–Working with all kind of different vehicles and custom setups, as we all know, can be quite a task. Here at Treadstone Performance we work hard to make your job just a little bit easier. We work hard to ensure if you buy one of our push-lock AN fittings it works with the proper hose size unlike many other fittings out there. We have fittings to fit all applications, whether it is AN, NPT, or metric you can rest assured that we have them here!

Here’s a little fact sheet you can reference off of:

  • Divide your AN size by 16 and this will give you the size in fractions of an inch
  • (AN size and hose sizes can be found by dividing AN size by 16 ex. 6AN = 3/8″ hose size)
  •  NPT means national pipe thread. These have tappered threads and are sealed by pressure of the thread getting tighter as it srews in, commonly sealed with teflon tape.
  • BSPT is a british pipe thread, also a tappered thread, but slightly smaller. Commonly found on the oil feed pressure sending units of engines.
  • NPT or BSPT sizes are not actual sizes of the thread, so dont try to measure them, they are a nominal size
  • AN size and hose sizes can be found by dividing AN size by 16 ex. 6AN = 3/8″ hose size

CHECK OUT OUR LIST OF AN AND NPT FITTINGS

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