4410-00-376-7564 (S5101H3122448PCMARK1)
4410-00-376-7564 is equivalent to manufacture part number 37-100A. It is a economiz tube sheet 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.