Ancor Marine Grade™ Tinned Battery Lugs — #4 AWG Cable, 1/2" Fastener, 2-Pack (252257)
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Ancor Marine Grade™ Tinned Copper Battery Lugs — #4 AWG, 1/2" Fastener, 2-Pack
Genuine Ancor Marine Grade™ tinned copper battery lugs for #4 AWG cable with a 1/2" stud hole — the largest common stud size in marine electrical systems. Built from heavy-duty pure copper for maximum current-carrying capacity, then tin-plated to resist the corrosion and oxidation that salt air and moisture drive into bare copper connections. The closed-end barrel seals out moisture at the cable tip, protecting the crimp from the inside out. The 2-pack is sized for single-connection jobs where a 1/2" stud is specified — large battery terminals, shore power inlets, and heavy-duty bus bars.
Compatible Applications
- Large marine battery terminal connections on #4 AWG cable
- Shore power inlet and distribution connections
- Windlass and bow thruster battery cable terminations
- Heavy-duty bus bar connections with 1/2" studs
- Engine starting and charging system cables
- High-draw accessory circuits requiring #4 AWG with a 1/2" stud lug
Product Specifications
- Part Number: 252257
- Brand: Ancor
- Cable Gauge: #4 AWG
- Fastener / Stud Size: 1/2"
- Material: Pure copper, tin-plated
- Barrel Style: Closed end (moisture-sealed)
- Quantity: 2 per pack
- UPC: 091887253108
Parts Desk Insights
The 1/2" stud is the largest common terminal size in marine electrical systems and is typically found on heavy-duty battery posts, large shore power connections, and commercial-grade bus bars. Confirm your stud size before ordering — the 3/8" (252256) and 5/16" (252255) versions of this lug are easy to mix up. The 2-pack is ideal for a single-connection repair or finishing a cable run. Always use a ratcheting lug crimper for a gas-tight crimp on #4 AWG — this gauge carries significant current and a loose crimp is a fire risk.
Related Products
- Ancor Marine Grade™ Tinned Battery Lugs – #4 AWG, 3/8" Fastener, 2-Pack (252256)
- Ancor Marine Grade™ Tinned Battery Lugs – #4 AWG, 5/16" Fastener, 2-Pack (252255)
- Ancor Marine Grade™ Tinned Battery Lugs – #4 AWG, #10 Fastener, 25-Pack (242253)
- Ancor Marine Grade™ Tinned Battery Lugs – #4 AWG, 1/4" Fastener, 25-Pack (242254)
- Ancor Marine Grade™ Tinned Battery Lugs – #4 AWG, 5/16" Fastener, 25-Pack (242255)
- Ancor Marine Grade Tinned Battery Lugs – #8 AWG, 1/2" Fastener, 10-Pack (242237)
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.