UNIFIED THREAD RING GAUGES

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All our Unified thread ring gages and plug gages are manufactured compliance to standard: ASME B1.2-1983 ASME B1.3-2007
Material：Gcr15, The measuring surface hardness is 53-60HRC, and the hardness of ≤NO#4 is 53-60HRC.
All gages are brand new;
The standard recommends common fits 2A/2B; if no special note, ring gage 2A, plug gage 2B will be choose. Internal thread tolerance class: 1B、2B、3B;External thread tolerance class: 1A、2A、3A;3A 3B will be used when closer tolerance required.

Size from No.0-80UNF to 1/2-13UNC

1 8 UNC 2A Ring

Size from 1/2-20UNF to 1 1/4-18UNEF

1 8 UNC 2A Ring

Size from 1 5/16-18UNEF to 2-20UN

1 12 6 UNC 2A Ring

Size from 2 1/8-12UN to 3 1/2-4UNC

1 12 6 UNC 2A Ring

Size from 3 1/2-12 UN to 5-16 UN

2 34 4 UNC 2A Ring

Size from 5 1/8-12UN to 6-16UN

2 34 4 UNC 2A Ring

For more information click the links below:

UNIFIED THREAD PLUG GAUGES

ANSI and International Thread Series Designations

ACME THREAD PLUG GAGES

ACME THREAD RING GAGES

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