8902 Dunbier 2" x 3/16 Galvanised Bolt Only | Marine Trailer Part

🔧 Product Description

Dunbier Galvanised Bolt 3/16" × 2" – Part Number: 8902

A replacement 3/16" × 2" trailer fastener supplied in a galvanised steel configuration. It is intended for light-duty Dunbier trailer brackets, guards or accessory fittings that specify this imperial bolt and should only replace hardware with the same dimensional, thread and strength specification.

⚙️ Key Features

• 3/16" fastener diameter
• Nominal length: 2"
• galvanised steel finish/material
• Hex-head trailer fastener
• Suitable for marine trailer servicing when matched to the original installation

📏 Specifications

• Diameter/thread: 3/16"
• Nominal length: 2"
• Thread form: imperial thread matching the original assembly
• Strength requirement: match the original fastener grade
• Finish/material: galvanised steel

🔄 Cross Reference & Related Parts

• Dunbier: 8902
• 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 brackets, guards or accessory fittings that specify this imperial bolt
• 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 Failure

• 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 only
• Supplied in original or equivalent packaging