Three-arm knobs

Soft-touch technopolymer


Three-arm knobs
Brass boss, threaded blind hole


Three-arm knobs
Zinc-plated steel threaded stud


Three-arm knobs
Stainless steel boss, threaded blind hole


Three-arm knobs
Brass boss, threaded blind hole


Glass-fibre reinforced polyamide based (PA) technopolymer, coated "soft-touch" thermoplastic elastomer (TPE) chemically bonded, hardness 70 Shore A, black colour, matte finish.

Coloured centre cap

Polyamide based (PA) technopolymer, in the standard colours, semi-glossy finish.

Standard executions

  • VB.839-B-SOFT: brass boss, threaded blind hole.
  • VB.839-SST-SOFT: AISI 303 stainless steel boss, threaded blind hole.
  • VB.839-p-SOFT: zinc-plated steel threaded stud, chamfered flat end according to UNI 947 : ISO 4753 (see Technical data).


The soft coating makes it more comfortable to use even in the presence of humidity and is particularly useful in the case of prolonged use or in the presence of disabilities as well as allowing greater tightening torque.

The three-arm shape is particularly ergonomic.

Product Design: The product design associated with the soft coating gives the machinery to which it is applied an air of quality and refinement.

Special executions on request

  • Three-arm knobs with AISI 304 stainless steel metal parts.
  • Cap in other colours or with customised graphic symbols, marks or writings.


Feeling overwhelmed with what product to choose?

Don’t delay, give OIC a call and talk to us about your industrial application. Our aim is to help your business choose the right Elesa+Ganter element for the function you need. Whether you need to clamp, close, connect, control, level, manoeuvre, measure or set. OIC has an Elesa+Ganter machine element to fit your need.

We want to find out about your industrial application need and where we can help. Our contact details are below.