JBO Thread Ring Gauge (NoGo) - UNC - Right Hand - 3A - 7/8 x 9 Shrink Fit Holders repeatable bore dimensions ensure consistent

repeatable bore dimensions ensure consistent results

high-quality finishes without the need for additional adapters

The M2 HSS construction provides lasting edge retention for accurate reaming

ISO H5 finish: Delivers precise hole sizes and better interchangeability

helping reduce chatter and produce clean edges on soft metals

JBO Thread Ring Gauge (NoGo) - UNC - Right Hand - 3A - 7/8 x 9 Shrink Fit Holders repeatable bore dimensions ensure consistentThe JBO Thread Ring Gauge (NoGo) is a precision inspection tool designed to verify external UNC threads. It is ideal for manufacturers, machine shops, automotive and aerospace workplaces, and quality assurance teams that need fast, dependable thread validation. With its No Go design, you can quickly confirm whether a threaded component meets the Unified thread standard for reliable fitment. No Go detection enables effortless pass fail decisionshelping