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Product Information
The Mares Deadbolt Screw Round is a stainless steel round-head screw set used to attach additional accessories to the Mares XR harness, sold as a pack of 4 pieces in a choice of 6MM or 9MM head size.
Who it is for
This accessory is for divers running a Mares XR harness who need to attach additional accessories to it. It is a simple hardware fix rather than a full kit, intended for divers configuring or expanding their existing XR rig.
Key details
- Material: stainless steel
- Head style: round head
- Head size options: 6MM and 9MM
- Quantity: 4 pieces per pack
- Each piece consists of 1 screw and 1 nut
Compatibility and sizing
These screws are designed to attach additional accessories to the Mares XR harness, the backplate and harness system used in Mares' technical and sidemount diving line. The screw is offered in 6MM and 9MM head sizes.
What's in the box
- 4 round-head screws
- 4 matching nuts (1 screw + 1 nut per piece)
DiveCatalog.com is an authorized Mares dealer and a dive shop in Irvine, California, operating since 2003. Call 888-701-4017 or chat with us if you need help confirming the correct screw size for your XR harness setup.
- Stainless steel construction. Stainless steel round screw construction.
- Round head design. Stainless steel round-head screw construction.
- Two head sizes available. Offered in 6MM and 9MM head sizes.
- Sold as a 4-piece pack. Supplied as 4 pieces.
- Screw and nut pairing. Each of the 4 pieces consists of 1 screw and 1 nut.
- Built for the XR harness. Used to attach additional accessories to the Mares XR harness system.
- Sturdy fastening. Sturdy and durable screws for all types of fastening.
| Material | Stainless Steel |
| Head Style | Round |
| Head Size Options | 6MM, 9MM |
| Quantity | 4 pieces |
| Piece Composition | 1 Screw + 1 Nut per piece |
| Compatibility | Mares XR harness |
| MPN | 4175216MM |
- 4 round-head screws
- 4 nuts (1 screw + 1 nut per piece)
⚠️ 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 is the difference between the 6MM and 9MM Mares Deadbolt Screw Round?
The difference is the head size: Mares offers this round dead bolt screw in 6MM and 9MM head sizes.
What material is the Mares Deadbolt Screw Round made of?
It is made of stainless steel, according to Mares, and is used with the XR harness.
Will these screws work with harnesses other than the Mares XR?
These screws are designed and sold by Mares specifically to attach additional accessories to the Mares XR harness. Compatibility with other brands or harness systems is not confirmed, so for a different setup it is best to check fit before purchasing.
How many screws come in one pack?
Each pack contains 4 pieces. Every piece consists of 1 screw and 1 matching nut, giving you four complete screw and nut sets for attaching accessories to your XR harness.












