2040-01-500-3441 (6917-001 3876917001)
2040-01-500-3441 is equivalent to manufacture part number 387. It is a support collar and is classified under Federal Supply Class 2040 (2040 - Marine Hardware and Hull Items), stocked for defense, aerospace, MRO, and industrial maintenance applications. This item is cataloged in the NATO supply system under 2040 - Marine Hardware and Hull Items and is available through NSN-PARTS for U.S. government MRO, and commercial procurement.