3/0 AWG Battery Cable Lug, Bare Copper, Long Barrel, 5/16" Stud | 6221-030-0516-NP
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SKU: 6221-030-0516-NP
55 in stock
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Goes with
At a glance: CT 6221-030-0516-NP — 3/0 AWG battery cable lug, 5/16" stud, bare copper. Seamless one-piece copper tube with a flared entry and stamped gauge, for battery, inverter, starter, and ground cable terminations. Crimp with a hex or hammer crimper, or solder.
Specifications
| Part number | 6221-030-0516-NP |
|---|---|
| Cable | 3/0 AWG copper, stranded (battery, welding, DLO, THHN); color code orange |
| Barrel | Long |
| Stud hole | 5/16", one hole, flat stackable pad |
| Finish | Bare Copper |
| Ratings | 600 V, UL 486A class; SAE/TMC-style heavy-duty battery lug construction |
Where it's used
- Battery bank series/parallel jumpers and battery-to-inverter cables (solar, RV, van, marine)
- Starter, alternator, and chassis ground cables on trucks, equipment, and fleet
- UPS and telecom DC plant battery strings
- Welding leads and portable power distribution
How to install
Strip to barrel depth, insert until strands bottom, crimp with a die matched to 3/0 AWG (hex preferred; two crimps on long barrels), slide adhesive-lined heat shrink over the barrel, and torque the stud nut per the equipment (1/4" 60 in-lb, 5/16" 120 in-lb, 3/8" 240 in-lb, 1/2" 500 in-lb typical). Sizing by inverter wattage and the ABYC rules: Battery Cable Lug Sizing Guide.
Volume and trade pricing through the trade desk.
Cross reference
| Our part | Quick Cable | Burndy HYLUG | Panduit Pan-Lug | Del City |
|---|---|---|---|---|
| 6221-030-0516-NP | 5957E | YA27L3 | LCA3/0-56 | 906665 |
Matched by size and type. Trademarks belong to their owners.
Why Pros Buy Direct from Conversions Tech
Quality-tested and UL Listed. Every product we carry is built to our specifications by certified manufacturing partners and quality-verified before it ships. UL/CSA listed where required, NEC compliant.
Cross-reference savings. Direct equivalents to Burndy, Hubbell, and other OEM part numbers at up to 30% less — same specs, same certifications, without the big-brand markup.
Real technical support. Need a torque spec, die reference, or an OEM quote? You’ll speak directly with the Conversions Tech engineering desk — not a script reader — for instant answers, custom kitting, and private-label options.
Fast US fulfillment. In-stock items ship same day from Oxnard, CA, by ground or expedited.
