Ancor 312403 Marine Grade™ Heat Shrink Ring Terminals, 1/4" Fastener, 12-10 Wire, Yellow, 3/Pk
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
Ancor Marine Grade™ heat shrink ring terminals designed for secure, corrosion-resistant electrical connections—finished with adhesive-lined heat shrink tubing for improved sealing and strain relief.
Key Features
- Marine Grade™ heat shrink ring terminals
- Tinned copper for corrosion resistance
- Adhesive-lined heat shrink tubing shrinks to form a tight seal
- Helps provide vibration and strain relief in marine wiring applications
Intended Use
- Marine electrical wiring and connections
- Boat harness repairs and upgrades
- Systems that use crimped ring terminals (12–10 AWG conductor range)
Product Details
- Brand/Series: Ancor Marine Grade™
- Part Number/SKU: 312403 (SKU: 639-312403)
- Terminal Style: Heat Shrink Ring Terminal
- Fastener Size: 1/4" fastener
- Wire Range: 12–10 AWG
- Color: Yellow
- Quantity: 3/Pk
Parts Desk Insights
Best Use Case: Ideal for making crimped ring-terminal connections in exposed or vibration-prone marine wiring where you want the added sealing effect of adhesive-lined heat shrink.
Common Issues: For best results, ensure the conductor stripping/crimp tool is matched to the terminal for a solid crimp before shrinking. Also confirm the fastener size (1/4") matches the stud/bolt you’re connecting to so the ring seats correctly before final shrink.
Related Products & Accessories
- Browse heat shrink & adhesive lined wiring connectors - Find additional Ancor heat-shrink terminal styles and wire ranges for your project.
- Browse Wiring & Connections - Shop other marine electrical connection components for complete builds and repairs.
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.