20709933 Nut | Genuine Volvo Penta Part

🔧 Product Description

A genuine Volvo Penta service nut used in a mounting or adjustment assembly. Published records confirm the component identity but do not disclose one universal engine position; the complete serial-specific parts list for your engine must therefore be used.

⚙️ Key Features

• Exact OEM thread and locking configuration for the assigned position
• Works with the associated 20709930-20709933 hardware group where that parts list for your engine is specified
• Maintains the required clamping, spacing or alignment
• Material and finish suit engine vibration and corrosion exposure
• Use the Volvo Penta tightening or assembly procedure
• Do not substitute visually similar hardware without dimensional verification

🔌 Function

Provides the specified threaded clamping load in the associated mounting assembly.

⚠️ Common Signs of Failure

• Threads are stripped or stretched
• The flats are rounded
• The nut repeatedly loosens
• Corrosion prevents correct torque
• Replacement is required where locking performance is uncertain

🛠️ Service Notes

• Fit a new nut wherever the original is a self-locking, nylon-insert or deformed-thread type — the locking feature is single-use and a reused one will not hold
• Clean and inspect the male thread before fitting; run the nut down by hand for most of its travel, and stop and investigate rather than forcing a nut that binds
• Tighten to the figure given in the workshop manual for your engine, using the correct washer and the specified tightening sequence where one applies
• Renew any split pin, tab washer, locking wire or lock washer that goes with the nut, and bend or fit the locking device properly once tightened
• On drive and underwater assemblies, keep dissimilar metals apart where the design intends it and refit any anti-corrosion or anti-seize treatment the manual specifies for that joint

🔄 Supersession & Cross Reference

OEM / Related Numbers

• 20709930 - Washer in the associated hardware group
• 20709931 - Screw in the associated hardware group
• 20709932 - Spacer in the associated hardware group

📦 Condition

• Genuine Volvo Penta part
• Brand new
• Supplied in original or equivalent packaging