8 AWG One Hole Copper Lug | 5/16″ Stud | Red Color Code Die 21
PRODUCT PARAMETERS
-
99.9% Pure T2 Copper: Seamless construction for maximum electrical conductivity and superior performance in critical circuits.
-
Red Color Coded (Die Index 21): Specifically engineered for 8 AWG wire, ensuring quick identification and perfect matching with Die 21 tools.
-
Precision 5/16" Stud Hole: Optimized for standard electrical mounting, providing a secure and low-resistance connection to power sources.
-
Integrated Inspection Window: Built-in port allows for instant visual confirmation that the 8 STR cable is fully inserted before crimping.
-
Compact Short Barrel Design: Space-saving engineering ideal for tight electrical boxes, control panels, and limited-access applications.
-
Advanced Electro-Tin Plating: Provides a durable protective layer against oxidation, corrosion, and environmental degradation.
Description
Buy high-purity 8 AWG Copper Lugs at XLUIG. Our Red color-coded (Die 21) terminals feature a 5/16″ stud, short barrel, and inspection window for 8 STR wire. Factory-direct wholesale pricing.
Product Features & Engineering Logic
| Technical Feature | Advantage | Benefit |
| Seamless T2 Copper Body | Eliminates weak points and prevents splitting during high-pressure hydraulic crimping. | System Reliability: Prevents electrical failure and overheating, ensuring long-term safety for industrial equipment. |
| Red Code / Die Index 21 | Standardizes tool selection and aligns with international visual identification codes. | Installation Speed: Reduces field errors and labor time, allowing contractors to complete projects faster and more accurately. |
| Built-in Inspection Window | Enables visual inspection of the conductor seating depth without needing specialized measuring tools. | Safety Verification: Provides peace of mind and simplifies QA audits by proving a structurally sound internal connection. |
| Industry-Standard 5/16″ Hole | Perfectly sized for 5/16 inch mounting bolts, ensuring maximum surface area contact and mechanical torque. | Minimal Power Loss: Optimizes electrical transmission and reduces voltage drop across the connection point. |
Dimensions

Data Overview
| XLUIG Model No. | Wire Size (AWG) | Stud Hole Size | Barrel Type | Color Code | Die Index | W (mm) | L (mm) |
| XL-8-08-1 | 8 AWG | 5/16″ | Short Barrel | Red | 21 | 12.2 | 29.5 |
| XL-8-06-1 | 8 AWG | 1/4″ | Short Barrel | Red | 21 | 10.8 | 27.2 |
| XL-8-10-1 | 8 AWG | 3/8″ | Short Barrel | Red | 21 | 14.5 | 32.1 |
| XL-8-08-1L | 8 AWG | 5/16″ | Long Barrel | Red | 21 | 12.2 | 38.4 |
FAQs
Q: Why is the “Red” color code used for 8 AWG copper lugs?
A: The Red color code is the industry standard for 8 AWG wire. It allows installers to quickly match the terminal with the correct Die Index 21 crimping tool. XLUIG strictly adheres to these international standards to ensure a compliant and gas-tight connection for your electrical systems.
Q: What is the specific purpose of the inspection window on XLUIG lugs?
A: The inspection window is a critical safety feature that allows you to visually confirm that the 8 STR conductor has been fully inserted into the barrel. This prevents “partial insertion” errors which could lead to overheating or electrical arc hazards.
Q: Are XLUIG 8 AWG lugs suitable for marine or outdoor use?
A: Yes. All XLUIG lugs undergo a professional electro-tin plating process. This provides excellent resistance to corrosion and oxidation, making them ideal for challenging environments such as marine applications, industrial panels, and outdoor distribution boxes.
Product Attributes
| Property | Details |
| Industry | Industrial Fastener |
| Brand Name | XLUIG (Kunshan Xinluan New Material Technology Co., Ltd) |
| Place of Origin | Jiangsu, China |
| Certificate | ISO 9001:2015 Certified |
| Thread Size | Customized sizes available |
| MOQ | 5,00 Pieces |
| OEM / ODM | Support (Based on technical drawings) |
| Samples | Available upon request |
Supply Ability
| Service Items | Details & Specifications |
| Packaging | Small boxes, plastic bags, bulk cartons, and wooden pallets |
| Supply Ability | 50,000,000 Piece/Pieces per Month |
| Transportation | Land, Ocean, Air, and Express Delivery |
| Port of Loading | Shanghai, Ningbo, Tianjin |
| Payment Type | T/T |
| Incoterm | FOB, CIF, EXW, DDP |