Class ZZ No-Go (Minus) pin gauges are solid rods made of tool steel with a black oxide finish that shows wear so users know when the gauge may need to be replaced. These gauges perform No-Go tolerance tests on boreholes with inch-sized threads and are used to calibrate equipment. They meet the specifications set by the National Institute of Standards and Technology (NIST).

Class ZZ No-Go (Minus) pin gauges are solid rods made of uncoated tool steel. These gauges perform No-Go tolerance tests on bores and holes of nominal inches. They meet the specifications set by the National Institute of Standards and Technology (NIST).

Class ZZ No-Go (Minus) pin gauges are solid rods made of uncoated tool steel. These gauges perform No-Go tolerance tests on bores and holes of nominal metric sizes. They meet the specifications set by the National Institute of Standards and Technology (NIST).