Ancor 321603 Marine Grade™ Heat Shrink Ring Terminals, 3/8" Fastener, 8 Wire, Red, 3/Pk
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
Ancor 321603 Marine Grade™ heat shrink ring terminals are built for corrosion resistance and secure, vibration-resistant electrical connections. The adhesive-lined sleeve helps form a tight seal over the splice area after heat shrinking.
Key Features
- Tinned copper for maximum current flow and corrosion resistance
- Adhesive lined heat shrink tubing shrinks to form a tight seal
- Designed to provide vibration and strain relief in marine wiring applications
Intended Use
- Marine electrical wiring and battery connections
- 8 AWG wire ring-terminal terminations to a 3/8" stud/fastener
Product Details
- Manufacturer Part Number: 321603
- Store SKU: 639-321603
- Type: Heat shrink ring terminals (marine grade)
- Fastener/Stud Size: 3/8"
- Wire Range: 8 wire (8 AWG)
- Color: Red
- Quantity: 3 terminals per package
Parts Desk Insights
Best Use Case: Use these adhesive-lined heat shrink ring terminals when you want a corrosion-resistant tinned-copper lug paired with a shrink sleeve that helps seal against moisture and withstand vibration in boat wiring.
Common Issues: For best results, ensure the terminal is properly crimped to the wire before shrinking, and verify the ring stud/fastener size matches your installation (3/8"). If you see poor sealing, it’s often due to insufficient heat to fully shrink the tubing or a crimp that doesn’t sit correctly.
Related Products & Accessories
- Browse Heat Shrink & Adhesive Lined Terminals - Explore other adhesive-lined heat shrink terminal styles and sizes for matching stud and wire gauge requirements.
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.