Secure your connections with the TECHSPAN LOCK-NUT NYLON 1Inch NPT. This durable nylon lock nut is designed for 1 NPT threads and features a black color for discreet installation. It offers excellent protection with an IP68 rating and is suitable for a wide operating temperature range.The TECHSPAN LOCK-NUT NYLON 1Inch NPT is a black nylon locking nut with a 1 NPT thread size. It has a wrenching flat width of 1.57 inches (40 mm) and a thickness of 0.27 inches (7 mm). This lock nut is constructed from Polyamide 6 and provides IP68 protection. It is rated for continuous operation between -30°C to 80°C and intermittent operation up to +150°C. The seal is made of Neoprene.