This knob is in reinforced duroplast, high-gloss finish. Standard color black.
Fastening, nickel plated brass insert.
Optimum utilisation between –50° and 155° Celsius, outstanding resistance to chemicals, oil as well as tough climatic conditions.

Knob knurled with internal thread
| D | d | H | D2 | h | h1 | h2 | Reference | g | Pack |
| 18 | M4 | 13 | 10 | 9 | 4 | 5 | 4301 | 10 | 10 pcs |
| 24 | M5 | 16 | 13 | 10 | 6 | 7 | 4302 | 15 | 10 pcs |
| 30 | M6 | 18 | 15 | 11 | 7 | 7 | 4303 | 25 | 10 pcs |
| 35 | M8 | 19 | 18 | 11 | 8 | 7 | 4304 | 30 | 10 pcs |
| 35 | M10 | 19 | 18 | 11 | 8 | 7 | 4305 | 30 | 10 pcs |