# 8941 Dunbier 1 1/2" x 1/4 Galvanised Bolt Only | Marine Trailer Part

🔧 Product Description

  

Dunbier Galvanised Bolt-and-Nut Set 1/4" × 1-1/4" - Catalogue Specification - Part Number: 8941

  

A replacement 1/4" × 1-1/4" trailer fastener supplied in a galvanised steel configuration. It is intended for light-duty Dunbier trailer fittings that specify part 8941 and should only replace hardware with the same dimensional, thread and strength specification.

  

⚙️ Key Features

  

• 1/4" fastener diameter

• Nominal length: 1-1/4"

• galvanised steel finish/material

• Hex-head trailer fastener

• Suitable for marine trailer servicing when matched to the original installation

• Matching matching 1/4-inch nut supplied

  

📏 Specifications

  

• Diameter/thread: 1/4"

• Nominal length: 1-1/4"

• Thread form: imperial thread matching the current Dunbier package

• Strength requirement: standard trailer hardware; match the original bolt grade and head markings

• Finish/material: galvanised steel

• Current and legacy Dunbier catalogues list part 8941 as 1/4-inch × 1-1/4-inch galvanised bolt and nut

• The supplied title states 1-1/2-inch and bolt only; verify the physical package before installation

  

🔄 Cross Reference & Related Parts

  

• Dunbier: 8941

• A generic replacement is acceptable only when diameter, length, thread pitch, strength grade, finish and shank configuration all match

• Do not substitute lower-grade hardware or an unverified stainless bolt in a high-tensile structural application

  

🚤 Trailer Compatibility & Application

  

• Suitable for light-duty Dunbier trailer fittings that specify part 8941

• Measure the original bolt from beneath the head to the end of the thread unless the fastener standard states otherwise

• The unthreaded grip length must suit the clamped joint and must not bottom the nut before the components are secure

• Use the correct washer, locking nut or spring washer for the original joint

  

🔌 Function

  

Clamps the associated trailer components together and transfers shear, tension and vibration loads through the mounting joint.

  

Common signs of wear or replacement:

  

• Thread is stretched, crossed, stripped or heavily corroded

• Bolt shank is bent, necked, grooved or worn

• Hex head is rounded or cracked

• Joint repeatedly loosens despite correct torque and locking hardware

• Corrosion has materially reduced the fastener diameter

  

🛠️ Installation & Safety

  

• Confirm the replacement grade from the original bolt head and trailer parts documentation

• Do not reuse a fastener that has stretched, yielded or suffered severe corrosion

• Tighten to the specification for the exact bolt grade, thread, finish and joint

• Use corrosion-compatible washers and locking hardware

• Recheck critical trailer fasteners after the first trip and during routine servicing

  

📦 Condition

  

• Brand new Dunbier Marine Products trailer component

• Supplied as one bolt and matching nut

• Supplied in original or equivalent packaging

## Details

- **Price:** 1.5 AUD
- **Vendor:** Dunbier
- **Tags:** Dunbier Boat Trailers | Marine Trailer Parts & Accessories

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 1.50 AUD | In stock |

## Images

- 8941 Dunbier 1 1/2" x 1/4 Galvanised Bolt Only | Marine Trailer Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/8941-dunbier-1-1-2-x-1-4-galvanized-bolt-only)
> Updated: 2026-08-05