255 Series - Dimcogray round push/pull knob
| Part N° | Material | Unit system | Fastening gender | A | B | C | D | Thread length | Thread size |
| 1-255-001 | Phenolic | Imperial | Female | 1-5/8 | 1 | 5/8 | 3/8 | 7/16 | 1/4-20 |
| 1-255-003 | Phenolic | Imperial | Female | 1-5/8 | 1 | 5/8 | 3/8 | 1/2 | 3/8-16 |
| 1-255-006 | Phenolic | Imperial | Female | 1-5/8 | 1 | 5/8 | 3/8 | 1/2 | 3/8-24 |
| 1-255-007 | Phenolic | Imperial | Female | 1-5/8 | 1 | 5/8 | 3/8 | 7/16 | 1/4-20 |
| 1-255-008 | Phenolic | Imperial | Female | 1-5/8 | 1 | 5/8 | 3/8 | 7/16 | 5/16-24 |
| 1-255-010 | Phenolic | Imperial | Female | 1-5/8 | 1 | 5/8 | 3/8 | 1/2 | 1/4 |