Midland Industries 12403 Hex Head Reducing Nut, 1/4 x 5/16" Inverted Flared, Brass

Features:

•Typical Application: Hydraulic brake, power steering, fuel lines and transmission cooler lines, LP and natural gas.
•Working Pressure Ranges: Temperature and type of tubing used are important factors. However, the following table is a good guide for proper selection.

• Tolerance: +/- .03 on all dimensions.

• Approvals: Meets functional requirements of SAE J530, J531
•Vibration: Excellent resistance.
•Temperature Range: -650F to +2500F (-530C to +1210C) range at maximum operating pressures.
•Used With: Copper, brass, aluminum and steel hydraulic tubing that can be flared.
•Advantages: Very low cost and reusable. Seats and threads are internal and protected. Compact, excellent vibration life. Short nut affords very close tube bends. Steel or brass tube nut.

Assembly Instructions:
1-Cut tubing to desired length. Make sure all burrs are removed
and the ends are cut square.
2- Slide nut on tube. Threaded end “A” of nut must face out.
3- Flare end of tube with a 450 flaring tool.
a- Measure flare diameter.
b- Examine flare for excessive thin out.
c- On thin wall, welded or brazed tubing, use double flare to
prevent pinch-off and cracked flares.
4- Lubricate threads and assemble to fitting body. Nut should
be turned hand tight.
5- Tighten assembly with wrench until a solid feeling is encountered.
From that point, apply a one-sixth turn.
Note: Do not over-torque as it may damage the fitting or split
the tubing at the flare.