ISO 1234:1997

Overview

ISO 1234:1997 is an internationally recognized standard published by the International Organization for Standardization (ISO) that specifies the characteristics, dimensions, and requirements for split pins. This second edition replaces the first edition from 1976, reflecting technical revisions to ensure up-to-date specifications for manufacturing and usage.

Split pins, also known as cotter pins, are essential fasteners widely used in mechanical engineering and construction industries. They serve as locking devices that secure nuts or other fasteners by passing through a hole in a bolt or shaft and then bending the pin legs to prevent loosening.