The 407189 Hex Jam Nut is a high-quality fastening solution from Dodge Industrial, specifically designed for 3/4-16 couplings and flex clutches. Made from durable materials, this nut ensures a secure fit and reliable performance in various mechanical applications. Its hexagonal shape allows for easy installation and removal, making it a practical choice for maintenance and assembly tasks. This jam nut is engineered to withstand high torque and pressure, ensuring stability in demanding environments. Ideal for use in industrial machinery and equipment, it meets industry standards for quality and reliability.