283 Series - Dimcogray oval knob
| Part N° | Material | Unit system | Fastening gender | A | B | C | Thread length | Thread size |
| 2-283-300 | Phenolic | Imperial | Female | 2-1/32 | 1-1/2 | 3/4 | 7/16 | 5/16-18 |
| 2-283-302 | Phenolic | Imperial | Female | 2-1/32 | 1-1/2 | 3/4 | 1/2 | 3/8-16 |
| 2-283-303 | Phenolic | Imperial | Female | 2-1/32 | 1-1/2 | 3/4 | 1/2 | 3/8-24 |
| 2-283-304 | Phenolic | Imperial | Female | 2-1/32 | 1-1/2 | 3/4 | 7/16 | 1/4-20 |
| 2-283-310 | Phenolic | Imperial | Male | 2-1/32 | 1-1/2 | 3/4 | 3/8 | 1/4-28 |
| 2-283-311 | Phenolic | Imperial | Female | 2-1/32 | 1-1/2 | 3/4 | 5/8 | 1/2-13 |
| 2-283-315 | Phenolic | Imperial | Female | 2-1/32 | 1-1/2 | 3/4 | 5/8 | 3/8-24 |
| 2-283-318 | Phenolic | Imperial | Female | 2-1/32 | 1-1/2 | 3/4 | 5/8 | 1/2-13 |
| 2-283-329 | Phenolic | Imperial | Female | 2-1/32 | 1-1/2 | 3/4 | 5/8 | 1/4-20 |
| 2-283-330 | Phenolic | Imperial | Female | 2-1/32 | 1-1/2 | 3/4 | 5/8 | 5/16-24 |
| 2-283-331 | Phenolic | Imperial | Female | 2-1/32 | 1-1/2 | 3/4 | 5/8 | 5/16-18 |
| 2-283-332 | Phenolic | Imperial | Female | 2-1/32 | 1-1/2 | 3/4 | 1/2 | 3/8-16 |
| 2-283-334 | Phenolic | Imperial | Female | 2-1/32 | 1-1/2 | 3/4 | 5/8 | 3/8-16 |
| 2-283-335 | Phenolic | Imperial | Male | 2-1/32 | 1-1/2 | 3/4 | 1 | 1/4-20 |
| 2-283-601 | Phenolic | Metric | Female | 2-1/32 | 1-1/2 | 3/4 | 7/16 | M6-1.0 |
| 2-283-602 | Phenolic | Metric | Female | 2-1/32 | 1-1/2 | 3/4 | 15 | M12-1.75 |
| 2-283-603 | Phenolic | Metric | Female | 2-1/32 | 1-1/2 | 3/4 | 1/2 | M10-1.5 |