High-performance locking washers engineered to meet BS, DIN, and ISO standards — serving the UK's most demanding industrial sectors.

Widely used across UK automotive and rail sectors. Provides reliable vibration resistance under dynamic loads.
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Preferred in North Sea offshore platforms and wind turbine installations for superior bite and anti-loosening performance.
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Manufactured to aerospace tolerances for UK defence and aviation applications including BAE Systems supply chains.
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Ideal for UK heavy engineering, bridges, and structural steel applications. Exceeds DIN 25201 requirements.
View Details →A trusted fastener manufacturer delivering precision locking washers to the United Kingdom and global markets since 2015.
Handan Yongnian District Dongshuo Fastener Manufacturing Co., Ltd. was established in 2015. It is an enterprise specialising in the production and operation of fasteners. Our company is committed to providing high-quality fastener products and delivering comprehensive solutions across various industries. As a reputable fastener manufacturer, we operate advanced production equipment and maintain a professional technical team to meet our customers' diverse requirements.
We proudly serve clients throughout the United Kingdom — from manufacturing hubs in the West Midlands to energy infrastructure in Scotland. Our locking washers are trusted in sectors including automotive, construction, renewable energy, rail, and aerospace. With rigorous quality control aligned to ISO 9001 standards and compliance with BS/DIN/ISO specifications, we ensure every product delivered to UK buyers meets the highest engineering expectations.



The United Kingdom remains one of Europe's most important markets for precision fasteners, driven by robust demand across multiple high-value sectors.
The UK manufacturing industry contributes over £190 billion to GDP annually. The West Midlands, Yorkshire, and the North West are key fastener-consuming regions, with thousands of precision engineering firms relying on high-quality locking washers for assembly lines and machinery maintenance.
The UK leads Europe in offshore wind capacity, with projects like Hornsea One and Dogger Bank requiring millions of certified locking washers annually. Fastener integrity is mission-critical in these harsh marine environments, driving demand for corrosion-resistant grades including A4 stainless steel variants.
With HS2 and Network Rail's multi-billion pound upgrade programmes, locking washers are essential components in track fixings, rolling stock assembly, and station structures. UK rail specifications demand full traceability and compliance with Network Rail standards.
The UK aerospace sector — centred in Bristol, Derby, and Belfast — is the second largest globally. Precision locking washers meeting AS9100 and NADCAP standards are critical for airframe assembly, engine mounting, and avionics enclosures in programmes from Rolls-Royce to BAE Systems.
Major UK infrastructure projects including the Thames Tideway Tunnel, Crossrail, and numerous smart city developments create sustained demand for structural-grade locking washers. These applications require compliance with BS EN 14399 for high-strength structural bolting assemblies.
From Jaguar Land Rover in Coventry to Nissan in Sunderland, UK automotive manufacturers require precision locking washers across drivetrain, suspension, and body assembly. The shift to electric vehicles (EVs) is creating new demand for lightweight, high-performance washer solutions.
Stay ahead with insights into the forces driving innovation and demand in the UK fastener and locking washer industry.
UK buyers increasingly demand environmentally responsible sourcing. We offer RoHS-compliant, zinc-free, and recyclable material options. Our manufacturing processes align with the UK's Net Zero 2050 targets, reducing carbon footprint per unit shipped to British customers.
Demand for titanium, Inconel, and duplex stainless steel locking washers is rising in UK oil & gas and aerospace sectors. We continuously invest in new alloy capabilities to serve next-generation engineering requirements across British industry.
Post-Brexit trade dynamics have prompted many UK manufacturers to diversify their supply chains. Our streamlined export processes, UK-compliant documentation, and established logistics partnerships ensure smooth, tariff-efficient delivery to all major UK ports and distribution hubs.
Our production facilities integrate automated quality inspection systems, real-time dimensional monitoring, and digital traceability — meeting the expectations of UK procurement teams who require full batch certification and conformance documentation.
UK engineers increasingly require bespoke washer geometries, special coatings (Geomet®, Dacromet®, hot-dip galvanised), and non-standard materials. Our technical team collaborates directly with UK design engineers to develop custom locking washer solutions from prototype to production.
The UK government's mandate to phase out petrol vehicles by 2035 is accelerating EV production. Battery enclosures, motor assemblies, and charging infrastructure all require specialised locking washers with non-magnetic properties and precise torque characteristics.
Our locking washers are deployed in critical UK applications from the Scottish Highlands to the South Coast — ensuring safety, reliability, and performance.
Hornsea & Dogger Bank wind farms use our A4-316 stainless serrated washers in turbine tower flange connections, withstanding North Sea saltwater corrosion and cyclic loading.
Locking washers supplied for Piccadilly Line rolling stock overhaul and Elizabeth Line infrastructure — meeting TfL's strict vibration and fatigue specifications.
Precision internal-toothed washers for Airbus UK wing assembly and GKN Aerospace structural components, manufactured to AS9100 Rev D quality management standards.
Onshore wind installations across Aberdeenshire and the Highlands rely on our hot-dip galvanised spring lock washers for lattice tower bolt assemblies in extreme weather conditions.
JLR, Toyota Derbyshire, and BMW Mini Oxford use our serrated flange washers in powertrain and chassis assembly, meeting IATF 16949 automotive quality requirements.
Type 26 frigate construction at BAE Systems Govan and Rosyth uses our high-tensile wedge washers in hull structural connections and machinery mounting systems.
Major civil engineering projects in London specify BS EN 14399-compliant locking washer assemblies for structural steel connections in bridges, stations, and tunnels.
The UK's booming data centre sector uses our non-magnetic stainless lock washers in server rack assemblies and precision electrical enclosures across Slough and Reading tech corridors.
State-of-the-art production equipment, rigorous quality control, and a dedicated technical team — delivering precision locking washers to UK standards.








Delivering consistent quality, technical expertise, and reliable logistics to the United Kingdom's most demanding industries.
Every batch of locking washers undergoes full dimensional inspection, hardness testing, and surface coating verification before shipment to UK customers. Full material certificates and test reports provided.
Our products conform to BS 4464, DIN 127, DIN 6798, ISO 7089, and other standards recognised by UK engineering procurement teams, ensuring seamless integration into your specifications.
Established partnerships with major freight forwarders ensure efficient delivery to Felixstowe, Southampton, and other UK ports. Express air freight available for urgent UK orders. Average transit time: 12–18 days.
Our English-speaking technical team provides material selection guidance, drawing review, and application engineering support — ensuring the right locking washer solution for every UK project requirement.
From M2 to M100 and beyond, we manufacture locking washers to customer drawings. Special materials, coatings, and packaging options available to meet UK OEM and MRO requirements.
Direct manufacturer pricing eliminates distributor margins, offering UK buyers significant cost savings on volume orders without compromising on quality or delivery performance.
Explore our full selection of precision locking washers — all available for supply to UK buyers with full certification and competitive lead times.

Standard split ring spring washers for general engineering across UK manufacturing.
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Outer toothed design for superior grip on painted and coated surfaces in UK construction.
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Precision internal serrations for UK aerospace and electronics assembly applications.
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Cam-action locking for UK offshore wind and oil & gas bolt connections.
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Belleville disc spring washers for UK rail track fastening and high-load structural applications.
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Maximum corrosion resistance for UK marine, coastal, and chemical processing environments.
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High-strength structural bolt assemblies for UK bridges, steel frames, and civil infrastructure.
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Bespoke locking washers manufactured to UK customer specifications, drawings, and special material requirements.
View Details →Common questions from our UK customers about locking washers, specifications, delivery, and compliance.
Contact our team today for competitive pricing, technical support, and fast delivery of precision locking washers to any location in the United Kingdom.
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