228 Series - Dimcogray round knurled knob
| Part N° | Material | Unit system | Fastening gender | A | B | C | D | Thread length | Thread size |
| 1-228-001 | Phenolic | Imperial | Female | 1-3/8 | 25/32 | 3/4 | 3/8 | 5/16 | 10-32 |
| 1-228-104 | Phenolic | Imperial | Male | 1-3/8 | 25/32 | 3/4 | 3/8 | 5/8 | 10-32 |
| 1-228-107 | Phenolic | Imperial | Male | 1-3/8 | 25/32 | 3/4 | 3/8 | 1 | 3/8-16 |
| 1-228-145 | Phenolic | Imperial | Male | 1-3/8 | 25/32 | 3/4 | 3/8 | 1-1/4 | 5/16-24 |
| 1-228-159 | Phenolic | Imperial | Male | 1-3/8 | 25/32 | 3/4 | 3/8 | 2 | 5/16-24 |
| 1-228-180 | Phenolic | Imperial | Male | 1-3/8 | 25/32 | 3/4 | 3/8 | 2.3125 | 3/8-16 |
| 1-228-601 | Phenolic | Metric | Female | 1-3/8 | 25/32 | 3/4 | 3/8 | 7/16 | M8-1.25 |
| 2-228-068 | Phenolic | Imperial | Female | 1-3/8 | 25/32 | 3/4 | 3/8 | 15/32 | 1/4 |
| 2-228-166 | Phenolic | Imperial | Female | 1-3/8 | 25/32 | 3/4 | 3/8 | 1/2 | 5/16 |
| 2-228-202 | Phenolic | Imperial | Female | 1-3/8 | 25/32 | 3/4 | 3/8 | 7/16 | 3/8-16 |
| 2-228-222 | Phenolic | Imperial | Female | 1-3/8 | 25/32 | 3/4 | 3/8 | 7/16 | 3/16 |
| 2-228-301 | Phenolic | Imperial | Female | 1-3/8 | 25/32 | 3/4 | 3/8 | 7/16 | 1/4-20 |
| 2-228-302 | Phenolic | Imperial | Male | 1-3/8 | 25/32 | 3/4 | 3/8 | 3/4 | 3/8-16 |
| 2-228-303 | Phenolic | Imperial | Female | 1-3/8 | 25/32 | 3/4 | 3/8 | 7/16 | 5/16-18 |
| 2-228-307 | Phenolic | Imperial | Male | 1-3/8 | 25/32 | 3/4 | 3/8 | 1/2 | 5/16-18 |
| 2-228-308 | Phenolic | Imperial | Male | 1-3/8 | 25/32 | 3/4 | 3/8 | 3/4 | 1/4-20 |
| 2-228-309 | Phenolic | Imperial | Male | 1-3/8 | 25/32 | 3/4 | 3/8 | 1 | 3/8-16 |
| 2-228-310 | Phenolic | Imperial | Male | 1-3/8 | 25/32 | 3/4 | 3/8 | 3/4 | 5/16-18 |
| 2-228-312 | Phenolic | Imperial | Female | 1-3/8 | 25/32 | 3/4 | 3/8 | 7/16 | 5/16-24 |
| 2-228-315 | Phenolic | Imperial | Male | 1-3/8 | 25/32 | 3/4 | 3/8 | 1-1/4 | 1/4-20 |
| 2-228-317 | Phenolic | Imperial | Female | 1-3/8 | 25/32 | 3/4 | 3/8 | 3/8 | 1/4-20 |
| 2-228-322 | Phenolic | Imperial | Male | 1-3/8 | 25/32 | 3/4 | 3/8 | 1/2 | 1/4-20 |
| 2-228-326 | Phenolic | Imperial | Male | 1-3/8 | 25/32 | 3/4 | 3/8 | 2 | 1/4-20 |
| 2-228-331 | Phenolic | Imperial | Male | 1-3/8 | 25/32 | 3/4 | 3/8 | 2 | 5/16-18 |
| 2-228-339 | Phenolic | Imperial | Male | 1-3/8 | 25/32 | 3/4 | 3/8 | 1-1/2 | 5/16-18 |
| 2-228-347 | Phenolic | Imperial | Male | 1-3/8 | 25/32 | 3/4 | 3/8 | 1 | 1/4-20 |
| 2-228-348 | Phenolic | Imperial | Male | 1-3/8 | 25/32 | 3/4 | 3/8 | 5/8 | 5/16-18 |
| 2-228-357 | Phenolic | Imperial | Male | 1-3/8 | 25/32 | 3/4 | 3/8 | 1-1/2 | 1/4-20 |
| 2-228-372 | Phenolic | Imperial | Male | 1-3/8 | 25/32 | 3/4 | 3/8 | 7/8 | 3/8-16 |
| 2-228-385 | Phenolic | Imperial | Male | 1-3/8 | 25/32 | 3/4 | 3/8 | 1-1/2 | 3/8-24 |
| 2-228-394 | Phenolic | Imperial | Female | 1-3/8 | 25/32 | 3/4 | 3/8 | 7/16 | 3/8-24 |
| 2-228-395 | Phenolic | Imperial | Male | 1-3/8 | 25/32 | 3/4 | 3/8 | 3/8 | 1/4-20 |
| 2-228-600 | Phenolic | Metric | Female | 1-3/8 | 25/32 | 3/4 | 3/8 | 7/16 | M6-1.0 |