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Celebrating over 50 years of Trusted Marine Service
Over 50 years of Trusted Marine Service

Ancor 312525 Marine Grade™ Heat Shrink Ring Terminals, 5/16" Fastener, 12-10 Wire, Yellow, 25/Pk

Original price $62.16 - Original price $62.16
Original price
$62.16
$62.16 - $62.16
Current price $62.16
Item locally warehoused

Free returns on all eligible orders

You have 30 days to request a return. All sale items are final sale.

Ancor 312525 Marine Grade™ heat shrink ring terminals deliver a corrosion-resistant, insulated ring connection designed to help resist vibration and strain in marine wiring applications.

Key Features

  • Marine Grade™ construction for harsh environments
  • Adhesive-lined heat shrink tubing helps form a tight, sealed connection
  • Tinned copper for corrosion resistance and reliable current flow
  • Heat-shrink design helps provide vibration and strain relief after installation

Intended Use

  • Marine and boat electrical wiring
  • 12–10 AWG stranded wire connections to a 5/16" stud/fastener
  • General DC/AC wiring projects requiring adhesive-lined, heat-shrink ring terminals

Product Details

  • Brand/Series: Ancor Marine Grade™
  • Terminal type: Heat Shrink Ring Terminals (adhesive lined)
  • Color: Yellow
  • Wire range: 12–10 AWG
  • Fastener/stud size: 5/16"
  • Ring terminal quantity: 25 per pack
  • Model/SKU: 312525 (store variant SKU: 639-312525)
  • Insulation/termination style: Adhesive-lined heat shrink tubing (shrinks to form a tight seal)
  • UPC/Barcode (variant): 091887316162

Parts Desk Insights

Best Use Case: Use for making a ring-lug connection on a 5/16" fastener/stud with 12–10 AWG wire, then shrink the tubing to seal the joint for improved resistance to moisture and vibration.

Common Issues: Most common installation problems are improper crimping (poor metal-to-metal connection) or not applying sufficient heat to fully activate the built-in adhesive and fully shrink the tubing—either can compromise the sealed, vibration-resistant seal.

Related Products & Accessories

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.

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