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    M8 Hex Flange Bolt 40mm Zinc Plated 4 Pack

    M8 Hex Flange Bolt 40mm Zinc Plated 4 Pack

    In stock

    $8.45 AUD
    $0.00 AUD $8.45 AUD
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    • Real local people
    • Trade-grade fixings
    • Thread match help

    A washer and a bolt in one, built to hold tight where things shake.

    When a join cops a bit of movement and shake, a flange bolt does the work of a bolt and a washer in one. The serrated flange spreads the load across a wider face and bites in as you tighten, so the head sits flat and stays put.

    This one is M8 with a 40mm shank, made to DIN 6921 in class 8.8 zinc-plated steel. The high-tensile rating holds torque on metal and machinery where a soft bolt would stretch or work loose, and the zinc coat keeps surface rust off in a shed or under a vehicle.

    Reach for these on trailers, mower decks, brackets, and any bolt-up that takes vibration. If you're matching an existing thread, bring the old one in and we'll check the size with you.

    Full thread, pitch, and grade details are in the specs below.

    View full details

    The technical bits

    • Thread size: M8
    • Length: 40mm
    • Thread pitch: 1.25mm (coarse)
    • Head type: Hex flange, serrated
    • Standard: DIN 6921
    • Grade: Class 8.8 high tensile
    • Finish: Zinc plated
    • Drive: External hex (spanner or socket)
    • Material: Carbon steel
    • Pack quantity: 4

    Why these earn their place in the kit

    • Built-in flange spreads the load so you can skip the separate washer
    • Serrated face bites in as you tighten and resists shaking loose
    • Class 8.8 steel holds torque on metal without stretching
    • Zinc plating keeps rust off in the shed or under a vehicle
    • Hex head drives with a standard spanner or socket
    • Sized to a common metric thread for repairs and bolt-ups

    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

    • Straight answers, fast

      Our team respects your time and gives practical advice without the pitch.

    • Support beyond the sale

      We help with timing, soil fixes, and setbacks — not just what to buy today.

    • Same care for trade and DIY

      Every customer gets the same attention, whether it’s one room or a full build.

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