Conversions Tech Copper Compression Lug – 4/0 AWG, 5/16" Stud (Non-Tinned / Bare Copper)
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SKU: 6221-040-0516-NP
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Conversions Tech Copper Compression Lug – 4/0 AWG, 5/16" Stud (Non-Tinned / Bare Copper)
The Conversions Tech Copper Compression Lug is a seamless tubular, heavy-duty electrical connector engineered for 4/0 AWG copper conductors and a 5/16" stud termination. Manufactured from high-purity bare (non-tinned) copper, this lug provides maximum electrical conductivity and dependable mechanical strength for high-current power distribution in controlled or indoor environments.
- 4/0 AWG copper conductor range for very high-current cabling
- 5/16" stud ring tongue for compact, secure bolted connections
- Seamless tubular barrel ensures uniform crimp compression and low resistance
- Bare copper (non-tinned) finish for maximum conductivity
- Rated up to 600V for AC and DC power distribution
- Designed to withstand vibration and thermal cycling when properly installed
High-Current 4/0 Copper Lug for 5/16" Stud Terminations
This 4/0 copper compression lug features a seamless tubular barrel that compresses evenly around the conductor, producing a gas-tight, low-resistance termination. The result is excellent current transfer, strong pull-out resistance, and long-term reliability in high-current electrical systems.
The 5/16" stud size is commonly used on battery terminals, bus bars, grounding points, and distribution blocks where space constraints or smaller hardware dictate a more compact lug footprint. The non-tinned copper construction makes this lug ideal for controlled indoor environments where corrosion protection is not required.
Key Features
- Seamless tubular copper barrel for consistent compression and low joint resistance
- Non-tinned (bare) copper construction for maximum electrical conductivity
- Designed for 4/0 AWG copper conductors
- 5/16" stud hole for secure bolted terminations
- 600V maximum voltage rating
- High mechanical strength for vibration and thermal cycling environments
Technical Specifications
| Wire Range | 4/0 AWG |
|---|---|
| Stud Size | 5/16" |
| Stud Hole (Nominal) | 0.328" |
| Material | Seamless Copper (Non-Tinned) |
| Finish | Bare Copper |
| Maximum Voltage | 600V |
| Construction Type | Seamless Tubular |
| Application | Copper Cable Only |
Dimensions (inches)
For this 4/0 AWG seamless tubular lug series, the lug body and barrel dimensions remain consistent across stud sizes. Only the stud hole diameter changes for the 5/16" stud version.
| Overall Length (L) | 2.360" |
|---|---|
| Width (W) | 1.000" |
| Pad Thickness (T) | 0.114" |
| Tube Thickness (TT) | 0.059" |
| Barrel Length (BL) | 0.840" |
| Barrel Inside Diameter (ID) | 0.551" |
| Pad Length | 1.100" |
| Strip Length | 0.830" |
| Stud Hole (Nominal) | 0.328" |
Typical Applications
- Battery cables and high-current DC systems
- Bus bars, power distribution blocks, and switchgear
- Grounding and bonding systems
- Industrial and commercial electrical panels
- Controlled-environment electrical rooms
Installation Notes
- Use a hydraulic or dieless compression crimp tool rated for 4/0 AWG copper lugs.
- Strip insulation to a length of 0.830" prior to crimping.
- For copper conductors only; do not use with aluminum wire.
- For corrosive or outdoor environments, use a tin-plated lug or seal with adhesive-lined heat shrink.
Frequently Asked Questions (FAQs)
What wire size is this lug designed for?
It is designed specifically for 4/0 AWG copper conductors.
What stud size does this lug fit?
This lug fits a 5/16" stud with a nominal hole diameter of 0.328".
Is this lug tinned?
No. This version is non-tinned (bare copper).
Why choose bare copper?
Bare copper provides maximum conductivity and is ideal for controlled or indoor environments.
What voltage rating does this lug support?
Rated up to 600V for AC and DC applications.
Do dimensions change across stud sizes?
No. Barrel and lug body dimensions remain the same; only the stud hole diameter changes.
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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.
