Ancor 312603 Marine Grade™ Heat Shrink Ring Terminals, 3/8" Fastener, 12-10 Wire, Yellow, 3/Pk
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You have 30 days to request a return. All sale items are final sale.
Ancor Marine Grade™ adhesive-lined heat shrink ring terminals are designed to create a tight, sealed electrical connection for marine wiring. This set is for 12–10 AWG wire with a 3/8" fastener size.
Key Features
- Marine Grade™ heat shrink ring terminals for sealed, vibration-resistant terminations
- Adhesive lined heat shrink sleeve helps form a tight seal
- Tinned copper construction supports corrosion resistance
- Color-coded yellow insulation for 12–10 AWG wire range
Intended Use
- Marine wiring and battery cable terminations
- Adding or replacing ring terminals in boats, RVs, and other vibration-prone 12V/24V systems
- General electrical connections requiring a sealed ring terminal connection (proper crimping required)
Product Details
- Brand / Series: Ancor Marine Grade™
- Part Number / SKU: 312603
- Package Quantity: 3/Pk
- Terminal Type: Heat shrink ring terminals
- Wire Range: 12–10
- Fastener Size: 3/8"
- Color: Yellow
- Variant SKU: 639-312603
- Barcode: 091887316209
- Product Type: Heat Shrink & Adhesive Lined
Parts Desk Insights
Best Use Case: Best for marine electrical connections where you want a ring terminal plus adhesive-lined heat shrink to help seal out moisture and resist vibration.
Common Issues: Common install issues come from incorrect wire gauge, an incomplete crimp, or not heating the sleeve evenly enough to activate the built-in adhesive. Always confirm the terminal matches your wire range and verify the insulation sleeve fully shrinks over the connection.
Related Products & Accessories
- Browse Heat Shrink & Adhesive Lined - Shop similar adhesive-lined heat shrink connectors and terminals.
- Browse Electrical & Accessories - Find matching marine electrical parts and wiring connection supplies.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 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.