3/8-16 Serrated Flange Hex Lock Nuts Case Hardened HR15N 78/90 Black Zinc and Bake 1/4-20 The other end is unthreaded

The other end is unthreaded and has a slightly smaller diameter than the threaded end

Its grade 5 rating indicates a tensile strength of 120

and other industrial settings where a strong and reliable fastener is required

such as the motor and the controller

which means that the threads do not extend the full length of the screw

3/8-16 Serrated Flange Hex Lock Nuts Case Hardened HR15N 78/90 Black Zinc and Bake 1/4-20 The other end is unthreadedThese 3 8 16 Serrated Flange Hex Lock Nuts are made of case hardened HR15N steel and have a black zinc and bake finish. They are designed to provide a secure and vibration resistant connection in a variety of applications. The serrated flange helps to prevent the nut from loosening, even under extreme vibration. These nuts are also RoHS compliant and meet the requirements of ASTM A563 Grade C.