Numerical Control System Numerical control system description. Attributes Part #/SKU: FCA 515LWY Manufacturer: Mitsubishi Serial #: M511734 03 6Z Condition: New Parts Inquiry If you would like more information about this part, or have specific questions, please use the form below. An MTT specialist will be in touch with you very soon. Your Name* First Last Daytime Phone*Email Address* QuestionsIf you have questions about this part. This iframe contains the logic required to handle Ajax powered Gravity Forms.