The 71X-0053-33 is a circular 1.0 / 2.3 nut which is 1.8mm thick and made from Brass with nickel plating.
C-SX-117G
C-SX-113GN
C-SX-133N
C-SX-130N
C-SX-098G
C-SX-099G
C-SX-135
C-SX-171G
C-SX-187GN
C-SX-219GZZ
C-SX-113GNRZR2
C-SX-098GRZR2