Rear wheel hub castle nut. Porsche 356  ›  64433227100

Rear Wheel Hub Castle Nut

The OE Match Rear Wheel Hub Castle Nut is a replacement fastening component designed to secure the rear wheel hub assembly on applicable Porsche 356 models.

Fits:

• Porsche 356 1950-55
• Porsche 356A 1955-59
• Porsche 356B 1959-63
• Porsche 356C 1963-65

Diagram ref no 41

Its castellated design allows the nut to be secured with a locking pin, helping prevent loosening during vehicle operation.

What Does It Do?

The castle nut secures the rear wheel hub to the axle, maintaining the correct fastening of the hub assembly.

Its slots accommodate a locking pin, providing a mechanical safeguard against the nut loosening.

Why Does It Fail?

Common causes include:

• Damaged or stripped threads
• Corrosion and age-related deterioration
• Incorrect tightening
• Damage during removal or installation
• Repeated servicing and wear

When Should It Be Replaced?

Replace if the nut has damaged threads, excessive corrosion, deformation or worn locking slots.

Inspection is recommended whenever the rear hub or axle assembly is dismantled.

Checks & Installation

Inspect the axle threads, hub seating surfaces and associated locking components before installation.

Tighten to the specified Porsche workshop torque and secure using the correct locking pin. Never reuse a damaged locking pin or nut.

Key Features

• Castellated design for positive locking
• Helps maintain secure rear hub fastening
• Replaces damaged or corroded original hardware
• Suitable for classic Porsche servicing and restoration

Porsche 356 Rear Wheel Hub & Axle Components

The rear wheel hub assembly is an essential part of the Porsche 356 drivetrain, connecting the rear wheels to the axle assembly.

Correctly maintained hub fasteners help ensure secure wheel mounting and dependable operation.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

64433227100

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