Additional product ranges

Principle

The reason why rustproof steels are resistant to corrosion is because their surface is coated with a very thin (2-5 nm) chromium oxide film. Due to potential differences in electrochemical activity, processed stainless steel is usually passivated. With Antiseize, the specific passivation is re-treated with a tailored non-electrolytic colloidal suspension, which produces a thin dry fluoropolymer-based lubricant. This means that the part can be assembled without the thread seizing.

The Antiseize coating minimises potential follow-up costs of a stainless steel threaded connection. The pre-coating is dry and non-slip. The colour is off-white and the coating thickness is between 5 and 20 µm. The temperature range is between -180°C and 260°C. Friction is also set to 0.12 – 0.18 µtot.

Benefits of the Antiseize coating:

• Simple assembly without galling
• Shorter assembly times
• No need for manual greasing
• Defined friction set to 0.12 – 0.18 µtot
• The pre-coating is dry and non-slip
• The pre-coated nuts are multi-use
• Unlimited shelf life

Currently DIN 934 nuts and DIN 985 self-locking nuts in A2 with the Antiseize coating according to B 53090 are available as standard from Böllhoff.

To achieve optimal joint design, the necessary tests can be carried out at Böllhoff’s accredited test laboratory.

Nuts with Antiseize coating according to B 53090

© Böllhoff Group, Bielefeld 2016

Reprint authorised.

Responsible author

Frank Nientiedt
Head of Corporate Marketing
at Wilhelm Böllhoff GmbH & Co. KG
Telefon +49 521 4482-01
Telefax +49 521 449364
E-Mail presse@boellhoff.com