NSI Industries L256B - 1 Hole Long Barrel Copper Compression Lug for Flexible Copper Cable 2 AWG- 5/16" Bolt Compression lugs for flexible copper cables are connects that have a gentle, continuous flared end to ensure ease of cable insertion of flexible and extra flexible cables such as locomotive, welding, mining cable and more. The flared end also reduces pressure on the cable strands after installation and protects them from chafing and breakage as a result of cable movement. Tin-plated for corrosion resistance. Rated 600 volts for copper cables only. Single mounting hole.
NSI Industries

L256B

UPC: 662381337016

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Overview

The NSI Industries L256B is a UL486A-listed, tin-plated copper compression lug designed for secure, long-term connections with flexible copper cables. Engineered for 2 AWG to 6 AWG flexible copper cables (Class B or C building wire), this 1-hole long barrel lug features a gently flared entry to simplify cable insertion while minimizing strand damage during installation. The continuous flare reduces pressure on cable strands, preventing chafing and breakage from movement after installation. With a 5/16" bolt size and 600V voltage rating, the L256B is ideal for demanding applications including locomotive wiring, welding cables, mining equipment, and other high-vibration environments. Constructed from high-conductivity copper tubing and tin-plated for corrosion resistance, the L256B ensures low contact resistance and reliable performance in harsh conditions. The lug is color-coded brown for easy identification and includes a die index marking for proper tooling alignment. With a temperature rating of 90°C and compliance with UL467 for grounding and bonding (sizes 8 AWG–3/0 AWG), this lug meets stringent electrical safety standards. The barrel dimensions are optimized for expanded wire range when installed with NSI’s N12ID dieless compression tool, accommodating a wider range of cable sizes without compromising integrity. Applications include industrial machinery, power distribution systems, renewable energy installations, and transportation electrification. The L256B is not suitable for aluminum cables or applications exceeding 600V without additional voltage stress relief measures. For installations above 2000V, consult the cable manufacturer’s instructions for proper stress relief. NSI Industries provides this lug as a durable, cost-effective solution for professionals requiring dependable, code-compliant connections in critical infrastructure.
  • UL486A-listed and UL467 compliant for grounding/bonding (8 AWG–3/0 AWG)
  • Tin-plated copper construction for corrosion resistance and low contact resistance
  • Gently flared entry reduces cable strand damage and chafing during installation
  • 5/16" bolt size, 600V rated, 90°C temperature rating
  • Color-coded brown, die-indexed for tool alignment and expanded wire range compatibility

Specifications

Application
Terminate, Splice, Tap Power Connectors
Cable Size
# 2 AWG (STR)
Color
Brown
Environmental Conditions
90 C
Finish
Tin Plated
Material
Copper
Mounting
5/16 Mounting Hole
Number Of Holes
1
Size
L=2.07 - W=.602 - OD=.421 - ID=.315
Special Features
# 2 AWG (STR) - 5/16 Mounting Hole
Standard
UL486A/B, UL467 (8 AWG -3/0 AWG)
Stud Size
5/16 IN
Type
Long Barrel - One Hole - Belled End
Voltage Rating
600 V
Warranty
1 Year
Package Dimensions (L x W x H)
2.07 IN x 0.6 IN x 0.421 IN
Package Dimensions (L x W x H)
5.2578 cm x 15.24 mm x 10.6934 mm
Package Weight (Imperial)
1.750 L
Package Weight (Metric)
0.794 kg
1 Hole Long Barrel Copper Compression Lug 2 AWG - 5/16" Bolt Long Barrel Copper Compression Lugs are produced from high conductivity copper tubing. They are tin-plated to provide corrosion low contact resistance. Marked with die index and color coded for easy reference. Listed for 35KV maximum when properly installed and to cable manufacturer instructions. Temperature rating 90 degrees C. .

L256

1 Hole Long Barrel Copper Compression Lug 2 AWG - 5/16" Bolt Long Barrel Copper Compression Lugs are produced from high conductivity copper tubing. They are tin-plated to provide corrosion low contact resistance. Marked with die index and color coded for easy reference. Listed for 35KV maximum when properly installed and to cable manufacturer instructions. Temperature rating 90 degrees C. .
Copper Two-Way Splice, Long Barrel, Max 35kV, Wire Size #2 AWG, Length 1.88 Inches, Diameter 0.43 Inches, Tin Plated, Die Code 33, Die Color Code Brown

54807

Copper Two-Way Splice, Long Barrel, Max 35kV, Wire Size #2 AWG, Length 1.88 Inches, Diameter 0.43 Inches, Tin Plated, Die Code 33, Die Color Code Brown
Copper metric butt splice, standard barrel, 240mm wire.

SCMS240-X

Copper metric butt splice, standard barrel, 240mm wire.

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