Ancor 311603 Marine Grade™ Heat Shrink Ring Terminals, 3/8" Fastener, 16-14 Wire, Blue, 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 provide a moisture- and corrosion-resistant sealed connection for 16–14 AWG wire with a 3/8" fastener. This blue 3-pack (311603 / 639-311603) is designed for vibration and strain relief in marine wiring applications.
Key Features
- Marine Grade™ adhesive-lined heat shrink sleeve helps form a tight, sealed connection after shrink
- Tinned copper construction helps resist corrosion
- Designed for vibration and strain relief in harsh environments
- 3/8" ring terminal fastener size for secure mounting
- Wire range: 16–14 AWG
- Blue color coding
Intended Use
- Marine wiring and electrical connections requiring sealed, corrosion-resistant terminals
- Boat, yacht, RV, and trailer electrical harness work (general-purpose 16–14 AWG ring terminals)
Product Details
- Brand / Series: Ancor Marine Grade™
- Part Number: 311603
- SKU: 639-311603
- Terminal Type: Heat Shrink Ring Terminal
- Color: Blue
- Wire Range: 16–14 AWG
- Fastener Size: 3/8"
- Package Quantity: 3 terminals per pack
- Construction highlights: Tinned copper for corrosion resistance
- Sealing method: Heat-activated adhesive lined into the heat shrink sleeve to form a tight seal
Parts Desk Insights
Best Use Case: Use these when you want a crimped ring terminal connection that is insulated and sealed against moisture and vibration—common in marine splices, terminations, and harness-to-component connections.
Common Issues: Most sealing performance issues come from improper crimping or insufficient shrink coverage. Ensure the wire is stripped to the correct length for a solid mechanical crimp, and heat the sleeve evenly so the adhesive fully flows and the sleeve tightens around both the terminal and wire insulation.
Related Products & Accessories
- Browse Heat Shrink & Adhesive Lined - Pair with compatible marine heat shrink tubing/liners and matching wire-size terminals for complete sealed terminations.
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.