M20 X 2.5 6G Go-Nogo Thread Ring Gage ~ Gages are “X” tolerance. ~ Class 6G is for mm. ~ These are most commonly used for general applications including bolts, nuts, screws and similar fasteners. ~ Sold by the set. Gages are “X” tolerance. Class 6G is for mm. Sold by the set. These are most commonly used for general applications including bolts, nuts, screws and similar fasteners.
