289 Series - Dimcogray 4-prong pronged knob
| Part N° | Material | Unit system | Fastening gender | A | B | C | D | Thread length | Thread size |
| 2-289-300 | Phenolic | Imperial | Female | 2-1/4 | 1-1/8 | 1 | 9/16 | 7/16 | 5/16-18 |
| 2-289-301 | Phenolic | Imperial | Female | 2-1/4 | 1-1/8 | 1 | 9/16 | 1/2 | 3/8-16 |
| 2-289-302 | Phenolic | Imperial | Female | 2-1/4 | 1-1/8 | 1 | 9/16 | 1/2 | 3/8-24 |
| 2-289-303 | Phenolic | Imperial | Female | 2-1/4 | 1-1/8 | 1 | 9/16 | 5/8 | 1/2-13 |
| 2-289-304 | Phenolic | Imperial | Female | 2-1/4 | 1-1/8 | 1 | 9/16 | 5/8 | 1/2-20 |
| 2-289-305 | Phenolic | Imperial | Male | 2-1/4 | 1-1/8 | 1 | 9/16 | 1-1/2 | 3/8-16 |
| 2-289-306 | Phenolic | Imperial | Male | 2-1/4 | 1-1/8 | 1 | 9/16 | 1 | 3/8-16 |
| 2-289-307 | Phenolic | Imperial | Male | 2-1/4 | 1-1/8 | 1 | 9/16 | 2 | 3/8-16 |
| 2-289-308 | Phenolic | Imperial | Male | 2-1/4 | 1-1/8 | 1 | 9/16 | 1/2 | 1/4-20 |
| 2-289-311 | Phenolic | Imperial | Female | 2-1/4 | 1-1/8 | 1 | 9/16 | 7/16 | 1/4-20 |
| 2-289-312 | Phenolic | Imperial | Male | 2-1/4 | 1-1/8 | 1 | 9/16 | 1-3/4 | 3/8-16 |
| 2-289-317 | Phenolic | Imperial | Male | 2-1/4 | 1-1/8 | 1 | 9/16 | 3/4 | 1/4-20 |
| 2-289-320 | Phenolic | Imperial | Male | 2-1/4 | 1-1/8 | 1 | 9/16 | 2-1/2 | 1/2-13 |
| 2-289-321 | Phenolic | Imperial | Male | 2-1/4 | 1-1/8 | 1 | 9/16 | 2 | 1/2-13 |
| 2-289-322 | Phenolic | Imperial | Male | 2-1/4 | 1-1/8 | 1 | 9/16 | 1-1/2 | 1/2-13 |
| 2-289-332 | Phenolic | Imperial | Female | 2-1/4 | 1-1/8 | 1 | 9/16 | 15/32 | 1/4 |
| 2-289-335 | Phenolic | Imperial | Male | 2-1/4 | 1-1/8 | 1 | 9/16 | 3/4 | 3/8-16 |
| 2-289-338 | Phenolic | Imperial | Male | 2-1/4 | 1-1/8 | 1 | 9/16 | 1-1/4 | 3/8-16 |
| 2-289-341 | Phenolic | Imperial | Male | 2-1/4 | 1-1/8 | 1 | 9/16 | 2-1/2 | 3/8-16 |
| 2-289-343 | Phenolic | Imperial | Male | 2-1/4 | 1-1/8 | 1 | 9/16 | 1-1/2 | 5/16-18 |
| 2-289-345 | Phenolic | Imperial | Male | 2-1/4 | 1-1/8 | 1 | 9/16 | 1 | 5/16-18 |
| 2-289-348 | Phenolic | Imperial | Male | 2-1/4 | 1-1/8 | 1 | 9/16 | 2-1/4 | 5/16-18 |
| 2-289-351 | Phenolic | Imperial | Female | 2-1/4 | 1-1/8 | 1 | 9/16 | 1/2 | 3/8 |
| 2-289-354 | Phenolic | Imperial | Male | 2-1/4 | 1-1/8 | 1 | 9/16 | 1-1/4 | 1/4-20 |
| 2-289-357 | Phenolic | Imperial | Male | 2-1/4 | 1-1/8 | 1 | 9/16 | 1 | 1/2-13 |
| 2-289-358 | Phenolic | Imperial | Male | 2-1/4 | 1-1/8 | 1 | 9/16 | 3/4 | 1/2-13 |
| 2-289-361 | Phenolic | Imperial | Male | 2-1/4 | 1-1/8 | 1 | 9/16 | 3/4 | 5/16-18 |
| 2-289-362 | Phenolic | Imperial | Male | 2-1/4 | 1-1/8 | 1 | 9/16 | 1 | 1/2-20 |
| 2-289-389 | Phenolic | Imperial | Male | 2-1/4 | 1-1/8 | 1 | 9/16 | 2-7/8 | 3/8-16 |
| 2-289-396 | Phenolic | Imperial | Male | 2-1/4 | 1-1/8 | 1 | 9/16 | 2-7/16 | 5/16-18 |
| 2-289-402 | Phenolic | Imperial | Male | 2-1/4 | 1-1/8 | 1 | 9/16 | 2-1/2 | 1/4-20 |