The 400-4301-4S is a size 4 locator designed for use with compatible crimping tools and die assemblies. This tool ensures the accurate and repeatable positioning of contacts within a connector housing prior to crimping, which is critical for creating reliable electrical terminations. As a TE Connectivity product, it is manufactured to meet key environmental standards, being compliant with both the EU RoHS and ELV directives. Its low-halogen composition makes it suitable for applications with strict material requirements.