4410-00-240-6019 (D-996-326-R-4-PC45/)
4410-00-240-6019 is equivalent to manufacture part number C-166-299PC3. It is a tube repair plug and is classified under Federal Supply Class 4410 (4410 - Industrial Boilers), stocked for defense, aerospace, MRO, and industrial maintenance applications. This item is cataloged in the NATO supply system under 4410 - Industrial Boilers and is available through NSN-PARTS for U.S. government MRO, and commercial procurement.