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About Keyway Broaches
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Shims for Keyway Broaches
When broaching in multiple passes, shims are necessary to ensure full keyway depth. Slide them between the broach and bushing to set the depth of the keyway.
Note: Broaches have a style designation of A, B, B1, C, D, E, or F. For proper fit, broaches, bushings, and shims used together must have the same letter designation.
| For Keyway Wd. | For Broach Style | Thick. | Overall Lg. | Material | Each | |
| 1/8" | A | 0.0310" | 1 1/4" | Steel | 0000000 | 00000 |
| 1/8" | B | 0.0310" | 1 13/16" | Steel | 0000000 | 0000 |
| 5/32" | B | 0.0420" | 1 13/16" | Steel | 0000000 | 0000 |
| 3/16" | B | 0.0500" | 1 13/16" | Steel | 0000000 | 0000 |
| 3/16" | C | 0.0500" | 2 11/16" | Steel | 0000000 | 0000 |
| 1/4" | C | 0.0625" | 2 11/16" | Steel | 0000000 | 0000 |
| 5/16" | C | 0.0550" | 2 11/16" | Steel | 0000000 | 0000 |
| 5/16", 7/16" | D | 0.0560" | 6 1/4" | Steel | 0000000 | 0000 |
| 3/8" | C | 0.0625" | 2 11/16" | Steel | 0000000 | 0000 |
| 3/8" | D | 0.0625" | 6 1/4" | Steel | 0000000 | 0000 |
| 1/2" | D | 0.0625" | 6 1/4" | Steel | 0000000 | 0000 |
| 9/16" | D | 0.0560" | 6 1/4" | Steel | 00000000 | 0000 |
| 5/8", 3/4" | E | 0.0625" | 6 3/4" | Steel | 0000000 | 0000 |
| 7/8" | F | 0.0625" | 8 1/2" | Steel | 00000000 | 0000 |
| 1" | F | 0.0625" | 8 1/2" | Steel | 00000000 | 0000 |
| 3mm | A | 0.0310" | 1 1/4" | Steel | 0000000 | 0000 |
| 4mm | B1 | 0.0380" | 1 13/16" | Steel | 0000000 | 0000 |
| 5mm | B1 | 0.0500" | 1 13/16" | Steel | 0000000 | 0000 |
| 5mm | C | 0.0470" | 2 11/16" | Steel | 0000000 | 0000 |
| 6mm | C | 0.0625" | 2 11/16" | Steel | 0000000 | 0000 |
| 7mm | C | 0.0625" | 2 11/16" | Steel | 00000000 | 0000 |
| 8mm | C | 0.0500" | 2 11/16" | Steel | 0000000 | 0000 |
| 10mm, 12mm | D | 0.0560" | 6 1/4" | Steel | 0000000 | 0000 |
| 14mm | D | 0.0625" | 6 1/4" | Steel | 0000000 | 0000 |
| 16mm, 18mm | E | 0.0560" | 6 3/4" | Steel | 0000000 | 0000 |
| 20mm | F | 0.0625" | 8 1/2" | Steel | 00000000 | 0000 |
| 22mm | F | 0.0560" | 8 1/2" | Steel | 00000000 | 0000 |
| 24mm | F | 0.0625" | 8 1/2" | Steel | 00000000 | 0000 |
| 25mm | F | 0.0560" | 8 1/2" | Steel | 00000000 | 0000 |