JBO Thread Ring Gauge (NoGo) - UNC - Right Hand - 3A - No. 1 x 64 FLH it delivers repeatable corners and

it delivers repeatable corners and clean radii across demanding jobs

rounded transitions in a single tool

reducing heat and built-up edge during cutting

and extended tool life—making it a trusted choice for workshop and production environments seeking quality holes with minimal deburring

delivering smooth finishes in through-coolant applications and reducing heat build-up

JBO Thread Ring Gauge (NoGo) - UNC - Right Hand - 3A - No. 1 x 64 FLH it delivers repeatable corners andThe JBO Thread Ring Gauge (NoGo) UNC Right Hand 3A No. 1 x 64 is a precision inspection tool for external threads. Sized to Unified Thread Standards, it helps engineers, inspectors, machinists, and fabricators quickly verify that fasteners and threaded components meet the correct diameter and fit. The NoGo design provides an immediate go no go indication for non conforming threads, supporting reliable quality checks on parts moving through