TM 10-6640-215-13 SECTION II.  EXPENADABLE/DURABLE ITEMS LIST - continued 137 C 6640-00-440-7000 STOPCOCK, LABORATORY EA APPARATUS: Glass, straight, 2 mm (96906) MS35989-2 DD-S-720, Type I, Grade A (with plugs) 138 C 6640-00-852-3452 STOPCOCK, LABORATORY EA APPARATUS: Glass, straight, 4 mm, std taper MS35989-3 DD-S-720 Type 1, composition I, Grade A (with plugs) 139 C 6640-00-410-1917 STOPCOCK, PLASTIC: Tapered EA ends, 3/8 to 1/4 in. (15747) P/N G23025A 140 C 6640-00-116-2823 STOPPER, BOTTLE: Cork, EA w/std taper, regular, No.  4 stopper, 0.63 in.  top dia, 0.47 in.  bottom dia (80740) No.  26-970-4 141 C 6640-00-232-5991 STOPPER, BOTTLE: cork, EA w/std taper, regular, No.  5 stopper, 0.69 in.  top dia., 0.53 in.  bottom dia 100s (80740) No.  26-970-5 142 C 6640-00-232-6014 STOPPER, BOTTLE: Cork, EA w/std taper, regular, No.  6 stopper, 0.75 in.  top dia, 0.58 bottom dia, 100s (80740) No.  26-970-6 E-17 (1) Item Number (2) Level (4) Description (5 U/M (3) National Stock Number