# A1420N Mackay 1630 Dunbier Axle Round Stub & Nut 200mm x 39mm Suits LM Bearings | Marine Trailer Part

🔧 Product Description

  

Genuine Mackay Marine Trailer Products Round Axle Stub and Nut for LM Bearings - Part Number: A1420N

  

A replacement round axle stub and nut for fabricating or repairing a compatible trailer axle. The machined bearing journals suit the LM bearing family and the raw/weld section fits the stated axle tube.

  

⚙️ Key Features

  

• Machined bearing and seal journals

• Supplied with axle nut

• Suitable for professional axle fabrication or repair

• Designed for 39mm round axle section

• Allows a damaged stub end to be replaced when the axle beam remains suitable

  

📏 Specifications

  

• Overall stub length: Approximately 200mm

• Parent axle diameter: 39mm round

• Bearing family: LM

• Published application rating: standard light/medium trailer application

• Includes matching axle nut as stated

• Weld preparation, insertion depth and alignment must match the axle manufacturer design

  

📋 Supplied Components

  

• 1 × Machined axle stub

• 1 × Matching slotted axle nut

  

🔄 Cross Reference & Related Parts

  

• Dunbier cross reference: 1630

• Use only hubs, bearings, seals, washers and axle nuts matching the machined journals

  

🚤 Compatibility & Application

  

• Installation must be performed by a competent axle fabricator or welder

• Stub alignment, camber and hub-face dimensions must be set accurately

• Do not weld across machined bearing or seal surfaces

• Inspect the full axle for heat damage, cracks and straightness before repair

  

🔌 Function

  

Provides the machined spindle on which the hub bearings rotate and the threaded end that retains the hub.

  

Common signs of wear, damage or replacement required:

  

• Bearing journals are scored, pitted or undersize

• Stub is bent or cracked

• Axle-nut threads are damaged

• Seal land is grooved or corroded

• Tyre wear or hub runout indicates misalignment

  

📦 Condition

  

• Genuine Mackay Marine Trailer Products part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 29.0 AUD
- **Vendor:** Mackay
- **Tags:** Mackay Boat Trailers | Marine Trailer Parts & Accessories

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 29.00 AUD | In stock |

## Images

- A1420N Mackay 1630 Dunbier Axle Round Stub & Nut 200mm x 39mm Suits LM Bearings | Marine Trailer Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/a1420n-mackay-axle-round-stub-nut-200mm-x-39mm-suits-lm-bearings-1-dunbier-1630)
> Updated: 2026-08-05