T-H Marine Screw-Down Deck Plate 8" OD – Black
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
T-H Marine Screw-Down Deck Plate – 8" OD, Black
A clean, low-profile solution for sealing larger access openings on your boat's deck. This 8" outer diameter screw-down plate threads directly into a standard deck plate ring, delivering a secure, watertight closure without the need for a key or removal tool. Built for durability in both freshwater and saltwater environments.
Key Features
- 8" outer diameter — fits standard large-format deck plate openings
- Matte black finish for a clean, unobtrusive look on any deck surface
- High-impact, UV-resistant poly construction resists cracking and fading
- Screw-down design threads securely into place — no key required
- Corrosion-proof and lightweight for long-term marine use
Parts Desk Insights
Best use case: This larger 8" plate is ideal for sealing bilge inspection ports, live well access points, or storage compartments that require occasional access but don't need to be opened regularly. The screw-down design makes it a better fit for semi-permanent closures than a twist-lock or screw-out style. If you need frequent, tool-free access to the same opening, a screw-out deck plate with a key is a more practical choice. For the smaller 5-5/8" version, see the T-H Marine Screw-Down Deck Plate 5-5/8" OD. To open screw-out style plates, see our Deck Plate Key or Universal Deck Plate Key.
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.