1622C Dunbier A1368 Mackay Axle Castle Nuts, Washers and Pins x 2 Clamshell Pack | Marine Trailer Part
1622C Dunbier A1368 Mackay Axle Castle Nuts, Washers and Pins x 2 Clamshell Pack | Marine Trailer Part
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🔧 Product Description
Dunbier Axle Castle-Nut, Washer and Split-Pin Service Kit – Pair – Part Number: 1622C
A clamshell-packaged wheel-bearing retaining hardware kit containing two castle nuts, two axle washers and two split pins. Mackay A1368 is commonly described as a pair of 3/4-inch axle nuts and split pins for standard 39mm round through 45mm square axle families.
⚙️ Key Features
- Services both sides of one axle
- Includes castle nuts, flat/thrust washers and split pins
- Zinc-finished hardware
- Suitable for routine hub and bearing service
- Retail clamshell package keeps the components together
📏 Specifications
- Quantity: 2 castle nuts
- Quantity: 2 axle washers
- Quantity: 2 split pins
- Common nut size: 3/4-inch axle thread family
- Application range: Selected 39mm round to 45mm square axles
🔄 Cross Reference & Related Parts
- Dunbier: 1622C
- Mackay: A1368
- Bearing and seal kits are sold separately
- Use the axle-specific nut and washer if the installed stub uses a different thread
🚤 Trailer Compatibility & Application
- Suitable for compatible Dunbier/Mackay standard axle stubs
- Not automatically suitable for heavy 2.2-tonne, AL-KO or Trojan axle threads
- Compare thread diameter and pitch before installation
🔌 Function
Retains the hub and bearing assembly on the axle stub while the castellations allow the nut to be locked with a split pin.
⚠️ Common Signs of Failure
- Nut thread or castellations are damaged
- Washer is grooved, dished or heat-discoloured
- Split pin has been reused, bent repeatedly or corroded
- Bearing adjustment cannot be retained
- Nut has loosened because the locking pin is missing
🛠️ Installation & Safety
- Always use a new split pin
- Adjust wheel bearings according to the hub and bearing manufacturer's procedure
- Do not overtighten tapered roller bearings
- Align the nearest castle-nut slot without backing off excessively
- Confirm the wheel turns freely with no excessive end float
📦 Condition
- Brand new Dunbier Marine Products trailer component
- Supplied as one clamshell kit for both sides of one axle
- Supplied in original or equivalent packaging
Shipping & Delivery
Shipping & Delivery
Flat-rate shipping Australia-wide — $14.99 per order, no matter how many parts you add. Orders dispatch from our Kadina, South Australia store. Need it urgently or want to collect in person? Call us on 0412 532 984 before ordering.
Returns & Warranty
Returns & Warranty
14-day change-of-mind returns — if it's not right or you ordered the wrong part, send it back within 14 days in new, unused condition for a refund or exchange. Manufacturer warranties apply to new parts. Full details in our Refunds & Returns policy.
Not sure this fits?
Not sure this fits?
Ask us before you buy — we check part numbers and fitment every day. Call 0412 532 984 (Mon–Fri 8.30am–4.30pm) or message us through the contact page with your engine or vehicle details.
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