Under what condition are common hardware items allowed in the composite tool kit (CTK)?

The condition that allows common hardware items in the composite tool kit (CTK) is when they are required as tools. This means that any item included in the CTK must serve a specific purpose related to the maintenance and servicing of equipment or vehicles. The CTK is designed to efficiently organize and store tools that are essential for aircrew flight equipment maintenance. Therefore, items that are not strictly tools, including those that may be surplus or simply requested by personnel, cannot be included. The focus on necessity ensures that the CTK remains functional and does not become cluttered with items that do not directly contribute to the tasks for which it was designed. This distinction helps maintain the integrity and usability of the CTK for aircrew personnel engaged in their operational duties.