A system allows the remote entry of pin data to manufacture a customized lock cylinder assembly. A remote computer communicates with a cylinder manufacturing system (or website) to upload user-selected pin data. The pin data may be stored for future reorders or additional orders. A pinning machine receives the pin data and automatically selects pins to manufacture a customized lock cylinder assembly. The lock cylinder assembly may be completed in seconds and shipped to the user thereby eliminating the need for manual lock customization. In addition, key code data may be provided to a key manufacturing system to automatically manufacture keys corresponding to the customized lock cylinder assembly.