HellermannTyton 90° Elbow Conduit Fittings, Fixed External Thread, HG-90 Series - HellermannTyton 166-22202, The HellermannTyton 166-22202 HG16-90 is a 90° Elbow Conduit Fitting with a fixed M16 external thread from the HG-90 Series. The one piece elbow is fast fit and highly resistant to solvents and oils. The elbow has been manufactured from Polyamide 6.6 (PA66). HellermannTyton 166-22202 HG16-90-M16 Helaguard Conduit Screw Fitting