How to Identify and Measure Fittings
Pipe size is an industry designation, not the actual size. View information about how to measure threaded and unthreaded pipe and pipe fittings.
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Metal Barbed Hose Fittings for Air and Water
Slide the barbed end into rubber hose and secure with the appropriate clamp or crimp-on hose ferrule.
Brass fittings are softer than other metal fittings, so they’re easier to thread together. Plain brass fittings have good corrosion resistance. Fittings with a threaded end are also known as hose nipples.
Metric, UN/UNF (SAE Straight), and BSPP male threads with gasket protect against leaks. UN/UNF (SAE Straight) threads are also known as O-ring boss threads.
For technical drawings and 3-D models, click on a part number.


UN/UNF (SAE Straight)
Male Threads with Gasket
- Maximum Pressure: 250 psi @ 72° F
- Maximum Vacuum: 27 in. of Hg @ 72° F
- Temperature Range: -40° to 160° F
- Attachment Type: Use Worm-Drive Clamps or Crimp-On Hose Ferrules
- Specifications Met: See table