Compression Fittings

  • Typical Application

  • Instrumentation, hydraulic and pneumatic systems.
  • Pressure

  • Working pressure up to 2000 PSI with a 4:1 safety factor depending on tube size. When using plastic tubing, use the working pressure for type used.
  • Vibration

  • Fair resistance - use long nut when greater vibration resistance is needed.
  • Temperature Range

  • -65°F to +250°F (-53°C to +121°C).
  • Material

  • CA360 Brass for Barstock fittings.
    CA377 Brass for forged fittings.
  • Used With

  • Aluminum, copper, brass and plastic tubing. Plastic tubing requires insert. Not recommended for steel tubing.
  • Tolerance

  • +/- .02 on all dimensions. Dimension Data can change without notice. Please contact us when dimensions are critical.
  • Conformance

  • Meets specifications and standards of ASA, ASME and SAE.
Assembly Instructions
  1. Cut tubing to desired length.
  2. Slide nut and then sleeve on tube. Threaded end of nut must face toward fitting.
  3. Insert tubing into fitting body. Be sure tubing is bottomed on fitting shoulder.
  4. Lubricate threads and assemble nut to fitting body.
  5. Tighten nut hand tight. From that point, tighten with a wrench the number of turns indicated in the chart below.

    Tube Size
    Additional Turns
    From Hand Tight
    1/8" thru 1/4"
    1-1/4
    5/16"
    1-3/4
    3/8" thru 1"
    2-1/4
  • "L" at the end of a Part# means Light Pattern

  • Means that these fittings are completely interchangeable with full pattern fittings, but have been modified in some way. This modification is usually in the length of the pipe threads. Used in plumbing and light industrial applications.