Material certificate

Shell and contact alloys, traceable to the batch

Plating certificate

Thickness in microns, because that is the wear life

Rating test report

Current, voltage and temperature rise, and the arrangement tested

Crimp specification

Tool, setting and the pull-out table for each wire size

Crimp height record

Measured during production, because the joint cannot be inspected later

Mating cycle data

How many cycles the plating survived, and how it was measured

Revision statement

Which revision the batch was made to, and what it mates with

Sealing test

Ingress rating, and whether it was tested mated or unmated

An illustrative list for a fictional range. A real programme agrees which documents are required, in what form, and how long they are retained.

The one that is most often missing.

The crimp height record. It is the only production evidence that the joints were made to the specification, and it cannot be reconstructed from the finished harness.

Why the sealing test has to say mated or unmated.

Because the rating only applies when the connector is correctly coupled. A connector tested unmated and quoted as sealed describes a condition the joint is never in.