The 91571-1 is a bottoming die assembly component designed for TE Connectivity's CERTI-CRIMP hand tool systems used in wire terminal crimping applications. This component is critical to maintaining proper crimp force and ensuring repeatable crimp performance by controlling the compression and reduction of the cross-sectional area of both wire and terminal during the crimping process. The bottoming die works in conjunction with a ratchet system to help operators apply crimp force according to terminal designer specifications. Regular maintenance and certification of the tool, including verification of the bottoming die condition, is recommended on an 8-month cycle or every 1,000 cycles to ensure consistent crimp quality. The component is essential for achieving specified tensile strength, mechanical stability, and electrical conductivity in crimped connections used across various industrial and electronic assembly applications.