| Darling Bolt Company |
|
| Dayco Industrial Products | |
| Del City Wire Company | |
| Diamond Spring Company | |
| Diamond Saw Company | |
| Dixon Valve Company |
|
| Dixie Industries | |
| Dormer Tools | |
| Durham Manufacturing Company | |
| Earnest Machine Products Co | |
| Edison Fuse Company |
 |
| Edward W. Daniel Company | |
| F.K. Bearings, Inc. | |
| Fullerton Tool Company | |
| FYH Bearing Company |
