298 Series - Dimcogray tapered handle knob
| Part N° | Material | Unit system | Fastening gender | A | B | C | Thread length | Thread size |
| 1-298-002 | Phenolic | Imperial | Female | 1 | 3 | 5/8 | 7/16 | 5/16-18 |
| 1-298-003 | Phenolic | Imperial | Female | 1 | 3 | 5/8 | 1-1/2 | 5/16-18 |
| 1-298-006 | Phenolic | Imperial | Female | 1 | 3 | 5/8 | 7/16 | 1/4-20 |
| 1-298-024 | Phenolic | Imperial | Female | 1 | 3 | 5/8 | 3/4 | 5/16-18 |
| 1-298-030 | Phenolic | Imperial | Female | 1 | 3 | 5/8 | 3/4 | 3/8-24 |
| 1-298-036 | Phenolic | Imperial | Female | 1 | 3 | 5/8 | 1-1/2 | .447 |