297 Series - Dimcogray tapered handle knob
| Part N° | Material | Unit system | Fastening gender | A | B | C | Thread length | Thread size |
| 1-297-006 | Phenolic | Imperial | Female | 1-1/8 | 4-1/4 | 3/4 | 7/16 | 5/16-18 |
| 1-297-015 | Phenolic | Imperial | Female | 1-1/8 | 4-1/4 | 3/4 | 2-3/16 | 1/2 |
| 1-297-017 | Phenolic | Imperial | Female | 1-1/8 | 4-1/4 | 3/4 | 5/8 | 3/8-16 |
| 1-297-020 | Phenolic | Imperial | Female | 1-1/8 | 4-1/4 | 3/4 | 2 | 3/8-16 |
| 1-297-029 | Phenolic | Imperial | Female | 1-1/8 | 4-1/4 | 3/4 | 1-5/8 | 5/16 |
| 1-297-030 | Phenolic | Imperial | Female | 1-1/8 | 4-1/4 | 3/4 | 2-5/32 | 1/2 |