# 20499931 Hex Socket Screw | Genuine Volvo Penta Part

## 🔧 Product Description

OEM fastening component used in the hydraulic/special-function belt-tensioning and bracket assembly. It restores the specified thread, length, strength and clamping arrangement required by the original Volvo Penta assembly.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta TAD720VE
-   Volvo Penta TAD721VE
-   Volvo Penta TAD722VE
-   Volvo Penta TAD520VE

-   **Engine Family:** TAD
-   **Year Range:** Approximately late 1990s-2010s, depending on engine and installation

## ⚙️ Key Features

-   Hex socket head
-   0.038 kg
-   For the belt-tensioning and bracket assembly
-   Listed for 4 applications on TAD series engines
-   The lighter 0.027 kg hex socket screw 20499932 serves the other position in the same assembly

## 🔌 Function

Clamps the belt-tensioning bracket assembly together, holding its parts in position against belt load and vibration.

## ⚠️ Common Signs of Failure

-   Belt tension slackening off as the joint loses clamping load
-   Rattle or knock from the tensioner mounting
-   Socket found rounded or packed with dirt so a key will not grip
-   Thread found stretched or galled on removal

## 🛠️ Service Notes

-   Two hex socket screws serve this assembly - 0.038 kg here and 0.027 kg for 20499932 - so check the position before ordering
-   Clean the socket out fully before undoing; a rounded socket on a tight screw turns a small job into a drilling job

## 🔄 Supersession & Cross Reference

### OEM / Related Numbers

-   20793522 V-belt
-   20513499 associated belt-drive component

## 📦 Condition

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

## Details

- **Price:** 8.26 AUD
- **Vendor:** Volvo Penta
- **Type:** Fasteners & Fixings
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 8.26 AUD | In stock |

## Images

- 20499931 Hex Socket Screw | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/20499931-hex-socket-screw-genuine-volvo-penta)
> Updated: 2026-10-09