| Year | Detail |
| 1912 |
Illinois Tool Works was launced. |
| 1920s |
ITW acquired Shakeproof Screw and Nut Lock Company. |
| 1930s |
ITW started selling Radio and Farm equipments. |
| 1940s |
Shakeproof and other divisons are split off as autonomus companies. |
| 1950s |
ITW formed Fastex and created ITW foundation. |
| 1960s |
Started production of Local radio stations. |
| 1970s |
The company acquired Devcon. |
| 1980s |
Over the decade ITW made 32 acquisitions. |
| 1990s |
ITW made 100 acquisitions throughout the decade and important acquisitions are Miller Electric Welding Co. and Premark International. |
| 2000s |
ITW expanded its business into Test & Measurement and Electronics segment. |
| 2010s |
ITW began implementing a company wide Enterprise Strategy. |