Brass MS add MS on order code (only in black version)
Plastic KT
Technopolymer (Polyamide PA)
Shock resistant
Black, matt finish
Red RT, similar RAL 3003: add RT on order code
Version in Steel
Type C: with tapped hole
Type K: with plain hole H7
Steel ST
Polished
Version in Aluminium
Type C: with tapped hole
Type K: with plain hole H7
Aluminium AL
Polished
Version in Stainless Steel
Type C: with tapped hole
Type K: with plain hole H7
Stainless Steel AISI 303 NI
Matt shot-blasted
Version in Plastic (Press on type)
Type L: with tolerance ring
Type M: with tapered bore
Type L
Plastic KU
Duroplast (Phenolic PF)
Black, shiny finish
Tolerance ring
Spring steel
Type M
Plastic KT
Technopolymer (Polyamide PA)
Shock resistant
Black, matt finish
Information
When ball knobs DIN 319 (Press on type) type L and M are used the shaft does not require a thread.
During mounting, easy blows with a soft hammer are sufficient to drive the knob into place, the shaft end should be slightly rounded or chamfered (30°).
Before the assembly of the knobs, type L the tolerance ring is to be inserted into the drilling.
Further it is to be noted that the button is put on perpendicular and / or axially parallel. Otherwise the knob may break.
Type M ball knobs are a cheaper solution, however, the pulling off force is less predictable.