Shafts: Steel, zinc plated, blue passivated finish
Knobs: Black phenolic plastic
(Duroplast PF), black shiny finish, screwed on
Type A - with ball knob
Type D - with domed knob
Type E - with cylindrical knob
||Call our sales staff for pricing and delivery on your
The choice of knobs can be made dependent
function and/or their modern design.
Split hubs, see GN 150.
Maximum heat resistance of
phenolic plastic: 150°C (300°F).
For certain minimum
quantities, inch size threads, special
threads and shaft
lengths are available upon request.