1 1/8 - 12

S.G. CO.

1 1/8 12 UNF 3A THREAD RING GAGES 1.125 GO NO GO P.D.'S = 1.0709 & 1.0664 NF-3A - DW3658RD

1 1/8 12 UNF 3A SPECIAL THREAD RING GAGES 1.125 GO NO GO PD'S = 1.0659 & 1.0614