1 1/4 - 18

HANSON WHITNEY

1 1/4 18 NS 3 THREAD RING GAGES 1.25 GO NO GO P.D.'S = 1.2139 & 1.2102 1.250 - DW12317RD

G.A. CO.

1 1/4 18 NEF 2 THREAD RING GAGES 1.25 GO NO GO P.D.'S = 1.2139 & 1.2086 UNEF-2 - DW11879AC1

1 1/4 18 NEF 3 THREAD RING GAGES 1.25 GO NO GO P.D.'S = 1.2139 & 1.2102 UNEF-3 - 114183R1