Not all connector systems have full pin numbering (also known as pin out) - this is generally only a feature on the High-Reliability Connector ranges. The following ranges have the pin numbering detailed in their relevant Component Specifications:
Links to these Specifications can also be found on the Specifications page, or on all relevant product pages (look in the Literature area).
All other products are not specifically numbered. On some of the Industry Standard Connectors is a triangular ident mark, that can be used as a Pin 1 location. Customers are free to specify their own numbering system on any of these ranges, or use other relevant standards.
Location of Component Specification on a Product page