Hobson Metric Square Washer, M12 x 50mm x 3mm

The Hobson metric square washer comes in 5 sizes (mild steel, hot dip galvanised): M12, M16 and M20. A square washer spreads the load of a nut or bolt head over a larger square area than a round washer of the same bolt size.

Where this product is used

• Under bolt heads or nuts on timber, spreading the load over a larger area so the washer does not pull into the wood
• Bolting timber to steel brackets, with the square plate on the timber face
• Cup head and hex bolts through posts, where a round washer would be too small
• Outdoor and long-term exposure, including structural steelwork, roofing and fencing

Features

• 5 items: M12, M16 and M20
• Mild steel, hot dip galvanised
• Dimensions shown
• Pack quantity shown for each item
• Hot dip galvanised finish, for outdoor and weather-exposed work
• Material: mild steel

Key specifications

Choosing the right option

Hot dip galvanising is a zinc coating that is thicker than zinc plating. For a similar washer in another material, finish or size range see Hobson Metric Square Washer, Hot Dip Galvanised, 60 x 4mm, M16 to M30 and Hobson Metric Square Washer, Mild Steel, Hot Dip Galvanised, M8 to M36, 38 to 100mm Side.

These hot dip galvanised square washers carry a thick zinc coating that suits weather-exposed work such as fencing, roofing and structural steel. Close to the sea, within about 1 km, or in splash zones, 316 stainless is generally the better choice.

Square washers spread a bolt load over a larger plate, which is why they are used on timber. The listed dimensions give the bolt size, the side of the square and the thickness.

Related washers: Hobson Metric Square Washer, Hot Dip Galvanised, 60 x 4mm, M16 to M30, Hobson Metric Square Washer, Mild Steel, Hot Dip Galvanised, M8 to M36, 38 to 100mm Side and Hobson Metric Square Washer, Mild Steel, Plain, M12 to M24, 40 to 75mm Side.