# 8943 Dunbier 1/2" Galvanised Nyloc Nut Only | Marine Trailer Part

🔧 Product Description

  

Dunbier Galvanised Nyloc Nut 1/2" - Part Number: 8943

  

A replacement 1/2" nylon-insert lock nut nut for Dunbier trailer hardware. The nut secures the matching bolt or stud and should be selected by exact diameter, pitch, seat style, grade and finish.

  

⚙️ Key Features

  

• 1/2" thread size

• galvanised finish

• nylon-insert lock nut configuration

• Replacement trailer fastening component

• Suitable for marine trailer repairs when matched to the original thread and grade

  

📏 Specifications

  

• Thread size: 1/2"

• Nut type: nylon-insert lock nut

• Finish: galvanised

• Thread pitch must match the original bolt or stud

  

🔄 Cross Reference & Related Parts

  

• Dunbier: 8943

• Comparable generic nuts must match the thread pitch, strength class, locking design and corrosion protection

• Do not mix metric, UNC, UNF or Whitworth-style imperial threads

  

🚤 Trailer Compatibility & Application

  

• Suitable only for bolts or studs with the matching thread

• Nyloc nuts should not be used where service temperature or repeated removal exceeds the insert specification

• Use a plain nut only where the original joint includes a separate locking method

  

🔌 Function

  

Develops the clamping force that retains the trailer joint, wheel component, bracket or accessory.

  

Common signs of wear or replacement:

  

• Threads are stripped, stretched or heavily rusted

• Nylon insert no longer resists rotation

• Nut corners are rounded

• Nut repeatedly loosens

• Seat or bearing face is cracked, galled or distorted

  

🛠️ Installation & Safety

  

• Start the nut by hand to prevent cross-threading

• Use the correct torque for the bolt grade and joint

• Replace a nyloc nut when its insert no longer provides positive resistance

• Do not use an impact tool to force a mismatched thread

• Recheck critical joints after initial use

  

📦 Condition

  

• Brand new Dunbier Marine Products trailer component

• Supplied as one replacement nut

• Supplied in original or equivalent packaging

## Details

- **Price:** 2.0 AUD
- **Vendor:** Dunbier
- **Tags:** Dunbier Boat Trailers | Marine Trailer Parts & Accessories

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 2.00 AUD | In stock |

## Images

- 8943 Dunbier 1/2" Galvanised Nyloc Nut Only | Marine Trailer Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/8943-dunbier-1-2-galvanized-nylock-nut-only)
> Updated: 2026-08-05