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Thread reinforcement

KOBSERT®

Highly stressable and wear-free. With KOBSERT® thread inserts in metallic materials.

Contents
 

Thread reinforcement for metals

KOBSERT® thread inserts are designed for creating vibration-resistant and torsion-proof nut threads in metal materials with low shear strength.

Clever mechanics, easy use. Whenever stringent demands are made on the tight fit of a thread, KOBSERT® thread inserts ensure the necessary hold. In particular, metals with low shear strength such as aluminium and aluminium or magnesium alloys benefit from thread reinforcement.

This product is made by Böllhoff

Method / principle

KOBSERT® technology is suitable for thread reinforcement as well as for the repair of damaged threads. The threaded bush is mechanically anchored without additional securing pins or washers and without chemical adhesion or sealing materials. The version with a sealing ring is designed for gas and liquid-tight joints.

Applications

In the automotive industry KOBSERT® thread inserts are used for example in engine mounting parts, gear connections, oil drain plugs and towing eyes. Other industrial applications include refrigeration and air-conditioning technology, electrical engineering or agriculture and garden technology.

Product benefits
  • Highly resilient
  • Wear-resistant
  • Vibration-resistant and torsion-proof
  • Suitable for thread repair
  • Sealing (version with sealing ring)
  • Assembly systems, tools and products from a single source

Product gallery

KOBSERT® thread insert

KOBSERT®

Thread inserts for metals

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Product benefits

There are many good reasons for using our products.

Strength and options.
Point by point.

Highly resilient

KOBSERT® thread inserts create highly resilient joints in metal materials with low shear strength, e.g. aluminium and aluminium / magnesium alloys, including short screw-in depths.

Vibration-resistant and torsion-proof

Tight fit. The KOBSERT® thread insert is anchored mechanically without additional securing pins or washers and without chemical adhesion or sealing materials.

Suitable for thread repair

Turn old back into new. KOBSERT® thread inserts can also be used to repair damaged threads.

Effective seal

No way of getting through. The KOBSERT® thread insert with sealing ring ensures gas and liquid-tight joints.

Detailed description

 

Principle

When installing KOBSERT® thread inserts, the safety flange is pressed flatly into the surface of the workpiece. This reduces the pipe-shaped neck area below the safety flange and covers as far as the mounting thread. Following installation the thread inserts are reliably protected against unscrewing, even when the part is exposed to dynamic screw load or extreme temperatures. Setting also prevents thread backlash between the insert and the thread in order to minimise setting phenomena under load.

KOBSERT® thread insert

1) Component
2) KOBSERT® thread bush
3) Safety flange
4) Sealing ring
5) Compression zone
6) External thread
7) Internal thread

Material overview for sealing rings

 

Standard

  • NBR, e.g. PERBUNAN® 70 Sh A
  • Thermal stability: - 30°C to + 120°C
  • Colour coding: black


Optional

  • FKM, e.g. VITON® 75 Sh A
  • Thermal stability: - 20°C to + 200°C
  • Colour coding: green

Do you have any other requirements? Please feel free to contact us. 

Product variants

Every project deserves a tailor-made solution.

Learn more about the product types and find the right variant for your particular application.

Type 1030 (standard)
without sealing ring

The safety flange prevents the KOBSERT® thread insert from also rotating in the component during the tightening process. The insert is equipped with a through hole.

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Type 1031 (standard)
with sealing ring

The KOBSERT® thread insert with safety flange and through hole. The necessary seal is ensured by rings made either of NBR (supplied as standard) or FKM (for high temperature requirements).

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Type 1032
with sealing ring

This KOBSERT® version has a safety flange plus support washer. An advantage when seals need to be screwed on and securely tightened. The insert is equipped with a through hole. The necessary seal is ensured by rings made of NBR or FKM.

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Type 1033
with sealing ring

Any liquid media inside the component cannot leak out through the thread insert. Reliable sealing is ensured here by the safety flange and rings made of NBR or FKM.

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Type 1040
without sealing ring

High Power – With this KOBSERT® version, higher pull-out strengths are achieved. It also includes a safety flange and through hole.

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Type 1041
with sealing ring

High Power with effective seal. With this KOBSERT® version, higher pull-out strengths are achieved. In addition to the safety flange and through hole, it also offers the option of sealing via NBR or FKM rings.

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Details / eShop

Downloads

Find out more: related downloads.

If you would like to know more, simply download the relevant brochures.

Title Language Version File Download
KOBSERT®
Thread inserts for metals
English 01/2019 1902 kB / PDF
English 01/2019 1902 kb / PDF

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More information

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