Flat Washers & Lock Washers in Inch Sizes – The Foundation of Secure Connections

Whether in automotive engineering, on boats, in aircraft modelling, or in compound archery – a reliable bolted connection depends on the right accessories. Our flat washers and lock washers in inch sizes deliver precisely that: top-quality materials, precise dimensions, and a wide selection for almost every application.

Flat Washers – Distributing Load, Protecting Surfaces

Flat washers are the unsung heroes of every bolted joint. They distribute clamping pressure evenly, protect surfaces from damage, and prevent the nut or bolt head from cutting into the component. At www.zoll-schrauben.ch, we stock flat washers in all standard inch sizes – from fine dimensions to heavy-duty versions for high loads.

Lock Washers – Protection Against Vibrations and Loosening

Wherever vibrations, impacts, or alternating loads occur, lock washers are indispensable. Our toothed lock washers (internal and external toothing) as well as serrated washers reliably prevent nuts and bolts from working loose. The special tooth geometry bites into the surface, creating a positive-locking, permanently secure connection – ideal for safety-critical applications in vehicles, machinery, or assembly structures.

Material Variety for Every Requirement

Depending on the environment and load, we offer both product groups in different material grades:

• Inox / Stainless Steel A2 (rust-free) – The top choice for outdoor use, marine environments, the food industry, or anywhere moisture and corrosion are concerns. Stainless steel is durable, stable, and maintains its strength even under harsh conditions.

• Zinc-Plated Steel – The reliable and cost-effective standard for use in mechanical engineering, automotive technology, or general trades. The zinc coating provides effective protection against surface rust.

• Plain / Uncoated Steel – For applications where subsequent surface treatment (e.g., powder coating or galvanising) is planned, or where specific tribological properties are required.

• Spring Steel – Specially for lock washers that require particularly high restoring force and spring action – perfect for heavily vibrating assemblies.

Areas of Application at a Glance

Our flat and lock washers in inch sizes are suitable for a wide range of uses:

• Automotive and Motorcycle Engineering – For chassis, engine mounts, add-on parts, and bodywork

• Boats, Ships, and Watercraft – Thanks to rust-free variants, ideal for saltwater environments

• Aircraft Construction and Model Aviation – Precision parts for safety-relevant bolted connections

• Compound Archery – For fine-mechanical adjustments and durable connections

• Mechanical and Plant Engineering – For production systems, conveyor technology, and assembly structures

• Construction and Assembly – For structures subject to static and dynamic loads

Available at www.zoll-schrauben.ch