H3850G Mackay M12 Nut Galvanised | Marine Trailer Part
H3850G Mackay M12 Nut Galvanised | Marine Trailer Part
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✓ Authorised Volvo Penta Dealer · Marine & auto specialists · Ships Australia-wide
🔧 Product Description
Mackay M12 Galvanised Hex Nut – Part Number: H3850G
A galvanised M12 hex nut for compatible Mackay trailer bolts.
⚙️ Key Features
- M12 thread
- Hex profile
- Galvanised finish
- General trailer hardware
- Matching metric fastener
📏 Specifications
- Thread: M12
- Type: hex nut
- Finish: galvanised
- Pitch/grade must match
🔄 Cross Reference & Related Parts
- Mackay: H3850G
🚤 Trailer Compatibility & Application
- Use on matching thread
- Use required washer/lock method
- Critical joints require correct grade
🔌 Function
Threads onto the bolt to retain joint clamping force.
⚠️ Common Signs of Failure
- Stripped thread
- Rounded flats
- Corrosion
- Loosening
- Incorrect grade
🛠️ Installation & Safety
- Match pitch/grade
- Use locking method
- Torque correctly
- Protect dissimilar metals
- Replace damage
📦 Condition
- Genuine Mackay Trailers part
- Brand new
- Supplied as one M12 hex nut
- 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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