204 Series - Dimcogray recessed top fluted knob
| Part N° | Material | Unit system | Fastening gender | A | B | C | D | Thread length | Thread size |
| 1-204-001 | Phenolic | Imperial | Female | 2-3/8 | 1-1/8 | 1-1/4 | 5/8 | 1/2 | 3/8-16 |
| 1-204-018 | Phenolic | Imperial | Female | 2-3/8 | 1-1/8 | 1-1/4 | 5/8 | 5/8 | 1/2-20 |
| 1-204-023 | Phenolic | Imperial | Male | 2-3/8 | 1-1/8 | 1-1/4 | 5/8 | 1-1/2 | 3/8-16 |
| 1-204-026 | Phenolic | Imperial | Female | 2-3/8 | 1-1/8 | 1-1/4 | 5/8 | 1-7/8 | 5/8 |