Castle nut M10x1. Porsche 356B / 356C  ›  90007900303

Castle Nut M10x1
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The OE Match Castle Nut M10x1 is a replacement castellated retaining nut for the rear camber compensator fitted to selected Porsche 356B and 356C models.

Fits:

• Porsche 356B Super 90
• Porsche 356SC
• Porsche 356 Carrera 1600
• Porsche 356 Carrera 2

For cars with Camber Compensator

Diagram ref no 15

Its slotted design allows the nut to be secured with a split pin, helping prevent loosening and maintain a secure suspension connection.

What Does It Do?

The castle nut secures the camber compensator mounting connection.

Its castellated slots accommodate a split pin, providing mechanical retention to help prevent the nut from loosening during suspension movement.

Why Does It Fail?

Common causes include:

Corrosion and age-related deterioration Damaged or stripped threads Overtightening during installation Deformed castellated slots Damage during suspension servicing

When Should It Be Replaced?

Replace if the nut shows corrosion, thread damage, deformation or excessive wear.

It should also be replaced if it cannot be correctly tightened and secured with the appropriate split pin.

Checks & Installation

Inspect the camber compensator mounting bolt and associated components for damage.

Fit the correct M10x1 castle nut, tighten to the Porsche workshop specification and secure using a new split pin.

Never reuse a damaged nut or substitute an incorrect thread size.

Key Features

OE Match replacement castle nut Porsche reference 90007900303 M10x1 fine-thread specification Castellated design for split-pin retention Suitable for selected Porsche 356B and 356C models Designed for camber compensator applications Ideal for suspension servicing and restoration

Porsche 356B / 356C Camber Compensator Nuts & Suspension Fasteners

The rear camber compensator is an important suspension component fitted to selected Porsche 356B and 356C models, helping control rear suspension behaviour.

Correct fastening components are essential for maintaining secure camber compensator mounting connections.

The OE Match Castle Nut M10x1, part number 90007900303, provides a replacement for worn or damaged retaining nuts on compatible Porsche 356B Super 90, 356SC and Carrera models.

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Related, superseded, cross reference or alternative numbers for comparison.

90007900303

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