516 Series - Dimcogray recessed top knurled knob
| Part N° | Material | Unit system | Fastening gender | A | B | C | D | Thread length | Thread size |
| 3-516-001 | Thermoplastic | Imperial | Female | 3/4 | 15/32 | 5/8 | 7/32 | 5/16 | 6-32 |
| 3-516-002 | Thermoplastic | Imperial | Female | 3/4 | 15/32 | 5/8 | 7/32 | 5/16 | 8-32 |
| 3-516-003 | Thermoplastic | Imperial | Female | 3/4 | 15/32 | 5/8 | 7/32 | 5/16 | 10-32 |
| 3-516-004 | Thermoplastic | Imperial | Female | 3/4 | 15/32 | 5/8 | 7/32 | 5/16 | 1/4-20 |
| 3-516-007 | Thermoplastic | Imperial | Female | 3/4 | 15/32 | 5/8 | 7/32 | 5/16 | 10-24 |
| 3-516-015 | Thermoplastic | Imperial | Male | 3/4 | 15/32 | 5/8 | 7/32 | 1/2 | 1/4-20 |
| 3-516-019 | Thermoplastic | Imperial | Female | 3/4 | 15/32 | 5/8 | 7/32 | 5/16 | 5/16-18 |
| 3-516-027 | Thermoplastic | Imperial | Male | 3/4 | 15/32 | 5/8 | 7/32 | 1/4 | 10-32 |
| 3-516-601 | Thermoplastic | Metric | Female | 3/4 | 15/32 | 5/8 | 7/32 | 5/16 | M4-.7 |
| 4-516-006 | Thermoplastic | Imperial | Male | 3/4 | 15/32 | 5/8 | 7/32 | 3/8 | 8-32 |
| 4-516-007 | Thermoplastic | Imperial | Male | 3/4 | 15/32 | 5/8 | 7/32 | 9/16 | 8-32 |