NA-16 Notch Defect Test Bar
 

The NA-16 Notch Test Bar complies with the requirements of MIL-STD-271E and F (Ships), paragraph 4.3.1.2, and NAVSEA-TB-T9074-AS-GIB-010/271.

The procedure specifies an inspection with the ability to detect the smallest rejectable surface defects, artificial or natural, in a test specimen.