ASME B18.8.4M

Description / Abstract: This Standard is intended to cover the complete dimensions and mechanical and performance requirements for Metric series slotted spring pins recognized as American National Standard, which are widely used in general industrial applications. Slotted spring pins have straight cylindrical sides with both ends chamfered and are formed with a single wall and a slot to accommodate radial compression. Also included is an Appendix providing supplementary information for the testing of pins in double shear.

This Standard defines 1.5-12 mm nominal diameter pins. The 1.5-3 mm diameter pins are defined as Type A, which may interlock in the free state and use the standard ISO installation hole requirements, and Type B, which do not interlock in the free state but require a restricted installation hole tolerance.

Slotted spring pins purchased for government use shall conform to this Standard and additionally to the requirements of Appendix B. For nongovernment applications the user is not restricted to the options provided by the Government Part Numbering System in Appendix B.