Beswick Compression FittingBeswick’s corrosion-resistant stainless steel and brass compression fittings are leak free due to the internal ferrules and an o-ring face seal design. A new compression fitting option supports 4mm tubing and ¼-28 threads. M3, M4, 10-32, M5, ¼-20, and 5/16-24 thread sizes and 1/16”, 1/8”, ¼” OD tubing options are also available. New catalogs and samples available upon request at