Our Flangeless PEEK Fittings are designed to include both a nut and ferrule for your convenience. Flangeless fittings are excellent replacements for flanged fittings. Flangeless fitting are dependable, easy to use and easy to replace. It has a 10-32 Flat-Bottom port configuration and is for 1/16″ OD tubing. Our Fitting System comes with a washer.