M6-M16 Square Plate Washers, ideal for use with Unistrut or equivalent channel. Supplied in Boxes of 100. To suit M6, M8, M10, M12 Allthread. Whilst disc washers operate solely as load distributors, square flat washers serve a second role. Their thick metal forms have a bolt opening in the centre, plus a wider surface area, a feature that spreads torque and head load. This means the bolt crown can be lifted away from the anchored part. It also means that a multi-surface project won’t deform or bend when the fastener is tightened. Thickness: 5mm thick. Finish: Hot Dipped Galvanised to BS EN ISO 1461:2009 or Bright Zinc Plated BS 7371-1:2009.
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