Description

Size: 1/4 inch-20.4-sided shape.Screws onto a bolt, cap screw or threaded rod of the same thread size.Typically used in combination with a washer (not included).Not as commonly used as hex nuts.Thread Type: Coarse, Thread Class: UNC-2B.Specification(s) Met: ASME B18.2.2 and ASME 1.1

Amazon