33% Off
Zenith

Zenith M8 x 40mm Hot Dipped Galvanised Cup Head Bolt and Nut, 4.6 Grade Steel

$2.52 $3.78 -33% OFF
You save: $1.26
Price reduced — was $3.78
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Frequently bought together

The Zenith M8 x 40mm hot dipped galvanised cup head bolt and nut is a 4.6 grade steel coach bolt for fastening timber to timber or timber to metal. The square neck under the head bites into the timber and stops the bolt turning as the nut is tightened.

  • Brand: Zenith
  • Bolt size: M8 x 40mm
  • Material: 4.6 grade steel
  • Finish: Hot dipped galvanised
  • Head type: Cup head
  • Colour: Grey
  • Pack: Each (bolt and nut)

The hot dipped galvanised finish gives this M8 coach bolt corrosion resistance for construction and woodworking outdoors, from fences and decks to pergolas and garden furniture. A matching M8 hot dipped galvanised washer and nut can be added to complete the fixing.

More about this product

The Zenith M8 x 40mm Hot Dipped Galvanised Cup Head Bolt and Nut is a reliable fastening solution ideal for construction and woodworking. It is designed for fastening timber to timber or timber to metal, providing durability and corrosion resistance. Also known as a coach bolt, it features a square neck design that prevents spinning during installation for a secure fit.

  • M8 x 40mm size
  • 4.6 grade steel with hot dipped galvanised finish
  • Cup head with square neck
  • Nut included

Questions & Answers

Is a nut supplied with this bolt?

Yes, each bolt comes with a matching hex nut.

How long does hot dipped galvanised steel last?

The heavy zinc coating gives long-lasting corrosion protection; the exact life depends on the environment and exposure.

Is hot dipped galvanised the same as galvanised?

Hot dipping creates a thicker zinc coating than lighter galvanised finishes, improving corrosion resistance.

What is a cup head bolt used for?

Also called a coach bolt, it fastens timber to timber or timber to metal, with the square neck preventing spinning.

Can I add a washer?

Yes, a matching M8 hot dipped galvanised washer fits under the nut.

Standard Shipping Australia-wide
Dispatches within 1-2 business days from our Australian warehouses
14-Day Change-of-Mind Returns
Change of mind? Eligible products can be returned within 14 days of delivery if unopened, unused and in original packaging. Return postage and restocking fees may apply. This does not affect your Australian Consumer Law rights for faulty products.

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