Ancor Marine Grade™ Tinned Battery Lugs – 3/0 AWG Cable, 5/16" Fastener, 10-Pack (242715)
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Ancor Marine Grade™ Tinned Battery Lugs – 3/0 AWG, 5/16" Fastener, 10-Pack
Heavy-duty tinned copper lugs for the most demanding high-current marine wiring applications. At 3/0 AWG, these lugs are built for serious amperage — large inverter installations, high-capacity battery banks, commercial windlass systems, and twin-engine setups where voltage drop and heat resistance are critical. The 5/16" fastener fits the standard terminal studs found on most marine battery posts and bus bars, and the 10-pack provides the right quantity for a full multi-connection install without overstocking. Pure copper construction, tinned finish, and a closed-end barrel deliver the corrosion resistance and moisture protection that saltwater environments demand.
Key Features
- Pure copper construction for maximum current flow
- Tinned finish for corrosion resistance and easy soldering
- Closed-end barrel seals out moisture at the crimp
- Fits 3/0 AWG cable with a 5/16" fastener
- 10-pack — right-sized for multi-connection professional installs
Compatible Applications
- Large inverter and shore power cabling
- High-capacity battery bank interconnects and main feeds
- Commercial windlass and high-draw anchor winch systems
- Twin-engine and multi-battery bank installations
- Bus bar and distribution panel connections with 5/16" studs
- Commercial and professional marine electrical installs
Parts Desk Insights
Best use case: 3/0 AWG is the right gauge when you’ve outgrown 2/0 — typically for large inverters (2000W+), high-capacity lithium battery banks, or commercial-grade windlass systems where the cable run is long or the load is sustained. The 5/16" fastener covers most standard marine battery terminals and bus bar studs. For smaller jobs needing just a couple of lugs, see the 3/8" Fastener, 2-Pack (252716) or 1/2" Fastener, 2-Pack (252717). For even heavier loads, step up to the 4/0 AWG 3/8" 2-Pack (252726). For a mixed assortment across gauges, the Ancor 100-Piece Lug Kit (255101) is a great shop staple.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 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.