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3M Compression Lugs: 1/2 in Stud Size, 500 kcmil For Wire Sizes, Stranded Wire Type - One-Hole Compression Lugs
3MOne-Hole Compression Lugs

3M Compression Lugs: 1/2 in Stud Size, 500 kcmil For Wire Sizes, Stranded Wire Type

The 3M 31066 is a one-hole compression lug for 500 kcmil stranded copper wire, with a 1/2 in stud size. This long, copper lug is designed for stranded wire terminations.

SKU 3G-OTH-622837

Brand
3M
Item
Compression Lugs: 1/2 in Stud Size, 500 kcmil For Wire Sizes, Stranded Wire Type
Category
One-Hole Compression Lugs
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Technical Specifications

3M
Manufacturer Part Number
31066
Type
500 kcmil For Wire Sizes, Stranded Wire Type, Long, Copper
View Full Spec Sheet

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

Product Description

The 3M 31066 is a one-hole compression lug for 500 kcmil stranded copper wire, with a 1/2 in stud size. This long, copper lug is designed for stranded wire terminations.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

Frequently Asked Questions

What is the 3M 31066 compression lug used for?

The 3M 31066 one-hole compression lug terminates 500 kcmil stranded copper wire in industrial power distribution, switchgear, and heavy equipment connections. It provides a reliable, low-resistance joint for high-current applications up to the ampacity of 500 kcmil copper conductor.

What are the specifications of the 3M 31066 compression lug?

The 3M 31066 is a long, one-hole copper compression lug for 500 kcmil stranded wire with a 1/2 in stud size. It is made of copper, has no insulation support, and is designed for stranded wire only. The manufacturer part number is 31066.

Where to buy 3M 31066 compression lugs worldwide?

3G Electric supplies the 3M 31066 compression lug to customers worldwide. As a global industrial sourcing partner, we handle logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this 500 kcmil copper lug.

How to install a 3M 31066 compression lug on 500 kcmil wire?

Strip the 500 kcmil stranded copper wire to the lug barrel depth, insert the conductor fully, and crimp using the manufacturer-recommended die set for 3M lugs. Ensure the crimp tool applies the correct compression force to achieve UL-listed connections. Always follow 3M's installation instructions.

Used in

Common applications for 3M
Industrial process water filtration — 3M solid polypropylene cartridge (e.g., RT10Q16G20NN, 7 micron) for sediment removal in manufacturing lines.
Cooling tower pre-treatment — 3M string-wound cartridge (e.g., RT39B16G20NN, 30 micron) to protect heat exchangers from particulate fouling.
Food and beverage rinse water — 3M 1 micron solid cartridge (RT10Y16G20NN) for fine filtration to meet quality standards.
Chemical processing feed water — 3M 27 micron solid cartridge (RT30L16G20NN) for high-flow sediment reduction upstream of sensitive equipment.
Wastewater effluent polishing — 3M 2 micron string-wound cartridge (RT09Y16G20NN) for final particulate removal before discharge or reuse.
Pharmaceutical utility water — 3M 0 micron string-wound cartridge (RT09L16G20NN) for sub-micron filtration in critical systems.

3M Products

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

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