Go and No-Go Ring Gages
Go and No-Go Ring Gages are manufactured with hardened tool steel for exceptional durability and feature a fully knurled circumference for maximum gripping ability and safety. No-Go gages are clearly marked with a red ring. UNC and UNF gages have a 2A tolerance. UNC gages are available in 19 sizes from #2-56 to 2-4 ½ and UNF gages are available in 19 sizes from #0-80 to 1 ½ -12. Metric and metric fine gages have a 6g tolerance. Metric gages are available in 19 sizes from M2x.4 to M68x6 and metric fine gages are available in 19 sizes from M8x1 to M48x1.