5/16-18 Serrated Flange Hex Lock Nuts Case Hardened HR15N 78/90 Black Zinc and Bake D6923RA2 Its M20 thread diameter and

Its M20 thread diameter and 60 mm length make it suitable for a wide range of projects

Crafted from high-grade steel

Its strength and durability make it a reliable choice for demanding projects

making it easy to tighten and loosen with a wrench or socket

5/16-18 Serrated Flange Hex Lock Nuts Case Hardened HR15N 78/90 Black Zinc and Bake D6923RA2 Its M20 thread diameter andThese 5 16 18 Serrated Flange Hex Lock Nuts are made of case hardened HR15N steel and are finished in black zinc and bake. They have a serrated flange that helps to prevent loosening and are ideal for use in applications where vibration is a concern. These nuts meet the requirements of ASTM A563 Grade C and are RoHS compliant.