Color-Keyed Two-Hole Compressi...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$11.29
Color-Keyed Two-Hole Compression Lugs #4 AWG – Long Barrel Copper Lugs, Gray

Color-Keyed Two-Hole Compression Lugs #4 AWG Long Barrel Copper with Tinned Surface Protection, Gray

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Model: 256-30695-733

In Stock (leaves warehouse same day if ordered before 3pm ET)

$11.29
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Color-Keyed Two-Hole Compression Lugs #4 AWG Long Barrel Copper with Tinned Surface Protection, Gray

Professional copper compression lugs for reliable electrical connections

Color-Keyed compression lugs deliver professional-grade electrical connections with #4 AWG cable compatibility and long barrel design for enhanced conductor contact. These copper lugs feature tinned surface protection for corrosion resistance and gray color coding for easy identification. The two-hole straight connecting design with 1/2 inch stud size provides secure mounting and reliable performance in electrical installations up to 35kV maximum voltage rating.

Professional Features & Benefits

  • #4 AWG Cable Compatibility: Precisely sized for #4 AWG conductors ensuring proper fit and optimal electrical connection integrity.
  • Long Barrel Design: Extended barrel length provides increased conductor contact area for enhanced connection reliability and reduced resistance.
  • Copper Construction: High-conductivity copper material delivers excellent electrical performance and long-term durability in demanding applications.
  • Tinned Surface Protection: Protective tinning prevents corrosion and oxidation, extending service life in various environmental conditions.
  • Two-Hole Configuration: Dual mounting holes with 1/2 inch stud size provide secure mechanical connection and versatile installation options.
  • 35kV Voltage Rating: Maximum 35kV rating supports high-voltage applications with reliable insulation and safety performance.
  • UL Listed: UL E9809 standard compliance ensures safety and quality for professional electrical installations.

Technical Specifications

  • Brand Name: Color-Keyed
  • Cable Size: #4 AWG
  • Connecting Angle: Straight
  • Department: Electrical
  • Etim: EC001051 Tube cable lug for copper conductors
  • Igcc: 4532 Cable or wire lug
  • Inner Dimensions Inches: 4x4x3
  • Inner Quantity: 10
  • Insulated: N
  • Insulation: None
  • Number Of Fixing Holes: 2
  • Number Of Holes: 2
  • Outer Dimensions Inches: 16.2x4.5x5
  • Outer Quantity: 50
  • Product Color: Gray
  • Product Details: Long Barrel
  • Product Material: Copper
  • Slender Flange Model: N
  • Standard: UL E9809
  • Stud Size: 1/2 Inch
  • Surface Protection: Tinned
  • Unspsc: 39121405 Cable or wire lug
  • Voltage Rating: Max 35kV
  • Weight Uom: 11.63 lbs. per 100
  • With Sight Hole: N

Professional Applications

  • Electrical Panel Connections
  • Industrial Control Systems
  • Commercial Electrical Installations
  • Power Distribution Equipment
  • Motor Control Centers
  • Switchgear Applications
  • High-Voltage Electrical Systems

Why Choose Color-Keyed Quality?

Color-Keyed compression lugs provide reliable electrical connections with UL E9809 listing for safety assurance and tinned surface protection for long-term durability. The copper construction and professional-grade design deliver consistent performance in demanding electrical applications.

Manufacturer Resources

Spec Sheet

Product Specs

Brand Name:
Color-Keyed
Cable Size:
#4 AWG
Connecting Angle:
Straight
Department:
Electrical
Etim:
EC001051 Tube cable lug for copper conductors
Igcc:
4532 Cable or wire lug
Inner Dimensions Inches:
4x4x3
Inner Quantity:
10
Insulated:
N
Number Of Fixing Holes:
2
Number Of Holes:
2
Outer Dimensions Inches:
16.2x4.5x5
Outer Quantity:
50
Product Color:
Grey
Product Details:
Long Barrel
Product Material:
Copper
Slender Flange Model:
N
Standards:
UL E9809
Stud Size:
1/2 Inch
Surface Protection:
Tinned
Unspsc:
39121405 Cable or wire lug
Voltage Rating:
Max 35kV
Weight Uom:
11.63 lbs. per 100
With Sight Hole:
N

Color-Keyed 256-30695-733 – Frequently Asked Questions

1) Will a #4 AWG two-hole compression lug fit 1/2 inch mounting studs?
Yes. The Color-Keyed long barrel compression lug is drilled for 1/2 inch studs, with two fixing holes in a straight (in-line) configuration. That is the common bus and breaker pad stud size in panelboards and switchgear, so it lands on standard two-hole pads without redrilling. The two holes also stop the lug from rotating under torque, which a single-hole lug cannot do.
2) Can I use these gray #4 AWG lugs on medium voltage cable terminations?
The lug carries a maximum 35kV voltage rating, so it is suitable for terminations up to that class, including switchgear and power distribution work. Keep in mind the lug itself is uninsulated with no insulation sleeve, so all phase and ground clearances, plus any taping or shrink boot, are on the installer.
3) What does the gray color coding on a compression lug mean, and do I need a matching die?
Gray is the color-key that identifies this lug's conductor size and crimp die. Color-keyed lugs are crimped with the die of the same color in a hydraulic or battery compression tool, so a gray-coded die matched to #4 AWG is what you want in the tool. The barrel is sized for #4 AWG only; it will not hold a smaller or larger conductor correctly.
4) Is a long barrel lug worth it over a standard barrel for a #4 copper feeder?
The long barrel gives more contact length between the copper and the conductor, which lowers connection resistance and lets the lug take two crimps instead of one. On feeders and motor circuits that see thermal cycling or vibration, that extra crimp is the reason to choose it. Standard barrel versions are shorter and fine for lighter duty where space is tight behind the pad.
5) Are these copper lugs OK in a damp or outdoor enclosure?
The copper barrel is tin plated, which is the standard corrosion protection for copper lugs and slows oxidation in humid, coastal, or wash-down environments. Tin plating is also what makes a copper lug acceptable against aluminum bus, since bare copper on aluminum invites galvanic corrosion.
6) Is this lug UL listed for inspection sign-off?
Yes, the lug is built to UL E9809. That is the file reference an inspector or submittal reviewer will look for on a compression connector, so it can go into UL listed panel and switchgear work.
7) How much room do I need behind the pad for this lug?
The orderable configuration is the 1/2 inch stud version with an overall lug length of 4.18 inches, and the barrel runs straight off the pad rather than at an angle. Allow for that full length plus cable bending radius in tight gutter or wireway space.
8) Does this lug have a sight hole to check conductor insertion?
No sight hole on this one, so you cannot visually confirm the conductor has bottomed out in the barrel. Mark your strip length on the cable jacket before inserting and crimp to that reference instead.
9) Can I use a flange-style or slender-flange lug interchangeably with this one?
This is not a slender flange model, so the tongue is standard width. If your equipment pad has limited phase-to-phase spacing and the submittal calls for a narrow tongue, a standard flange lug may bridge too close to the adjacent phase. Check the pad spacing against the tongue width before committing to a full reel's worth of terminations.
How fast can I get the Color-Keyed 256-30695-733 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Color-Keyed 256-30695-733 come with a warranty?
Absolutely. The Color-Keyed 256-30695-733 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Color-Keyed 256-30695-733?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
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