Coach Bolts – Cup Head Strength for Timber and Structural Fixing

Whether you're bolting into timber posts, fixing battens or installing framing brackets, coach bolts deliver tough, tamper-resistant fastening with a clean finish. Also known as cup head bolts, these fixings are ideal for timber-to-timber and timber-to-steel connections on site — and we stock them in the sizes and coatings you...

Whether you're bolting into timber posts, fixing battens or installing framing brackets, coach bolts deliver tough, tamper-resistant fastening with a clean finish. Also known as cup head bolts, these fixings are ideal for timber-to-timber and timber-to-steel connections on site — and we stock them in the sizes and coatings you need to get the job done right.

Built for:

  • Timber framing and pergola builds

  • Site hoarding and structural fencing

  • Decks, trusses and retaining walls

  • General construction and civil use

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Galvanised Coach Bolts – Long-Term Fixing That Resists Rust

On-site jobs need gear that holds up to the elements. Our galvanised coach bolts are hot dip treated to fight rust, moisture and weather exposure — making them perfect for external or structural timber jobs.

  • AS/NZS 1390 compliant
  • M8, M10, M12 and larger in stock
  • Includes square under-neck to resist turning
  • Supplied with hex nuts for installation

Cup Head Bolt Packs – Trade Stock Without the Fluff

We stock cup head bolts in trade packs and bulk job quantities — no mixed-grade assortments, no cheap imports. These are tight-tolerance, heavy-duty bolts ready for fast install with a spanner and drill-through timber or mild steel.

  • Smooth dome head resists tampering
  • Square shank locks into timber
  • Available in zinc or HDG finish
  • Stocked by size or mixed trade kits

Coach Bolts for Civil, Framing and Outdoor Builds

Need fixings that don’t fail in the middle of the job? Our M10 and M12 coach bolts are popular with tradies, fencing contractors and builders for structural joins, timber posts, temporary fencing and council-spec installs.

  • Ideal for joist hangers and post fixings
  • Tough enough for retaining walls and concrete forms
  • Smooth-head finish for safety and aesthetics
  • Can be combined with square plate washers

Tired of bolts that spin, rust or snap under load? Industrial Shed stocks coach bolts built to last — galvanised, cup head and ready for site. Order online now or call us for bulk deals and tradie packouts.

Frequently Asked Questions

Yes — both refer to the same type of bolt with a domed head and square shank under the head.

Absolutely. They’re often overkill for dry indoor jobs, but there’s no harm. For clean finishes, go with zinc.

Yes — pre-drilling ensures correct fit and prevents timber splitting. A slightly undersized pilot hole helps grip.

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