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  1. Böllhoff China
  2. Products
  3. Special fasteners
  4. Repair solutions

Thread repair

Repair solutions

For defective threads, thin-walled components and in the high temperature range

Repair solutions Downloads
Thread repair HELICOIL®

Easy – Clever – Quick

Why replace components when you can repair them?

Turning old back into new. Our various repair solutions are a high-quality alternative. Easy, quick and significantly improved. With a repair, you save money and also protect the environment.

Method and principle

Thread repair with HELICOIL®

Excessive bolting torque, corrosion and even wear – these are just some of the reasons for thread damage.
HELICOIL® Plus thread inserts come in a variety of designs for quick thread repair. Using non-wearing HELICOIL® Plus thread inserts not only repairs threads but also increases the load capacity of the thread.

The process is very simple:

Simply drill out the defective thread and use the combined HELICOIL® Plus drilling and tapping tool to cut a new holding thread. You can then install the HELICOIL® Plus using the installation mandrel provided for this purpose. Now all you need to do is break off the tang using the tang break-off mandrel and the new thread with the HELICOIL® Plus thread insert is ready for use.

HELICOIL® thread insert on an installation mandrel
HELICOIL® thread insert on an installation mandrel

HELICOIL® locknuts for exhaust manifold and turbocharger attachments

It is well known that screw joints tend to work loose under load. In many applications, especially in the Automotive sector, it is absolutely necessary to take precautions against unintentional loosening. As a specialist in joining and assembly technology, we offer HELICOIL® locking nuts for these applications. An efficient combination of two fasteners: high-strength nut plus HELICOIL® Screwlock thread insert. These ideally designed fasteners are a perfect match, providing considerable advantages for screw joints with high requirements. We offer a collar nut version of the HELICOIL® locknutswith integrated washer, specifically intended for securely fastening exhaust manifolds.

HELICOIL® locknuts for attaching exhaust manifolds and turbochargers
HELICOIL® locknuts for attaching exhaust manifolds and turbochargers

Repair solutions for thin-walled components

RIVKLE® Blind rivet nuts

These are used where threads are required on thin-walled components. RIVKLE® Blind rivet nuts also ensure stronger threads. Typical applications include number plate attachments and repairs of defective threads for motorcycle frames.

RIVKLE® stainless steel – blind rivet nuts made of stainless steel
RIVKLE® stainless steel

RIVQUICK® Blind rivets

RIVQUICK® technology has proven to be a reliable method for the non-detachable joining of thin-walled components using blind rivets. It is also perfect for joining components that are only accessible from one side. No heat is generated during the installation of these blind rivets, so there is no distortion. They are also easy to use in layered components.

RIVQUICK® – Standard blind rivet
RIVQUICK® standard blind rivet

Any questions?

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Do you want to know more about our products or services? Our team will be happy to advise you.

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Find the right solution for your application

HELICOIL®

HELICOIL® kits make it easy to repair defective threads in just a few steps. The kits are compact and tailored to your needs.

  • HELICOIL® Kit – Lambda probe threads

    Contents

    • 5 HELICOIL® Plus thread inserts
    • HSS hand tap with guide tang
    • Installation mandrel
    • Hexagon key SW 2.5
    • Tool adapter for 3/8" tool ratchet

  • HELICOIL® Kit – Oil drain threads

    Oil changes are generally easy. But they become expensive and time-consuming if the oil drain thread is damaged. The alternative to replacing the oil pan or using an oversized thread is to use HELICOIL® Plus for thread repair.

    Contents

    • 10 HELICOIL® Plus thread inserts of each size in three lengths
    • Combined drilling and tapping tool
    • Hand tap (for interfering contours)
    • Installation mandrel, tang breaker, calliper

  • HELICOIL® Kit – Injector screw thread

    Injectors have to be cleaned or replaced. We offer a HELICOIL® Plus kit specially designed for repairing the holding threads for removed or torn-off injector screws.

    Contents

    • 20 HELICOIL® Plus thread inserts of each size
    • Core hole drill bit 6.3 mm
    • M6 thread drill bit, 5H, 45°, spiral
    • M6 special installation mandrel

  • HELICOIL® Kit – Spark and glow plug threads

    Due to its complicated production process, the cylinder head – along with the engine – is one of the most complex and expensive components on a motor vehicle. You can rely on our special HELICOIL® Plus kits for spark and glow plugs.

    Contents

    • 10 HELICOIL® Plus thread inserts of each size
    • Combined drilling and tapping tool
    • Installation mandrel

  • HELICOIL® Kit – Wheel bolt threads

    When changing tires, the nut thread is often damaged by incorrectly screwing in or over-tightening the wheel bolt. The HELICOIL® Plus kit for nut threads on wheel hubs provides the solution. After a new holding thread has been created, a high-strength HELICOIL®  thread insert is installed.

    Contents

    • 10 HELICOIL® Plus thread inserts
    • Combined drilling and tapping tool (special design)
    • Tang breaker
    • Caulking tool

  • HELICOIL® Kit – Wheel bearing threads

    In addition to dynamic loads, wheel bearing housings are also exposed to high temperatures, spray water and road salt. Wear and tear are inevitable. You can use HELICOIL® Plus to repair defective threads on wheel bearing housings.

    Contents

    • 10 HELICOIL® Plus thread inserts
    • Combined drilling and tapping tool
    • Installation mandrel
    • Tang break-off mandrel

  • HELICOIL® Kit

    Contents

    • HELICOIL® Plus thread inserts
    • Spiral drill (up to M12)
    • HSS hand tap
    • Installation mandrel
    • Tang breaker (up to M12)

    *Each kit consists of one size of thread insert in three different lengths.

  • HELICOIL® Kit

    Contents

    • HELICOIL® Plus thread inserts
    • Hand tap
    • Installation mandrel (M18 to M24 standard pitch)
    • Installation tool (M27 to M33 standard screw head and M18 x 1.5 to M36 x 1.5 fine thread pitch)

    *Each kit consists of one size of thread insert in one length

  • HELICOIL® Kit

    Contents

    • HELICOIL® Plus thread inserts in different sizes and lengths
    • Spiral drill up to M12 (with combined drilling and tapping tool for M14 x 1.25)
    • HSS hand tap
    • Installation mandrels
    • Tang breaker

HELICOIL® locknuts

An efficient combination of flange nut with integrated washer and HELICOIL® Plus Screwlock thread insert. Specifically intended for attaching exhaust manifolds and turbochargers.

  • HELICOIL® locknuts

    We offer a collar nut version of the HELICOIL® locknutswith integrated washer, specifically intended for securely fastening exhaust manifolds.

     

    Design variants

    • M8 nut with hexagon head
    • M8 nut with triple-square drive

    Applications

    • Exhaust manifolds
    • Axles and motors
    • Turbochargers

    Contents

    • 50 locknuts of each size

RIVKLE® and RIVQUICK®

These repair kits make it easy to set blind rivet nuts and blind rivets on thin-walled components.

  • RIVKLE® Plus Kit – Thin head

    The RIVKLE® Plus kit contains 50 RIVKLE® Plus blind rivet nuts with thin head of each size (M3, M4, M5 and M6) and the RIVKLE® BRK 01 setting tool for manual installation.

    Contents

    • RIVKLE® Plus blind rivet nuts M3 to M6
    • Steel, zinc-plated
    • Thin head
    • BRK 01 setting tool
    • Additional mandrels and nose pieces for M3, M4, M5 and M6

  • RIVKLE® Plus Kit – Flat head

    The RIVKLE® Plus kit contains 50 RIVKLE® Plus blind rivet nuts with flat head of each size (M4, M5 and M6) and the RIVKLE® BRK 01 setting tool for manual installation.

    Contents

    • RIVKLE® Plus blind rivet nuts M4 to M6
    • Steel, zinc-plated
    • Flat head
    • BRK 01 setting tool
    • Additional mandrels and nose pieces for M3, M4, M5 and M6

  • RIVKLE® Plus Kit – Thin head

    The RIVKLE® Plus kit contains RIVKLE® Plus blind rivet nuts with thin head in sizes M6, M8 and M10 and the RIVKLE® M2007 setting tool for manual installation.

    Contents

    • 50 M6 blind rivet nuts
    • 25 M8 blind rivet nuts
    • 25 M10 blind rivet nuts
    • Steel, zinc-plated
    • Flat head
    • RIVKLE® M2007 setting tool
    • 3 mandrels and nose pieces for M6, M8 and M10

  • RIVKLE® Plus Kit – Flat head

    The RIVKLE® Plus kit contains RIVKLE® Plus blind rivet nuts with flat head in sizes M6, M8 and M10 and the RIVKLE® M2007 setting tool for manual installation.

    Contents

    • 50 M6 blind rivet nuts
    • 25 M8 blind rivet nuts
    • 25 M10 blind rivet nuts
    • Flat head
    • Steel, zinc-plated
    • RIVKLE® M2007 setting tool
    • 3 mandrels and nose pieces for M6, M8 and M10

  • RIVQUICK® Kit

    The RIVQUICK® Kit contains a total of 558 parts, consisting of blind rivets, the BRS 02 setting tool for manual installation, and other accessories.

    Contents

    • BRS 02 setting tool
    • Assorted aluminium blind rivets with steel tang
    • 4 nose pieces
    • 2 drill bits

Areas of application

Repair solutions in the automotive sector

More information