# 851858 Hex Socket Screw | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta hexagon socket screw 90 mm long, weighing 0.032 kg and listed for 47 applications across the D, TMD, MS, TAMD and MD series.

## 🚤 Compatibility

-   **Engine Family:** D, TMD, MS, TAMD, MD

Full model list at the end of this description.

## ⚙️ Key Features

-   90 mm long
-   0.032 kg
-   47 applications across five engine series
-   Hexagon socket head

## 🔌 Function

Clamps the assembly together through a socket head that can be tightened where there is no room for a spanner.

## ⚠️ Common Signs of Failure

-   Screw found loose or backed out
-   Socket rounded so a key will no longer grip
-   Thread corroded, picked up or stripped
-   Screw stretched or snapped in the hole
-   Rust weeping from around the head

## 🛠️ Service Notes

-   Length is what separates this from its siblings, with 851859 at 140 mm and 851860 at 40 mm, so measure before ordering
-   Clean the socket out before inserting the key, since packed dirt is the usual reason a socket head rounds off

## 📦 Condition

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

## 🔎 Full Model Compatibility

Typically suits:

-   Volvo Penta 2003, 2003R, 2003R SOLAS, 120S-B, 2003TB, 2003TB SOLAS, 120SC, 120S-D, 120S-E, 2001AG, 2001B, 2001BG, 2001D, 2003D, 2003T, 2003TR, 2002AG, 2002B, 2002BG, 2002D, 2003B, 2003B SOLAS, 2003 SOLAS, 2001, 2002, 2001R
-   Volvo Penta MD22, MD22A, MD22L, MD22P
-   Volvo Penta MS2B-A, MS2B, MS2V
-   Volvo Penta TMD22A, TMD22B, TMD22P-C
-   Volvo Penta MD2010, MD2010B
-   Volvo Penta MD2020, MD2020B
-   Volvo Penta MD2030, MD2030B
-   Volvo Penta MD2040, MD2040B
-   Volvo Penta D2002AG
-   Volvo Penta D2003AG
-   Volvo Penta TAMD22P-B

## Details

- **Price:** 50.64 AUD
- **Vendor:** Volvo Penta
- **Type:** Fasteners & Fixings
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 50.64 AUD | In stock |

## Images

- 851858 Hex Socket Screw | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/851858-hex-socket-screw-genuine-volvo-penta)
> Updated: 2026-09-19