Thread Check, Inc. offers a complete line of AGD ‐ American Gage Design truncated set plugs. Set plugs are manufactured per ANSI/ASME B1.2 and are manufactured to an X tolerance in 1A, 2A and 3A Go members and 2A and 3A No go members. Thread Set plugs are made to a class X tolerance on pitch diameter and class W tolerance on lead and angle. Unified Series set plug gages are available in UNC, UNF, UNEF, and specials. Set plug gages are used to calibrate adjustable style thread ring gages. Thread Check manufactures many types of special gages including pre‐plates, multiple starts, special leads, acme threads, buttress threads, square threads, extra length thread gages, and custom gages to print. All set plugs are traceable to N.I.S.T.
Thread Ring Gages - Unified Inch