Groco SW-2531 Bronze Spanner Wrench / Deck Plate Key
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
Groco SW-2531 Bronze Spanner Wrench / Deck Plate Key
A heavy-duty bronze spanner wrench designed to open and close screw-out deck plates and strainer caps on your boat. Built from solid bronze for lasting corrosion resistance, this tool handles a wide range of fittings and is a reliable addition to any onboard toolkit.
Key Features
- Services deck plates and strainer caps with key holes up to 7" apart
- Pins fit key holes up to 5/16" diameter
- Solid bronze construction — corrosion-resistant and built for marine environments
- Spanner-style design provides solid grip and torque for stubborn fittings
- Compatible with most standard screw-out deck plate styles
Parts Desk Insights
Best use case: This is the right tool when you need a durable, long-lasting wrench for regularly serviced deck plates or strainer caps — particularly on vessels where bronze fittings are common. The 7" span and 5/16" pin diameter make it compatible with a wide range of standard marine deck plates. If you’re looking for a more universal plastic key for occasional use, see the Universal Deck Plate Key or the Deck Plate Key. For the deck plates themselves, browse our Marine Deck Hatches & Access Ports collection.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.