• Macsim 3/8" x 9" Cup Head Coach Bolt and Nut Zinc Plated
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Macsim 3/8 x 9" Cup head BOLT & NUT Zinc Plated

Macsim 3/8 x 9" Cup head BOLT & NUT Zinc Plated

32 in stock

$3.30 AUD
$0.00 AUD $3.30 AUD
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Taxes included. Shipping calculated at checkout.

A loose join is the thing that comes back to bite you, so the fixings have to hold. This Macsim coach bolt and nut is built for solid structural work, holding timber to timber and metal to metal in framing, post supports, fencing and retaining walls.

It has the classic cup head, a smooth domed top over a square neck that bites into the timber as you tighten, so the bolt will not spin while you do up the nut. The 3/8" thread runs 9" long, and the whole thing is grade 4.6 with a zinc-plated finish that keeps the rust at bay for general outdoor use.

Sizing is imperial, so match it to what you are replacing or bring the old one in and we will sort the fit. If you need a box or a bulk run for a bigger job, give us a call and we will price it up.

Full sizing is in the tabs below. Pop in to 34-52 Milnes Rd or order online and we will have it ready.

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The bolt specs

  • Type: Cup head coach bolt and nut
  • Diameter: 3/8"
  • Length: 9"
  • Head: Cup head (carriage head)
  • Drive: Square neck, tighten by the nut
  • Measure: Imperial
  • Grade: 4.6
  • Finish: Zinc plated
  • Includes: Matching nut

Why it holds

  • Square neck stops the bolt spinning as you tighten the nut
  • Domed head sits smooth with no sharp edge to catch on
  • Zinc plating holds off rust through general outdoor use
  • Comes with the matching nut, so no hunting for a pair
  • Sized for framing, fencing, posts and retaining walls
  • Grab the exact length you need without buying a whole box

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

  • Built to handle our weather

    Colorbond and steel chosen to stand up to local heat, wind and rain.

  • Everything for the whole job

    Panels, posts, cement and fixings in one place so you're not chasing bits.

  • Help to get it right

    We'll talk through sizes and what you'll need before you commit.