is this for 4awg marine wire

yes but i don’t know about using in salt water but it works on my car

How wide is the M6 1/4" from edge to edge in mm? Thanks

1/4 inch = 6.35 MM . Just over 6MM I hope that is what you need .

Does this include glueless heatshrik?

It includes heat-shrink. Not sure if it's glueless. I just heated up and it shrunk to fit.

are they solid copper? or copper clad? or plated?

I believe they are solid copper. When scratched with a file I do not see any color difference and they are not magnetic.

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Sanuke 10pcs 4 Gauge 5/16" Wire Connectors, Battery Copper Lugs Terminals | Heavy Duty Battery Cable Ends for 4 AWG Wires, 10pcs 3:1 Dual Wall Adhesive Heat Shrink Tubes(UL), Electrical Crimp Lugs

Product ID: 352971594

Details

Color
Bare Copper
Connector Type
Ring
Contact Material
Copper
Insulation Material
Non-Insulated
Terminal
Ring Terminal

⚡600V max voltage rating

🔌4 AWG heavy-duty gauge

🔥Heat shrink tubing 3:1 dual wall

¥3080

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Description

⚡ Connect Like a Pro, Seal Like a Boss!

EFFORTLESS INSTALLATION - Flared openings and pre-cut shrink tubes speed up your workflow—perfect for pros and DIYers alike.
PRO GRADE 4 AWG COPPER LUGS - Engineered for maximum conductivity and durability with 100% annealed electrolytic copper.
HEAVY DUTY HIGH TEMP RATED - Built to withstand up to 257°F and 600 volts for reliable, long-lasting connections in demanding environments.
VERSATILE APPLICATION SPECTRUM - Ideal for marine, solar, automotive, and home electrical projects—join thousands upgrading their setups now.
SEAL PROTECT WITH DUAL WALL HEAT SHRINK - Color-coded 3:1 adhesive tubing ensures moisture-proof, corrosion-resistant, and professional-grade insulation.

Sanuke’s 10-piece 4 AWG 5/16" copper wire connectors kit includes heavy-duty ring terminals and color-coded 3:1 dual wall adhesive heat shrink tubing. Rated for 600V and 257°F, these UL-certified copper lugs deliver superior conductivity, corrosion resistance, and moisture protection—perfect for professional-grade electrical, marine, solar, and automotive applications.

Specifications

ASIN	B092ZM6XY3
Best Sellers Rank	#1,974 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #8 in Ring Terminals
Brand Name	Sanuke
Color	Bare Copper
Connector Gender	Female
Connector Type	Ring
Contact Material	Copper
Customer Reviews	4.8 4.8 out of 5 stars (6,532)
Gauge	4
Included Components	10pcs 4 gauge-5/16'' wire connectors , 10pcs of 3:1 heat shrink tubing
Insulation Material Type	Non-Insulated
Item Dimensions L x W x H	0.6"L x 0.6"W x 1.77"H
Item Highlight	Heavy Duty Battery Cable Ends for 4 AWG Wires, 10pcs 3:1 Dual Wall Adhesive Heat Shrink Tubes(UL), Electrical Crimp Lugs
Manufacturer	Sanuke
Material Type	Copper
Maximum Voltage	600 volts
Model	SAG4516-10PK
Number of Items	10
Part Number	SAG4516-10PK
Specification Met	UL
Stud Size	5/16
Temperature Rating	257 degree fahrenheit
Terminal	Ring Terminal
Unit Count	10 Count

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¥3080

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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Smooth transaction and product arrived in perfect condition.

3 weeks ago

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