Hobson Metric Structural Flat Washer, M12

The Hobson metric structural flat washer comes in 7 sizes: M12 to M36. A structural washer is a flat washer for structural bolting assemblies.

Where this product is used

• Under the nut or the bolt head of structural assemblies, spreading the load
• Replacing missing structural washers on existing bolted steelwork
• Commercial and industrial steel framing where washers are part of the joint design
• Assemblies that will be painted, oiled or enclosed after fitting
• The 7 items cover diameters from M12 to M36, confirm the size against your drawing before ordering

Features

• 7 items: M12 to M36
• Pack quantity shown for each item
• AS1252
• Plain (uncoated) steel for dry indoor and machinery use

Key specifications

Choosing the right option

Choose the washer by the bolt size it is made for, and check that the washer standard and hardness match the specification for your joint.

Plain steel carries no protective coating apart from a light oil film, which is why it rusts quickly if it gets wet. Keep plain parts for dry indoor use, machinery and assemblies that get painted, oiled or enclosed. Outdoors or in damp areas, a hot dip galvanised or 316 stainless alternative is the better choice.

Structural washers are used with high-strength structural bolts, and the size has to match the bolt diameter. For load-critical, structural or lifting joints, confirm the fastener against the engineer's specification. Fasteners are not lifting rated unless marked.

Related washers: Hobson Durasquirt DTI Washer, Class 8.8, Mechanical Galvanised, M12 to M36, Hobson HDS Load Washer, Plain, M3 to M30 and Hobson HDS Load Washer, Zinc Plated, M3 to M30.