Extension Tap: 1/4-20, H7, Bright/Uncoated, High Speed Steel, Thread Forming MPN:12727-010

The class ZZ minus plug & pin gage is precisely manufactured from carbon steel to achieve tight tolerance for a snug fit; it has an outside diameter of 3.23 mm while its nominal size is slightly smaller than ISO/B & C standard size for added precision. This plug gage comes complete with two grade N (meduim bronze) retractable pins that slide effortlessly when the plugs are properly inserted into the hole; a pin and bushing gauge chart is included to ensure proper use and application in measurement, inspection or production set-ups for your machining equipment. Moreover, class ZZ minus plug & pin gage is widely used by machinists across various industries such as automotive, aerospace, medical device manufacturers among others for high precision machining activities requiring consistent and accurate gaging results without having to resort to costly custom made solutions; the durability of this tool ensures longevity for repetitive use.