Unified Coarse thread plug gauge UNC 1-64 2-56 3-48 4-40 5-40 6-32 8-32 10-24 12-24 Unified Fine Trhead gage UNF 1/4 5/16 3/8-24

Unified Coarse thread plug gauge UNC 1-64 2-56 3-48 4-40 5-40 6-32 8-32 10-24 12-24 Unified Fine Trhead gage UNF 1/4 5/16 3/8-24

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