Copper Long Barrel One Hole Compression Lug 4 AWG 5/16-inch Bolt Size
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SKU: 210-98066B
1000 in stock
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Conversions Tech 4 AWG Copper Compression Lug — 5⁄16″ Stud, Gray Color Code | UL / CE / RoHS / BABA Compliant
The Conversions Tech 4 AWG Copper Compression Lug provides secure, long-lasting conductor terminations for power and control systems. Featuring a 5⁄16-inch bolt hole, a long-barrel design, and a tin-plated finish, this lug ensures excellent conductivity, corrosion resistance, and mechanical strength. The gray color code quickly identifies 4 AWG compatibility, simplifying professional installations without a sight window.
Constructed from seamless electro-tin-plated copper and tested to UL / CE / RoHS standards, this connector withstands demanding industrial and renewable-energy environments. Manufactured under BABA (Build America, Buy America) compliance, it meets both U.S. sourcing and international quality standards.
Key Features
- Durable Copper Construction: High-conductivity copper ensures efficient current flow and long-term reliability.
- 4 AWG Conductor Size: Optimized for 4 AWG wire in medium-duty electrical circuits.
- 5⁄16″ Bolt Hole: Fits standard terminals and grounding pads for stable mechanical fastening.
- Long-Barrel Design: Improves pull-out strength and heat dissipation while providing easier crimping.
- Tin Plating: Protects against oxidation and corrosion for dependable service in harsh conditions.
- Gray Color Code: Simplifies wire-size identification and reduces installation errors.
- No Sight Window: Smooth barrel preferred where visual inspection openings aren’t required.
- Certified Quality: UL Recognized, CE Certified, RoHS & BABA Compliant for global and domestic projects.
Technical Specifications
| Material | Seamless Electro-Tin-Plated Copper |
| Color Code | Gray (4 AWG) |
| Overall Length (L) | 2.039 in (51.8 mm) |
| Barrel Length (L₁) | 1.125 in (28.6 mm) |
| Conductor Size | 4 AWG |
| Stud Size | 5⁄16 inch (7.9 mm) |
| Die Index | I-29 |
| Pad Size | 0.68″ L × 0.486″ W × 0.093″ Thk |
| Pad Holes | 1 |
| Barrel Type | Long Barrel / Chamfered Entry |
| Insulation ID / OD | 0.25″ ID × 0.343″ OD |
| Temperature Rating | 90 °C (194 °F) |
| Voltage Rating | 35 kV |
| Certifications | UL Recognized • CE Certified • RoHS Compliant • BABA Certified |
| Origin | USA *Stock product may be sourced elsewhere. |
Applications
- Medium-duty industrial and control wiring
- Automotive, marine, and transportation electrical systems
- Renewable-energy and battery-storage installations
- Panel boards, switchgear, and transformers
- Grounding and bonding assemblies
The Conversions Tech 4 AWG Copper Compression Lug (5⁄16″ Stud) delivers professional-grade performance with corrosion-resistant tin plating and a long-barrel design for maximum conductivity. UL, CE, RoHS, and BABA certifications ensure reliability and code compliance across all modern electrical systems.
4 Reasons Pros Buy Direct from Conversions Tech
Headquartered in business-friendly Wyoming, we design, test, and ship every product from inside the United States—delivering genuine “Made-for-America” quality without the big-box markup.
Our in-house team owns every CAD file, mold, and QA station behind our weatherproof boxes, conduit bodies, and power inverters. Vertical control means tighter tolerances, UL-listed safety, and up to 30 % lower cost than private-label imports.
Thousands of SKUs sit ready to go. Orders placed by 2 p.m. ship the same day, keeping contractors, OEMs, and distributors on schedule.
Need a torque spec or an OEM quote at dawn? You’ll speak directly with the Conversions Tech engineering desk—not a script reader—for instant answers, custom kitting, and private-label options.
Bottom line: For rugged, code-compliant electrical solutions shipped fast from a trusted U.S. source, choose Conversions Tech and build it right the first time.
