No other part numbers with same form, fit, and function found.
All except usa an item with a full length trough for holding tube, capillary, blood sample. the trough, when filled with a suitable material, plugs and holds the tubes.
NSN 5950-00-487-8489
NSN 5999-00-177-3383
NSN 6110-00-170-6520
NSN 5985-00-246-3875
NSN 5920-01-633-8495
NSN 6110-00-088-8269
NSN 5930-01-060-3060
NSN 5998-01-469-8401
NSN 6610-00-823-9159
NSN 5960-00-926-2637
NSN 5905-01-491-0231
NSN 5835-01-293-4122