Technical washers for industrial fastening and safety

A wide range of DIN standard washers for mechanical, industrial and structural applications

At OSN we offer a complete range of technical washers designed to improve safety, load distribution, sealing and resistance to loosening in bolted joints. Our catalogue runs from standard flat washers to mechanical locking solutions, spring washers, safety washers and special washers for applications subject to vibration, dynamic loads or demanding service conditions. The wide variety of DIN standards available makes it possible to select the optimum solution for every industrial assembly.

Our washer range

Flat washers (DIN 125A, DIN 125B), designed to distribute the clamping load and protect bearing surfaces.
Spring and safety washers (DIN 127B, DIN 137A, DIN 137B), designed to maintain preload and reduce the risk of loosening caused by vibration or dynamic loads.
Mechanical locking washers (DIN 93, DIN 6797A, DIN 6797J, DIN 6798A, DIN 6798J, DIN 6798V, NL), which use tabs, serrations or a wedge effect to secure bolted joints in demanding applications.
Shim and adjustment washers (DIN 463, DIN 988, DIN 1005), used to correct clearances, absorb tolerances and optimise the assembly of mechanical units.
Sealing washers (DIN 7603, DIN 7603-AL, DIN 7603-CO), developed to guarantee reliable sealing on hydraulic, pneumatic and fluid connections.
Special high-load washers (DIN 2093 and DIN 6796), able to work in applications subject to high stresses, repetitive cycles or severe service conditions.

Types of washer

DIN 1005

DIN 125A

DIN 125B

DIN 127B

DIN 137A

DIN 137B

DIN 2093

DIN 463

DIN 6796

DIN 6797A

DIN 6797J

DIN 6798A

DIN 6798J

DIN 6798V

DIN 7603

DIN 93

DIN 988

NL

AVAILABLE MATERIALS

Our range can be supplied in a wide variety of materials to suit the requirements of each working environment. We offer versions in carbon steel, spring steel, A2 and A4 stainless steel, brass, bronze, aluminium, copper, nylon and other technical alloys depending on the reference required. Different surface finishes are also available, such as electrolytic zinc plating, hot-dip galvanising, phosphating, blueing, nickel plating, zinc-nickel, zinc flake and other anti-corrosion treatments that increase the durability of the fastening.

Why choose OSN washers?

Extensive stock of DIN and ISO standard references.
Available in multiple materials and finishes.
Solutions for fastening, locking, sealing and load compensation.
Specialist technical advice for industrial applications.
Special supplies available to drawing or specification.
Consistent quality and product traceability.
Fast delivery and personalised service.
Suitable for sectors such as machinery, automotive, hydraulics, energy, industrial maintenance and construction.

Need more information?

If you cannot find the exact reference you need, or if you would like advice on selecting the most suitable washer for your application, contact the OSN technical team. We will be glad to help you identify the optimum solution based on working conditions, load requirements, vibration levels, corrosion resistance or any other specific requirement of your project. We hold one of the most complete ranges of technical washers in the industry and can offer both standard alternatives and special made-to-measure solutions.

Can we help you?

Our team will help you find the best solution and choose the optimal profile and material for your application.