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The Heico-Lock® Product Range

Wedge Lock Washers

Heico-Lock® Steel Wedge Lock Washers are made of SAE J-403-AISI 1042/1045 or similar high carbon steel.
Heico-Lock® Wedge Lock Washers are perfectly suited to work with structural grade and high tensile bolts and nuts (8.8, 10.9, 12.9., ASTM 574). Large O.D. locking washers are recommended for use on large/long holes (e.g. with flange nuts or screws), painted surfaces or soft materials, (e.g., aluminium).

Steel Washer - Range

Stainless Steel
Wedge Lock Washers

stainless steel

Heico-Lock® stainless steel washers are made of AISI 316L or equivalent alloy. Typical uses include medical equipment, food production, outdoor enclosures and various industrial applications

Stainless Steel Washer - Range
254 SMO®
Wedge Lock Washers


254 SMO® washers are made of high alloy austenitic stainless steel developed for use in seawater and other aggressive chloride bearing media. The alloy has a high resistance to general corrosion and stress corrosion cracking. The material also has higher strength than conventional austenitic stainless steels.

254 SMO - Range

Wedge Lock Washers

Inconel® 718 washers are made of nickel based, heat resistant alloy. Typical applications include aerospace and power plant turbines, rocket and space based components, oil & gas industry assemblies and chemical industry parts. Inconel® 718 also has low temperature performance and is suitable for cryogenic applications

Inconel® - Range

Ring Lock Washers

Ring Lock

Heico-Lock® Ring Lock Washers are available when a more positive locking mechanism between the two washer halves is required. The locking system is particularly suitable for applications involved in repeated reuse. The blue polyamide ring also provides a clear visual indication that a washer is present on the joint

Ring Lock Washer - Range

Combi Washers

Combi Washers

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. Can be supplied completely pre-assembled on request.

Combi Washer - Range

HLK Washers

HLK Washers

Heico-Lock® HLK washers deliver high quality anti-vibration security for HV sets according to DIN EN 14399-4 and DIN EN 14399-8. The 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, HEICO-LOCK® HLK washers are chamfered on the internal diameter to ensure optimal surface contact while tightening.

HLK Washer - Range

Wedge Lock Nuts & Wheel Nuts

Wedge Lock Nuts

The Heico-Lock® Wedge-Lock Nut provides a user-friendly bolt securing system with the 1 piece nut and washer combination eliminating the risk of incorrect application when re-using.

The Heico-Lock Wheel Nut is the reliable solution to the problem of self-loosening of wheel nuts on both roads and rough terrain.  Accidents due to wheel loss are a thing of the past!

Wedge Lock Nuts & Wheel Nut Range


Heico Tec
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 nut is unique in the fact that the pre-tension force of the large main thread is distributed to many smaller pressure bolts. As the pressure bolts are smaller a conventional torque wrench can be used to achieve the correct pretension force thus eliminating the need for complex, bulky or heavy tools and making securing large bolted joints more convenient and easy. HEICO-TEC also meets the requirements of ISO 898-2 which means you can easily replace any hex nut from the same strength class.

HEICO-TEC tension nut range

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