Links below contain tubing and the nuts and fittings for that size tubing

5/16"/8mm Fuel/Hydraulic Line and Nuts

Cunifer is a 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.

For Girling/Lockheed brakes on British/vintage/Euro cars the fittings you need are here: British/Girling brake line nuts

All nuts are steel except where followed by ss (stainless steel) or br (brass) Nuts will vary in color.

The number after the dash in the part number indicates the tube size to be used with that nut.

-3 is 3/16", -4 is 1/4", -5 is 5/16", -6 is 3/8" , -8 is 1/2"

For example the A3-5 nut, the "-5" indicates it would be used with CNF-5 (5/16") tubing.

The nut dash size must match the tube dash size.

Shops, Wholesale, Schools and Military Personnel - Call for pricing

Displaying products 1 - 11 of 11 results	Show:	Sort:

CNF-5 - 5/16"/8 mm OD tubing x 25 foot coil Price: $87.95 Quantity: 5/16"/8mm OD tubing x 25 foot coil	CNF-5A - 5/16"/8mm OD tubing x 12 foot coil Price: $48.98 Quantity: 5/16"/8mm OD tubing x 12 foot coil
CNF-5B - 5/16"/8mm OD tubing x 6 foot coil Price: $29.98 Quantity: 5/16"/8mm OD tubing x 6 foot coil	A3-5 - 1/2" x 20 unf male fully threaded steel nut - SAE flare Price: $2.00 Quantity: 1/2" x 20 unf male fully threaded steel nut, .600” longoverall SAE flare (45 degree/ inverted/double) Use with 5/16"/8mm brake line
AD5br - Screw 5/16"/8mm line into female port to adapt to 1/8" NPT port hole - brass Price: $4.00 Quantity: Adaptor 1/8" NPT male to 1/2" x 20 female SAE flare (45 degree/ inverted/double) This adaptor is brass	UA3-5br - 1/2" x 20 unf female union - brass - SAE flare Price: $4.50 Quantity: Union 1/2" x 20 unf female union SAE flare (45 degree inverted/double) This union is brass Use with 5/16"/8mm brake line
M9L-5 - 14mm x 1.5 male nut with non-threaded lead - DIN flare Price: $5.00 Quantity: 14mm x 1.5 male with non-threaded lead, 25mm long overall DIN flare (bubble/ISO) Use with 5/16"/8mm brake line	UM21-5 - 14mm x 1.5 steel union, female - DIN flare Price: $16.00 Quantity: Union 14mm x 1.5 steel union, female, 40mm long overall DIN flare (bubble/ISO) Use with 5/16"/8mm brake line
AN816-5 - 1/2" x 20 unf x 1/8" NPT Adaptor - 37 degree flare Price: $21.00 Quantity: 1/2" x 20 unf x 1/8" NPT Adaptor 1.14” long overall 37 degree flare Use with 5/16"/8mm brake line	AN 5/16 - 1/2" x 20 unf female steel nut and sleeve - 37 degree flare Price: $9.00 Quantity: 1/2" x 20 unf female steel nut (.685” long overall) and sleeve (.400" overall) 37 degree flare Use with 5/16"/8mm brake line
P12-5 - 1/2" x 20 unf male steel nut with non-threaded lead - SAE flare or DIN flare Price: $5.00 Quantity: 1/2" x 20 unf male steel nut with non-threaded lead, 1.06” long overall SAE flare (45 degree inverted/double) or DIN flare (bubble/ISO) Use with 5/16"/8mm tubing


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