Blocks up bridge trusses during jacking; used as a foundation for plain rollers during launch; galvanized
NSN 5835-01-495-0595
NSN 5935-00-106-3925
NSN 5996-00-043-1991
NSN 7035-01-435-7962
NSN 5895-00-349-8999
NSN 5915-01-536-7950
NSN 5965-00-594-3115
NSN 5950-01-440-8296
NSN 7035-01-467-9030
NSN 6145-01-571-6875
NSN 6240-01-552-0015
NSN 6650-01-144-4672