This “Ergo” knob is in polyamid filled with microscopic glass beads, allowing for high-impact resistance and durability.
Standard color is black.
Fastening, insert is in brass, or zinc plated steel.
Optimum utilisation between -50 ° to 130 ° Celsius, Outstanding resistance to chemicals, oil as well as tough climatic conditions.

Knob “Ergo” with steel stud
| ▲ Standard length of stud L | |||||||||||
| D1 | D | 8 | 10 | 15 | 20 | 25 | 30 | 40 | Reference | Pack | |
| 28 | M4 | ▲ | 8303-** | 5 | 20 pcs | ||||||
| 28 | M5 | ▲ | ▲ | ▲ | 8304-** | 5/8 | 20 pcs | ||||
| 28 | M6 | ▲ | ▲ | ▲ | ▲ | ▲ | 8305-** | 5/10 | 20 pcs | ||
| 28 | M8 | ▲ | ▲ | ▲ | ▲ | 8306-** | 5/15 | 20 pcs | |||
| **Please fill in the length of stud L, example: 830420 for L: 20 mm. | |||||||||||