1660C Dunbier Wheel Nut 7/16" (HT) Pack of 5, Clamshell Pack | Marine Trailer Part

🔧 Product Description

Dunbier Holden HT Wheel Nut 7/16" UNF - Pack of 5 - Part Number: 1660C

A replacement 7/16" UNF tapered-seat trailer wheel nut for the Holden HT five-stud wheel pattern. The conical seat centres the wheel on the stud and clamps it against the hub flange.

⚙️ Key Features

• Trailer wheel nut with tapered/conical seat

• 7/16" UNF thread

• Matched to Holden HT five-stud hub studs

• Zinc or plated finish as currently supplied

• Pack quantity: 5 nuts

📏 Specifications

• Thread: 7/16" UNF

• Wheel pattern family: Holden HT five-stud

• Quantity: 5 nuts

• Seat, shank, knurl and length must match the original component

🔄 Cross Reference & Related Parts

• Dunbier: 1660C

• 7/16-inch hardware is associated with Holden HT-pattern hubs

• 1/2-inch hardware is associated with Ford-pattern hubs

• Do not mix metric, 7/16-inch and 1/2-inch wheel hardware

🚤 Trailer Compatibility & Application

• Suitable only for hubs and wheels using the stated thread and seat profile

• Wheel PCD and stud count must also match

• Stud knurl diameter and grip length must be checked when replacing studs

🔌 Function

Clamps the wheel securely to the hub stud and maintains wheel-to-hub seating under road load.

Common signs of wear or replacement:

• Threads are stretched, crossed or stripped

• Conical nut seat is galled or cracked

• Stud spins in the hub

• Corrosion has materially reduced the thread

• Wheel repeatedly loosens despite correct torque

🛠️ Installation & Safety

• Use a torque wrench and the hub/wheel manufacturer's specified torque

• Tighten wheel nuts progressively in a star pattern

• Do not lubricate threads unless the torque specification expressly assumes lubrication

• Press studs into the hub squarely; do not pull badly mismatched studs in with a wheel nut

• Recheck torque after the first 50-100km and after wheel removal

📦 Condition

• Brand new Dunbier Marine Products trailer component

• Supplied as one clamshell pack containing 5 nuts

• Supplied in original or equivalent packaging