# 996421 Flange Screw | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta flange screw weighing 0.093 kg. It supersedes part number 973097.

## ⚙️ Key Features

-   0.093 kg
-   Supersedes 973097
-   Also supersedes Volvo part numbers 100328, 902322, 955334 and 970964

## 🔌 Function

Clamps two components together, its integral flange spreading the clamp load so no separate washer is needed.

## ⚠️ Common Signs of Failure

-   Joint working loose or weeping at the face
-   Serrations under the flange worn smooth or bedded in
-   Head rounded off or the drive faces chewed
-   Thread stripped or galled on removal

## 🛠️ Service Notes

-   The integral flange spreads the load and forms the bearing face, so do not add a separate washer unless the workshop manual for your engine specifically calls for one
-   Clean the threads and the seating face before fitting — grit, paint or old sealant under the flange gives a false torque reading and the joint will slacken off in service
-   Where the flange is serrated it must bear directly on clean metal to grip; discard any screw with a deformed flange or damaged serrations rather than reusing it
-   Tighten to the torque and sequence given in the workshop manual for your engine, and treat the screw as single-use where the manual specifies an angle-tightened or stretch fastener
-   Check the thread in the receiving component at the same time; a pulled or corroded thread will not hold a new screw however carefully it is torqued

## 🔄 Supersession & Cross Reference

### OEM Supersession Chain

-   996421 → Supersedes 973097

## 📦 Condition

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

## Details

- **Price:** 14.14 AUD
- **Vendor:** Volvo Penta
- **Type:** Fasteners & Fixings
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 14.14 AUD | In stock |

## Images

- 996421 Flange Screw | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/996421-flange-screw-genuine-volvo-penta)
> Updated: 2026-10-09