Top Hat Control Knob with Collet Fixing
Top Hat Control Knob with Collet Fixing
This distinctive top hat control knob features a unique cylindrical design with a flat circular skirt at its base and a removable top cap. The knob's straight-sided body provides a comfortable grip surface, whilst the prominent flat cap at the top houses the clamping mechanism. To secure the knob to a shaft, simply remove the top cap to access the internal collet system, which tightens with a screw to create a firm grip on round shafts.
The knob's most notable visual feature is the square position indicator located on the outer edge of the base skirt, providing clear positional feedback during operation. This design makes it particularly well-suited for applications requiring precise control and clear visual reference, such as audio equipment, test instruments, and control panels where accurate positioning is essential. The collet fixing system accommodates slight variations in shaft diameter whilst maintaining a secure connection.
| Quantity | Unit Price |
|---|---|
| 1+ | £0.65 |
| 5+ | £0.52 |
| 10+ | £0.455 |
| 20+ | £0.39 |
| 50+ | £0.325 |
| 100+ | £0.26 |
Couldn't load pickup availability
Fitting
| Knob Type | Rotary |
|---|---|
| Shaft Type | Round |
| Shaft Fixing | Clamp |
| Hole Size | 4mm |
Appearance
| Identity Colour | Black |
|---|---|
| Body Colour | Black |
| Accent Colour | |
| Position Indicator Colour | White |
| Position Indicator Shape | Square |
Measurements
| Minimum Shaft Depth | 3.0mm |
|---|---|
| Maximum Shaft Depth | 7.0mm |
| Body Diameter | 12.1mm |
| Maximum Diameter | 16.8mm |
| Width | mm |
| Length | mm |
| Height | 15.9mm |
| Additional Measurements | |
| Unit Weight | 2.66g |
Hole Type
Round Hole
A knob designed for a round shaft has a smooth, cylindrical hole that matches the shaft's shape. This type of hole allows the knob to slide easily onto the shaft, relying on a grub screw / set screw or friction to keep it in place. This design is widely used in audio equipment, consumer electronics, and control panels due to its simplicity and versatility
A knob with a round hole can typically also be used on a D type shaft in the 180° position (where the position indicator is opposite to the flat of the D) and can often also be mouned to splined shafts in low torque applications.
A View from the underside of the knob when fitting a round hole knob to a D shaft, showing the grub screw position relative to the position indicator:
