Macsim Cup Head Bolt and Nut M8 x 120mm, Galvanised
Macsim Cup Head Bolt and Nut M8 x 120mm, Galvanised
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A long galvanised cup head bolt with its nut, for bolting through a thick piece of timber or two boards together where you want a smooth round head on the face that can't be undone from that side.
The square neck under the dome bites into the timber as you do the nut up, so the bolt won't spin while you tighten it. It's galvanised for outdoor jobs like fences and gates, and at 120mm long it goes through a post or a doubled-up rail with room for a washer and the nut. Drill an 8mm hole and tap the bolt through before you put the nut on.
Sold each, with the nut. Full specs are in the tabs below, and if you're not sure of the length you need, call us on (08) 8536 4333 or pop in to 34-52 Milnes Rd, Strathalbyn.

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The details
- Brand: Macsim
- Type: Cup head bolt with nut
- Size: M8 x 120mm
- Thread: Metric
- Head: Domed cup head with square neck
- Finish: Galvanised
- Sold: Each, nut included
Why it's worth it
- Square neck grips the timber so you only need one spanner
- Smooth head on the face, nothing to snag or undo from that side
Shipping and Returns
We pack and send your order with care, right here from our Strathalbyn store. Most parcels leave within 1-2 business days, and you'll get tracking as soon as it's on the way. If you're local, you can choose click-and-collect or our delivery service at checkout.
If something arrives damaged or not quite right, let us know within 14 days and we'll sort it quickly. You can return unused items in their original condition for a refund or store credit. For safety reasons, we can't accept returns on gas bottles, cut materials, or custom orders.
We're here to make things easy, so if you ever have a question about your delivery or a return, our team is only a call away.
Why you'll love shopping with us
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Built to handle our weather
Colorbond and steel chosen to stand up to local heat, wind and rain.
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Everything for the whole job
Panels, posts, cement and fixings in one place so you're not chasing bits.
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Help to get it right
We'll talk through sizes and what you'll need before you commit.