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Product Information
The Mares PNG Thread Shaft 8 Zinc Coated is a replacement shaft built for 8 mm single-fin pneumatic spearguns, including the Mares Sten air rifle, made from PR-80 steel with a zinc coating and finished with a D8 thread. It is sold as a direct component replacement, not a complete speargun.
Who it is for
This shaft is for spearfishing divers who already own an 8 mm single-fin pneumatic speargun, such as the Mares Sten air rifle, and need to replace a bent, worn, or lost shaft rather than buy a new gun. It suits divers who want to keep their current speargun in service with a Mares replacement shaft.
Key details
- Diameter: 8 mm
- Material: PR-80 steel with a zinc coating for corrosion resistance
- Thread: D8 thread
- Type: Single-fin pneumatic speargun shaft
- Compatibility: 8 mm single-fin pneumatic spearguns, including the Sten air rifle
Compatibility and sizing
This shaft is designed for 8 mm single-fin pneumatic spearguns and is confirmed compatible with the Mares Sten air rifle. It is offered in five length options: 369, 519, 669, 869, and 984, so divers can match the replacement to the length of their current speargun shaft.
DiveCatalog.com is an authorized Mares dealer and a dive shop in Irvine, California, open since 2003. Call 888-701-4017 or start a chat if you need help confirming the correct length or fit for your speargun.
- 8 mm diameter matches single-fin pneumatic speargun shaft specifications.
- PR-80 steel construction for the shaft body.
- Zinc coating for corrosion resistance.
- D8 thread for compatible speargun hardware.
- Confirmed compatibility with the Sten air rifle and other 8 mm single-fin pneumatic spearguns.
- Five length options available: 369, 519, 669, 869, and 984.
- Direct replacement part for divers servicing an existing speargun.
| Brand | Mares |
| Type | Single-fin pneumatic speargun shaft |
| Diameter | 8 mm |
| Material | PR-80 steel, zinc coated |
| Thread | D8 |
| Compatibility | Sten air rifle, 8 mm single-fin pneumatic spearguns |
| Length options | 369, 519, 669, 869, 984 |
| MPN | 423259369 |
⚠️ WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.
Frequently Asked Questions
What spearguns is the Mares PNG Thread Shaft 8 compatible with?
This shaft is designed for 8 mm single-fin pneumatic spearguns and is confirmed compatible with the Mares Sten air rifle. It uses a D8 thread, so it is intended to match spearguns built for that same shaft specification rather than as a universal fit.
What length options does this shaft come in?
The Mares PNG Thread Shaft 8 Zinc Coated is available in five length options: 369, 519, 669, 869, and 984. Choosing the length that matches your current speargun shaft helps ensure proper fit and function.
What material is this speargun shaft made of?
The shaft is made from PR-80 steel with a zinc coating for corrosion resistance.
Is this a complete speargun or just a replacement part?
This is a replacement shaft only, not a complete speargun. It is intended for divers who already own an 8 mm single-fin pneumatic speargun, such as the Sten air rifle, and need to replace the shaft.
