Ancor Marine Grade™ Tinned Battery Lugs – #4 AWG Cable, 5/16" Fastener, 25-Pack (242255)
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
Professional-Grade Tinned Copper Battery Lugs – #4 AWG, 5/16" Stud, Bulk 25-Pack
These Ancor Marine Grade™ tinned copper battery lugs are built for #4 AWG cable terminations on 5/16" stud fasteners — a size commonly found on smaller battery terminals, alternator output studs, and mid-draw distribution equipment throughout a vessel’s electrical system. Pure copper construction delivers maximum current flow, while tin plating provides lasting protection against corrosion in salt air and wet environments. The closed-end barrel seals the cable entry against moisture intrusion for a connection that holds up over time.
The 25-pack format is designed for marine electricians, boatyards, and full rewire projects where multiple terminations of the same size are needed in a single job.
Compatible Applications
- Smaller battery terminal connections on #4 AWG cable with 5/16" studs
- Alternator output and charge cable terminations
- Bilge pump, blower, and auxiliary equipment circuits
- Navigation and electronics panel feeds
- Mid-draw DC distribution wiring on #4 AWG runs
Product Details
- Cable Size: #4 AWG
- Fastener Size: 5/16"
- Material: Pure tinned copper
- Barrel: Closed-end to seal out moisture
- Pack Quantity: 25 lugs
- Part Number: 242255
Also available in #4 AWG with other fastener sizes:
- 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)
For a full range of lug sizes in one kit, see the Ancor Marine Grade® Tinned Copper Battery Lug Kit – 100-Piece Assortment (255101).
🔧 Parts Desk Insights
Best use case: This is the right bulk lug when you’re terminating #4 AWG cable to 5/16" stud terminals — common on smaller battery posts, alternator output studs, and mid-draw distribution equipment. The 5/16" fastener is larger than the 1/4" and #10 sizes but smaller than the 3/8" used on heavy battery banks, so confirm your stud size before ordering. At 25 pieces, this pack is priced for volume work on a full wiring project. If you only need one or two connections, a smaller pack may be more economical. Tin plating makes soldering straightforward and ensures long-term conductivity even in damp bilge environments.
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.