Ancor 4 Gauge 5/16-Inch Post Heavy Duty Lugs 100-Pack

The Ancor 4 AWG Heavy-Duty Lugs are a 100-pack in annealed tinned copper with a seamless barrel, for 5/16-inch studs.

Four AWG lugs match the cable used for windlass feeds, sub-panel supplies and charging runs, which is the most common heavy circuit size on a recreational boat. A 100-pack suits a shop rather than one installation, since a single boat rarely needs more than a dozen at this gauge.

The lug must match the cable gauge exactly. A 2 AWG barrel crimped onto 4 AWG leaves the strands loose and the joint heats under load. Sizing down is impossible: the cable simply will not enter a smaller barrel.

Heavy-duty annealed tinned copper supports strong current flow while resisting corrosion from salt and moisture. The seamless barrel gives mechanical strength after crimping, and the closed-end design keeps moisture out of the joint from the terminal side. Explore more battery lugs and ring terminals.

• 4 AWG is the most common heavy circuit size
• A 100-pack suits a shop, not one boat
• The lug must match the cable gauge exactly
• An oversized barrel leaves strands loose