# 853573 Hexagon Nut | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta hexagon nut, the AQ variant, from the Marine Propulsion group. It is listed for 47 applications across the MD, TMD, AD, AQAD, D and TAMD families. The AQ marking is what separates it from otherwise similar nuts in the range.

## 🚤 Compatibility

-   **Engine Family:** MD, TMD, AD, AQAD, D, TAMD, AQD, KAD, KAMD

Full model list at the end of this description.

## ⚙️ Key Features

-   AQ variant
-   47 applications across the MD, TMD, AD, AQAD, D and TAMD families
-   Hexagon nut

## 🔌 Function

Clamps a threaded joint and holds the assembly at its set tightness.

## ⚠️ Common Signs of Failure

-   Joint working loose, or the setting drifting in service
-   Nut found backed off, with fretting marks around the seat
-   Thread corroded, galled or stripped
-   Nut corners rounded from being turned with the wrong tool

## 🛠️ Service Notes

-   Check that the AQ variant is the one your application calls for rather than ordering on the name alone
-   Tighten to the manual figure for the joint, and use a new nut if the locking feature has already been used

## 📦 Condition

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

## 🔎 Full Model Compatibility

Typically suits:

-   Volvo Penta AD31, AD31B, AD31D-A, AD31L-A, AD31P-A, AD31XD
-   Volvo Penta AD41B, AD41D, AD41L-A, AD41P-A, AD41A, AD41BJ
-   Volvo Penta D41B, D41D, D41L-A
-   Volvo Penta KAD44P, KAD44P-B, KAD44P-C
-   Volvo Penta KAMD43P, KAMD43P-A, KAMD43P-B
-   Volvo Penta KAMD44P-B, KAMD44P-C, KAMD44P-A
-   Volvo Penta TMD40A, TMD40B, TMD40C
-   Volvo Penta AQAD40B, AQAD40A
-   Volvo Penta KAD43P-B, KAD43P-A
-   Volvo Penta TAMD40A, TAMD40B
-   Volvo Penta AD30A
-   Volvo Penta AQAD30A
-   Volvo Penta AQD40A
-   Volvo Penta KAD300-A
-   Volvo Penta KAD32P
-   Volvo Penta KAD42P-A
-   Volvo Penta KAMD300-A
-   Volvo Penta KAMD42P-A
-   Volvo Penta MD30A
-   Volvo Penta MD40A
-   Volvo Penta TAMD30A
-   Volvo Penta TAMD31B
-   Volvo Penta TAMD41B
-   Volvo Penta TMD30A

## Details

- **Price:** 7.7 AUD
- **Vendor:** Volvo Penta
- **Type:** Fasteners & Fixings
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 7.70 AUD | In stock |

## Images

- 853573 Hexagon Nut | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/853573-hexagon-nut-genuine-volvo-penta)
> Updated: 2026-09-19