HEICO Befestigungstechnik GmbH

The HEICO-LOCK® wedge locking system delivers high quality anti-vibration security for the most demanding of bolted joint applications. Even under extremes of vibration or dynamic loads, HEICO-LOCK® wedge lock washers provide maximum reliability. When the bolt is tightened, the external radial teeth of the HEICO-LOCK® wedge lock washers embed themselves in an interlocking fashion with the respective mating surface. If the securing system is subject to dynamic stress, movement is only possible between the internal washer surfaces. This results in an increase in the preload force.

• Certified system for securing bolts, working at low and high preload levels
• Particularly suitable for dynamic loads – including when using lubricants
• Can be re-used
• Very easy to install and remove (wedge lock washers are supplied as a pre-assembled pair)
• Also suitable for high-tensile bolts of 8.8, 10.9 and 12.9 and their respective nuts
• Available in steel or stainless steel with narrow or wide bearing surfaces - other materials are available upon request
• Available from M3 - M76 and ¼” - 3” - custom sizes upon request

HEICO-LOCK® Wedge Lock Washers

Even under extremes of vibration or dynamic loads, the HEICO-LOCK® Wedge Locking System provides maximum reliability.

When the bolt is tightened, the external radial teeth of the HEICO-LOCK® Wedge Lock System embed themselves in an interlocking fashion with the respective mating surface. If the securing system is subject to dynamic stress, movement is only possible between the internal washer surfaces. This results in an increase in the clamping force.

HEICO-LOCK® Ring Lock Washers

HEICO-LOCK® Ring Lock Washers provide high-quality, user-friendly bolt securing for the most demanding of applications and are ideal for repeated use.

The ring locking system guarantees that the two wedge lock washers are always fastened in the correct position with the wedge shaped cams on the inside and the radial teeth on the outside. This means that the bolt locking system is always easy, safe and quick to install, even for non-specialist users.

HEICO-LOCK® Wedge Lock Nuts

The HEICO-LOCK® Wedge Lock Nut is a re-usable one piece design that delivers high quality, user friendly bolt security without the need for seperate fasteners.

The captive and rotary combination of the nut and the original HEICO-LOCK® Wedge Lock Washers makes securing your bolted joints more efficient, effective and easier even under the most extreme vibrations and dynamic loads

HEICO-LOCK® Wheel Nuts

The HEICO-LOCK® Wheel Nut is the reliable solution for the problem of self-loosening of wheel nuts on both roads and rough terrain.

The captive and rotary combination of the nut and the proven HEICO-LOCK® Wedge Lock Washers provides ideal protection for securing your wheels even under the most adverse circumstances, high speeds and demanding road conditions. With the HEICO-LOCK® Wheel Nut accidents caused by wheel loss are a thing of the past!

HEICO-LOCK® HLK-Washers for steel construction

The HEICO-LOCK® HLK-Washers offer high quality anti-vibration security for HV sets according to DIN EN 14399-4 and DIN EN 14399-8.

Even under extremes of vibration or severe dynamic loads in steel construction the HEICO-LOCK® HLK-Washers, which are approved by the German Institute for Structural Engineering (DIBt), provide maximum reliability. Due to the increased under head radius of HV bolts, the HEICO-LOCK® HLK-Washers are chamfered on the internal diameter to ensure optimal surface contact while tightening.

HEICO-LOCK® Combi-Washers

The efficient combined securing system for highly loaded bolted connections

HEICO-LOCK® Combi-Washers enable quick and easy assembly, especially in difficult installation situations. Combine the simple to use HEICO-LOCK® Combi-Washers with all commercially available bolts provided by your suppliers, quickly and easily.

For a secure joint with a HEICO-TEC® tension nut, no electric, hydraulic, or pneumatic tools are needed. All you need is a torque wrench. The HEICO-TEC® tension nut is unique in the fact that the pretension force of the large main thread is distributed to many smaller pressure bolts. Because the pressure bolts are smaller, a conventional torque wrench can be used to achieve the correct pretension force. This eliminates the need for complex, bulky, or heavy tools and makes securing large bolted joints more convenient and easy.

Tension Nuts according to ISO 898-2

HEICO-TEC® Tension Nuts in strength class 8 and 10 meet all the requirements of ISO 898-2 which enables you to easily replace any hex nut from the same strength class while also offering all the advantages of a hand-tightened nut.

Our standard program of HEICO-TEC® Tension Nuts offers you the following advantages:

• Fast delivery: On stock and therefore directly available
• Compatible with DIN EN ISO 898-2: Direct replacement of hex nuts from the same strength class possible
• Extended service through consultation as well as installation aids for technical documentation (e.g. assembly template)

HEICO-TEC® Tensioning Systems

• Easy, fast and reliable assembly of large bolted joints
• High preload force due to torsion-free assembly
• Controlled friction characteristics ensure the highest tightening and repeat accuracy
• Losses from settlement of the joint do not occur and full capacity of the joint is achieved
• Tension nuts and reaction nuts are compatible with common strength classes according to ISO 898-2
• Can be re-used several times
• Standard available from M20-M120 strength class 8 and M20-M90 strength class 10
• Other strength classes, bolt sizes, thread types and thread pitches are available on request

The efficient combined securing system for highly loaded bolted connections

HEICO-LOCK® Combi-Washers enable quick and easy assembly, especially in difficult installation situations. Combine the simple to use HEICO-LOCK® Combi-Washers with all commercially available bolts provided by your suppliers, quickly and easily.

• Easy mounting and permanent connection thanks to the inset tabs
• Can be combined with all commercially available bolts
• Also available in small purchase quantities
• Flexible use for various different types of bolts
• Permanent securing and correct positioning of HEICO-LOCK® Wedge Lock Washers
• Can be re-used several times
• Cost savings through increased productivity
• Available in steel or stainless steel with narrower and wider contact areas
• Available from M8 to M16
• Can be supplied completely pre-assembled on request

Tailored precisely to your requirements

We supply HEICO-LOCK® Combi-Washers to meet your requirements. Fit HEICO-LOCK® Combi-Washers to your own existing bolts, quickly and easily. You can choose to carry out this step yourself or we can supply you with pre-assembled bolts ready to use.

HEICO-LOCK® Combi-Washers fit all commercially available bolts, giving you a decisive advantage as the combi product enables you to optimise your purchases through space-saving storage. Benefit from our short delivery times and attractive small purchase quantities too.