5/16"/8mm Tubing and Nuts

Cunifer is seamless, copper nickel alloy DOT approved brake line used for OEM and replacement brake lines, fuel lines, power steering and cooling lines.
Corrosion proof and easy to install high pressure hydraulic tubing for the harshest environments.

All of our tubing conforms to hydraulic brake tubing specifications SAE J1650, DIN 74234 and BS 2871.

Save money when you buy tubing packages!

All nuts are steel except where followed by ss (stainless steel) or br (brass)

Nuts will vary in color.

The part number indicates the tube size.
-3 is 3/16", -4 is 1/4", -5 is 5/16", -6 is 3/8" , -8 is 1/2"


Save money when you buy nut packs!



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