RS PRO Cable Gland Adaptor, M20 Exterior Thread, M16 Interior Thread, Nylon 66

This component is suitable for use in harsh industrial settings as it's made from chemical and heat-resistant nylon 66. It also meets the UL 94V-2 standard for flammability in plastics, so it's self-extinguishing within 30 seconds.

The gland adaptor prevents damage from moisture and dust by protecting the ends of electrical cables where they're connected to machines and other equipment. It's often used to reduce the thread size of cable ends on industrial control panels and instrumentation.