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