A1368 Mackay 1671 / 1622C Dunbier 2 x 3/4 Axle Nuts & Split Pins Kit | Marine Trailer Part

🔧 Product Description

Genuine Mackay Marine Trailer Products Slotted 3/4" Axle-Nut and Split-Pin Kit – Pair – Part Number: A1368

A paired axle-retention kit containing slotted nuts and split pins for compatible standard trailer stub axles. The slotted nut sets bearing preload and the split pin prevents the nut rotating after adjustment.

⚙️ Key Features

• Pair of slotted/castellated axle nuts
• Includes matching split pins
• Suitable for servicing both wheels on one axle
• Zinc-plated or corrosion-protected finish
• Essential replacement hardware after bearing adjustment

📏 Specifications

• Nominal axle-nut thread: 3/4-inch
• Pack quantity: Two nuts and two split pins
• Thread pitch and washer arrangement must match the axle stub

📋 Supplied Components

• 2 × Slotted axle nuts
• 2 × Split pins

🔄 Cross Reference & Related Parts

• Dunbier references: 1671 axle nut and 1622C packaged kit
• Single 25mm heavy-duty slotted nut: Mackay A1369

🚤 Compatibility & Application

• Compatible 39mm round through 45mm square axle-stub families using the matching 3/4-inch thread
• Set bearing preload before aligning the next nut slot with the split-pin hole
• Never back the nut off excessively solely to align the split pin
• Use new split pins after every removal

🔌 Function

Retains the wheel hub on the axle stub and locks the adjusted bearing preload.

⚠️ Common Signs of Failure

• Nut threads are stripped or damaged
• Slots are rounded or cracked
• Split pin is missing, fatigued or reused
• Nut cannot hold the correct bearing adjustment
• Axle thread or split-pin hole is damaged

📦 Condition

• Genuine Mackay Marine Trailer Products part
• Brand new
• Supplied in original or equivalent packaging