# 8935 Dunbier 1/2" and 12mm Galvanised Spring Washer | Marine Trailer Part

🔧 Product Description

  

Dunbier Galvanised Spring Washer for 1/2" and M12 Fasteners - Part Number: 8935

  

A 1/2" / M12 split spring washer used in Dunbier trailer hardware to spread clamping load, protect the component surface or provide the locking action required by the original joint.

  

⚙️ Key Features

  

• 1/2" / M12 nominal fastener size

• split spring washer design

• galvanised steel finish

• Application: compatible 1/2-inch and M12 trailer fastening joints

• Replacement service component

  

📏 Specifications

  

• Nominal size: 1/2" / M12

• Washer type: split spring washer

• Finish/material: galvanised steel

• Inside diameter, outside diameter and thickness must match the original application

• Confirm the inside diameter fits the actual imperial or metric bolt

  

🔄 Cross Reference & Related Parts

  

• Dunbier: 8935

• A generic equivalent must match inside diameter, outside diameter, thickness, hardness and finish

• Do not replace a hardened axle or structural washer with a thin general-purpose washer

  

🚤 Trailer Compatibility & Application

  

• Suitable for compatible 1/2-inch and M12 trailer fastening joints

• The washer must sit flat and fully support the nut or bolt head

• Use only with the matching bolt diameter and joint design

  

🔌 Function

  

Distributes fastener load, protects the clamped surface and performs the specified spacing or locking role.

  

Common signs of wear or replacement:

  

• Washer is dished, cracked, deeply grooved or worn thin

• Hole is elongated

• Corrosion has reduced the bearing area

• Shakeproof teeth or spring tension are flattened

• Washer no longer sits flat against the component

  

🛠️ Installation & Safety

  

• Install on a clean flat surface

• Orient toothed or shakeproof washers as required by the original joint

• Replace spring and shakeproof washers that have lost tension

• Use the correct hardened washer under high-load axle and structural nuts

• Torque the associated fastener to specification

  

📦 Condition

  

• Brand new Dunbier Marine Products trailer component

• Supplied as one replacement washer

• Supplied in original or equivalent packaging

## Details

- **Price:** 1.0 AUD
- **Vendor:** Dunbier
- **Tags:** Dunbier Boat Trailers | Marine Trailer Parts & Accessories

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 1.00 AUD | In stock |

## Images

- 8935 Dunbier 1/2" and 12mm Galvanised Spring Washer | Marine Trailer Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/8935-dunbier-1-2-12mm-galvanized-spring-washer)
> Updated: 2026-08-05