259 Series - Dimcogray tapered knob knob
| Part N° | Material | Unit system | Fastening gender | A | B | C | Thread length | Thread size |
| 1-259-001 | Phenolic | Imperial | Female | 1-5/8 | 2-1/2 | 7/8 | 7/16 | 5/16-18 |
| 1-259-002 | Phenolic | Imperial | Female | 1-5/8 | 2-1/2 | 7/8 | 1/2 | 3/8-16 |
| 1-259-003 | Phenolic | Imperial | Female | 1-5/8 | 2-1/2 | 7/8 | 1/2 | 3/8-24 |
| 1-259-006 | Phenolic | Imperial | Female | 1-5/8 | 2-1/2 | 7/8 | 5/8 | 1/2-13 |
| 1-259-009 | Phenolic | Imperial | Female | 1-5/8 | 2-1/2 | 7/8 | 5/8 | 1/2-20 |
| 1-259-024 | Phenolic | Imperial | Female | 1-5/8 | 2-1/2 | 7/8 | 5/8 | 1/2-13 |
| 1-259-026 | Phenolic | Imperial | Female | 1-5/8 | 2-1/2 | 7/8 | 3/4 | 7/16-14 |
| 1-259-028 | Phenolic | Imperial | Female | 1-5/8 | 2-1/2 | 7/8 | 3/4 | 1/2 |
| 1-259-031 | Phenolic | Imperial | Female | 1-5/8 | 2-1/2 | 7/8 | 5/8 | 5/8-11 |
| 1-259-032 | Phenolic | Imperial | Female | 1-5/8 | 2-1/2 | 7/8 | 1/2 | 7/16-20 |
| 1-259-034 | Phenolic | Imperial | Female | 1-5/8 | 2-1/2 | 7/8 | 3/4 | 3/8-16 |
| 1-259-039 | Phenolic | Imperial | Female | 1-5/8 | 2-1/2 | 7/8 | 7/16 | 1/4-20 |
| 1-259-603 | Phenolic | Metric | Female | 1-5/8 | 2-1/2 | 7/8 | 1/2 | M10-1.5 |