58654-1 is a bottoming die designed for use with CERTI-CRIMP hand crimping tools to ensure consistent and repeatable crimp performance. The bottoming die design ensures proper crimp force is applied to terminals, resulting in specified tensile strength, mechanical stability, and electrical conductivity. TE Connectivity's CERTI-CRIMP tools featuring bottoming dies are furnished with documentation of critical crimp area dimensions and handle pressure settings. Regular maintenance and certification cycles are recommended at 8 months or 1,000 cycles, whichever comes first. These tools are commonly used in wire processing and terminal crimping applications where crimp quality and repeatability are essential.