5633 Dunbier D Shackle 12mm Bulk | Marine Trailer Part

🔧 Product Description

Dunbier Rated Galvanised D-Shackle 12mm - Bulk - Part Number: 5633

A galvanised 12mm D-shackle for connecting compatible trailer safety chains to the tow vehicle or trailer attachment point.

⚙️ Key Features

• Nominal body diameter: 12mm

• Type: rated

• Galvanised finish

• Removable threaded pin

• Trailer safety-chain and general connection use

• Pack form: single bulk

📏 Specifications

• Size: 12mm

• Internal dimensions: refer to the supplied component

• Rating: use only to permanent stamped/marked capacity

• Quantity: single bulk

🔄 Cross Reference & Related Parts

• Dunbier: 5633

• Rated family: Dunbier 5630, 5630C, 5633 and 5672

• Dimensioned 10mm family: 5632B and 5632C

• Comparable shackles must be marked for the required trailer ATM

🚤 Trailer Compatibility & Application

• Suitable for a trailer safety chain only when the shackle's marked capacity and applicable regulations permit it

• Pin and bow must fit the chain and vehicle attachment without side loading

• Do not assume an unmarked shackle is rated

🔌 Function

Forms a removable load-bearing connection between a safety chain and an approved attachment point.

Common signs of wear or failure:

• Pin thread is damaged

• Bow is bent or stretched

• Deep corrosion or wear reduces diameter

• Rating marking is unreadable

• Pin repeatedly loosens

🛠️ Installation & Safety

• Select by marked capacity, not diameter alone

• Tighten the pin fully and secure as required

• Avoid side loading

• Do not weld, heat or modify the shackle

• Replace after severe shock loading or visible deformation

📦 Condition

• Genuine Dunbier Marine Products part

• Brand new

• Supplied as one single bulk 12mm D-shackle

• Supplied in original or equivalent packaging