd. | China | |
| Fabory Slovakia SRO | Slovakia | |
| Fabory Spain S.L. | Spain | |
| Fabory Special Projects B.V. | Netherlands | |
| Fabory SRL | Romania | |
| Fabory UK Holdings Ltd. | United Kingdom | |
| Fabory UK Ltd. | United Kingdom | |
| Fabory U.S.A., Ltd. | Delaware | |
| FFSA S.A. | France | |
| Fixbolt (Suhzou) Co., Ltd. Taicang | China | |
| Fixbolt B.V. | Netherlands | |
| GHC Specialty Brands, LLC | Wisconsin | |
| GMMI LLC | Delaware | |
| Grainger Asia Pacific K.K. | Japan | |
| Grainger Brasil Comércio e Distribuição Ltda. | Brazil | |
| Grainger Brasil Participacoes Ltda. | Brazil | |
| Grainger Canada Holdings ULC | Canada | |
| Grainger Caribe, Inc. | Illinois | |
| Grainger China LLC | China | |
| Grainger Colombia Holding Company, LLC | Delaware | |
| Grainger Colombia S.A.S. (80%) | Colombia | |
| Grainger Dominicana SRL | Dominican Republic | |
| Grainger Global Holdings, Inc. | Delaware | |
| Grainger Global Trading (Shanghai) Company Limited | China | |
| Grainger India Private Limited | India | |
| Grainger Industrial MRO de Costa Rica, S.R.L. | Costa Rica | |
| Grainger Industrial Supply India Private Limited | India | |
| Grainger International Holdings B.V. | Netherlands | |
| Grainger International, Inc. | Illinois | |
| Grainger Japan Holdings, Inc. | Delaware | |
| Grainger Japan, Inc. | Delaware | |
| Grainger Latin America Holding Company, Inc. | Delaware | |
| Grainger Management LLC | Illinois | |
| Grainger Mexico LLC | Delaware | |
| Grainger Panama S.A. | Panama | |
| Grainger Panama Services S. de R.L. | Panama | |
| Grainger Peru S.R.L. | Peru | |
| Grainger Registry Services, LLC | Delaware | |
| Grainger Safety Services, Inc. | Delaware | |
| Grainger Service Holding Company, Inc. (d/b/a Grainger Lighting Services | Delaware | |
| Grainger Services International Inc. | Illinois | |
| Grainger Services Network, Inc. | Delaware | |
| Grainger Trinidad, Inc. | Delaware | |
| Grainger, S.A. de C.V. | Mexico | |
| GWW Investments C.V. | Netherlands | |
| Hamos België BVBA | Belgium | |
| Hamos Holland B.V. | Netherlands | |
| Imperial Supplies Holdings, Inc. | Delaware | |
| Imperial Supplies LLC | Delaware | |
| Inbema N.V. | Curaçao Netherlands Antilles | |
| India Pacific Brands | Mauritius | |
| Klaassen Fasteners B.V. | Netherlands | |
| Klaassen Fasteners BVBA | Belgium | |
| LN Participacoes Ltda. | Brazil | |
| Metric Fasteners Corporation | Delaware | |
| MonotaRO Co., Ltd. (52.42%) | Japan | |
| Mountain Ventures WWG III, LLC | Delaware | |
| Mountain Ventures WWG IV, LLC | Delaware | |
| Mountain Ventures WWG V, LLC | Delaware | |
| Mountain Ventures WWG VI, LLC | Delaware | |
| Mountain Ventures WWG, LLC | Delaware | |
| Mountain Ventures WWG, VII, LLC | Delaware | |
| MRO Soluciones, S.A. de C.V. | Mexico | |
| Pimentel Fasteners B.V. | Netherlands | |
| Pro Tool Point Supply, Inc. | Illinois | |
| PSS West, Inc. | California | |
| Safety Registry Services, LLC | Delaware | |
| Solus Sécurité Inc. | Canada | |
| Techni-Tool, Inc. | Pennsylvania | |
| WEX WWG VIII, LLC | Delaware | |
| WWG de Mexico, S.A. de C.V. | Mexico | |
| WWG International Finance C.V. | Netherlands | |
| WWG Servicios, S.A. de C.V. | Mexico | |
| WWGH LLC | Delaware | |
| Zoro Tools, Inc. | Delaware | |
| Affiliates (50% and less ownership) | ||
| Name of Company | Where Organized | |
| Sterling Fabory India Private Ltd. (50%) | India | |