Five-lobed control knobs EN 5338 are very appealing with a nice gripping feel. The manufacturing technique has made it possible to produce them with no visible flash mark.
The pointer element is pressed into a groove on the hand knob hub which secures it from twisting.
Two socket set screws with serrated points ensure a secure attachment to the shaft.
Specification
Knob
Plastic, Phenolic (PF)
Operating temperature
-4 °F to +230 °F (-20 °C to +110 °C)
Black, shiny finish
Pointer
Plastic, Polyamide (PA)
Operating temperature
-4 °F to +230 °F (-20 °C to +110 °C)
Black, shiny finish
Arrow for type S
in white design
Insert
d1 = 32, 40 mm: Brass
d1 = 50, 60, 70 mm: Steel, blackened finish
Set screw DIN 916
Stainless steel
with internal hex and serrated point