Figure  C–4. Filler  Assembly (1) (2) (3) (4) (5) (6) (7) (8) [ILLUSTRATION DESCRIPTION QTY (a) (b) NATIONAL INC FIG ITEM SMR STOCK PART IN NO NO CODE NUMBER FSCM NUMBER USABLE  ON  CODE U/M UNIT C–4 Group 03 Filler Assembly C-4 1 96906 MS27019 CPLR,  Elbow  With  Gaskets Ea 1 C-4 2 96906 MS90725-8 Bolt, Hex–Hal,  3/8–In. Ea 8 C-4 3 5310-00-087-7493 96906 MS27183-13 Washer,  Flat,  3/8–In. Ea 8 C-4 4 5305-00-225-3839 96906 MS90725–8 Screw, Hex–Hal,  1/4–In. Ea 20 C-4 5 5310-00-809-4058 96906 MS27183-10 Washer,  Flat,  1/4–In. Ea 20 C–4 6 74897 ST20F1970-03 Closure,   Plate Ea 1 C-4 7 5330-00-524-0718 96906 MS9021-383 O–Ring Ea 1 C-4 8 74897 ST20F1968-04 Suction  Stub Ea 1 C-4 9 5330–00–647-2072 81718 C2479M-4 Gasket  (Model  53029A-20  Only) Ea 2 C-4 9A 7V054 X3702E Gasket  (Model  53029B-20  Only) Ea 1 C-4 10 96906 MS27028-17 Dust Cap With Gasket and Ea 1 Chain C-4 11 96906 MS27023-17 Adaptor,   Flanged Ea 1 C-4 12 96906 MS27030-9 Gasket Ea 2 Change 1 C–8.1/(C–8.2 blank)