This specification covers construction, material and finish requirements, design requirements and guidelines, part marking requirements, tolerances and KCC, workmanship standards, and quality control and source approval for the types of tubing covered by this specification.

Note 1: The use of zinc plated tubing in long life coolant systems is not recommended. Engineering must approve the optional use of zinc-plated tubing.

Note 2: Larger diameter steel tubing (1-5/8 to 7 inches) used in engine air/fluid systems is covered in TMS-1058. Aluminum tubing used in engine air/fluid systems is covered in TMS-1059.

Restricted Chemical Substances

Effective January 1, 2007, all product supplied to the requirements of this specification must comply with the requirements of the CEMS B-50 specification.