Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

3G Electric
3M Two-Hole Compression Lug, 4 AWG, 1/2 in Stud, Long Copper Barrel - Two-Hole Compression Lugs
3MTwo-Hole Compression Lugs

3M Two-Hole Compression Lug, 4 AWG, 1/2 in Stud, Long Copper Barrel

The 3M Compression Lugs (MPN 31122) are two-hole compression lugs designed for 4 AWG stranded wire. These long copper barrel lugs feature a 1/2 in stud size and do not include an inspection hole.

SKU 3G-OTH-18766

Brand
3M
Item
Two-Hole Compression Lug, 4 AWG, 1/2 in Stud, Long Copper Barrel
Part Number
31122
Category
Two-Hole Compression Lugs
Available to Order
Also known as:311223M
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

3M
Manufacturer Part Number
31122
Type
Stranded Wire, Long, Copper Barrel
Stud Size
1/2 in
For Wire Type
Stranded
For Wire Sizes
4 AWG
Inspection Hole
No

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

3M Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The 3M Compression Lugs (MPN 31122) are two-hole compression lugs designed for 4 AWG stranded wire. These long copper barrel lugs feature a 1/2 in stud size and do not include an inspection hole.

Frequently Asked Questions

What are 3M Compression Lugs MPN 31122 used for?

3M Compression Lugs MPN 31122 are used to terminate 4 AWG stranded copper wire in industrial power distribution, panel building, and heavy equipment connections. The two-hole, long-barrel design provides a secure, low-resistance termination for high-current applications up to the ampacity of 4 AWG wire.

What are the specifications of 3M Compression Lugs 31122?

The 3M Compression Lug 31122 is a two-hole lug for 4 AWG stranded wire with a 1/2 in stud size. It has a long copper barrel and no inspection hole. The lug is made by 3M and is designed for crimp termination using standard compression tools.

Where to buy 3M Compression Lugs 31122 worldwide?

3G Electric supplies 3M Compression Lugs 31122 to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact 3G Electric for a quote and lead time on this 3M part number.

How to install 3M Compression Lugs 31122?

To install 3M Compression Lugs 31122, strip 4 AWG stranded wire to the barrel depth, insert the wire fully, and crimp using a tool matched to the lug's die index. No inspection hole is provided, so verify full insertion by marking the wire. Follow 3M's crimp specifications for a reliable connection.

Used in

Common applications for 3M
Electrical maintenance — 3M Super 33+ electrical tape for insulating splices and bundling wires in control circuits.
Mining cable repair — 3M molded resin pouch for coating cable jackets in mine and portable cable applications.
Utility cable splicing — 3M cold shrink splice kit rated for 15 kV for insulating and repairing power cables.
Industrial wire harnessing — 3M 2520 series varnished cotton cloth tape for abrasion resistance in wire harnessing.
Structural bonding — 3M DP8005 acrylic adhesive for bonding plastics, metals, and composites in assembly operations.
Cable protection — 3M heat shrink tubing for sealing and protecting electrical connections from moisture and abrasion.
Not sure this is the right part? Photo-identify it→

3M Products

3G Electric supplies 3M two-hole compression lugs. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

Compatible alternatives & equivalents

Cross-referenced by specification & description
Two-hole compression lug for terminating 2 AWG stranded copper wire. Features a long copper barrel and 1/2 in stud size. No inspection hole. Used in power distribution, panel building, and heavy equipment wiring requiring secure crimp connections
3M
Two-hole compression lug for terminating 2 AWG stranded copper wire. Features a long copper barrel and 1/2 in stud size. No inspection hole. Used in power distribution, panel building, and heavy equipment wiring requiring secure crimp connections
Two-hole compression lug for terminating 500 kcmil stranded copper wire. Features a long copper barrel and 1/2 in stud size. No inspection hole. Used in power distribution, switchgear, and heavy machinery connections
3M
Two-hole compression lug for terminating 500 kcmil stranded copper wire. Features a long copper barrel and 1/2 in stud size. No inspection hole. Used in power distribution, switchgear, and heavy machinery connections
Two-hole compression lug for terminating 3/0 AWG stranded copper wire. Features a long copper barrel and 1/2-inch stud size. Suitable for power distribution, motor controls, and switchgear applications requiring secure, low-resistance connections
3M
Two-hole compression lug for terminating 3/0 AWG stranded copper wire. Features a long copper barrel and 1/2-inch stud size. Suitable for power distribution, motor controls, and switchgear applications requiring secure, low-resistance connections
Two-hole compression lug for terminating 4/0 AWG stranded copper wire. Features a long copper barrel and 1/2-inch stud size. No inspection hole. Used in power distribution and heavy equipment connections requiring secure crimp terminations
3M
Two-hole compression lug for terminating 4/0 AWG stranded copper wire. Features a long copper barrel and 1/2-inch stud size. No inspection hole. Used in power distribution and heavy equipment connections requiring secure crimp terminations
Two-hole compression lug for 400 kcmil stranded copper wire. Long copper barrel design with 1/2 in stud size, no inspection hole. Used for permanent terminations in power distribution and heavy equipment
3M
Two-hole compression lug for 400 kcmil stranded copper wire. Long copper barrel design with 1/2 in stud size, no inspection hole. Used for permanent terminations in power distribution and heavy equipment
Two-hole compression lug for terminating 1/0 AWG stranded copper wire. Features a 1/2-inch stud size and a long copper barrel without inspection hole. Used in power distribution, switchgear, and motor control applications for secure, low-resistance connections
3M
Two-hole compression lug for terminating 1/0 AWG stranded copper wire. Features a 1/2-inch stud size and a long copper barrel without inspection hole. Used in power distribution, switchgear, and motor control applications for secure, low-resistance connections

More from 3M

View all 3M parts →
Two-hole compression lug for terminating 300 kcmil stranded copper wire. Features a long copper barrel and 1/2 in stud size. No inspection hole. Used in power distribution, switchgear, and panel building for secure, low-resistance connections
3M
Two-hole compression lug for terminating 300 kcmil stranded copper wire. Features a long copper barrel and 1/2 in stud size. No inspection hole. Used in power distribution, switchgear, and panel building for secure, low-resistance connections
Two-hole compression lug for terminating 750 kcmil aluminum conductors. Features a standard aluminum barrel and accepts a 1/2 in stud. Used in power distribution, switchgear, and heavy machinery installations
3M
Two-hole compression lug for terminating 750 kcmil aluminum conductors. Features a standard aluminum barrel and accepts a 1/2 in stud. Used in power distribution, switchgear, and heavy machinery installations
Two-hole compression lug for terminating 2 AWG wire. Features a 1/2 in stud size and standard aluminum barrel. Suitable for use in electrical panels, switchgear, and motor control centers requiring secure, vibration-resistant connections
3M
Two-hole compression lug for terminating 2 AWG wire. Features a 1/2 in stud size and standard aluminum barrel. Suitable for use in electrical panels, switchgear, and motor control centers requiring secure, vibration-resistant connections
Two-hole compression lug for terminating 600 kcmil stranded copper wire. Features a long copper barrel with 1/2 in stud size and no inspection hole. Suitable for high-current electrical connections in switchgear, panel boards, and heavy machinery
3M
Two-hole compression lug for terminating 600 kcmil stranded copper wire. Features a long copper barrel with 1/2 in stud size and no inspection hole. Suitable for high-current electrical connections in switchgear, panel boards, and heavy machinery
Two-hole compression lug for terminating 1 AWG stranded copper wire. Features a long copper barrel and 1/2 in stud size. No inspection hole. Suitable for power distribution and heavy equipment connections
3M
Two-hole compression lug for terminating 1 AWG stranded copper wire. Features a long copper barrel and 1/2 in stud size. No inspection hole. Suitable for power distribution and heavy equipment connections
Two-hole compression lug for terminating 750 kcmil stranded copper wire. Features a long copper barrel and 1/2 in stud size. No inspection hole. Suitable for high-capacity electrical connections in switchgear, panelboards, and heavy machinery
3M
Two-hole compression lug for terminating 750 kcmil stranded copper wire. Features a long copper barrel and 1/2 in stud size. No inspection hole. Suitable for high-capacity electrical connections in switchgear, panelboards, and heavy machinery
Two-hole compression lug for terminating 2/0 AWG stranded copper wire. Features a long copper barrel and 1/2-inch stud size. Suitable for use in power distribution, switchgear, and motor control circuits. No inspection hole
3M
Two-hole compression lug for terminating 2/0 AWG stranded copper wire. Features a long copper barrel and 1/2-inch stud size. Suitable for use in power distribution, switchgear, and motor control circuits. No inspection hole
Two-hole compression lug for terminating 4/0 AWG wire to a 1/2-inch stud. Features a standard aluminum barrel. Used in electrical panels, switchgear, and heavy machinery for power distribution and grounding connections
3M
Two-hole compression lug for terminating 4/0 AWG wire to a 1/2-inch stud. Features a standard aluminum barrel. Used in electrical panels, switchgear, and heavy machinery for power distribution and grounding connections

Customer reviews

No reviews yet — be the first

Questions & answers

No questions yet — ask us the first