# 211.274-4 Policy for assignment of Government-assigned serial numbers.

It is DoD policy that contractors apply Government-assigned serial numbers, such as tail numbers/hull numbers and equipment registration numbers, in human-readable format on major end items when required by law, regulation, or military operational necessity. The latest version of MIL-STD-130, Marking of U.S. Military Property, shall be used for the marking of human-readable information.