JBO Thread Ring Gauge (GO) - Metric Fine - Left Hand - 6g - M27 x 0.75 Shrink Fit Holders and a proven tolerance standard

and a proven tolerance standard helps you finish holes to spec quickly

repeatable bore finishes for metalworking tasks

a 1 mm corner radius (R1)

with a geometry that is similar to DIN 212 B

Its durable build and precise sizing give you confidence in every measurement

JBO Thread Ring Gauge (GO) - Metric Fine - Left Hand - 6g - M27 x 0.75 Shrink Fit Holders and a proven tolerance standardThe JBO Thread Ring Gauge (GO) is a precision inspection tool designed to verify external metric threads quickly and reliably. Specifically tailored for metric fine, left hand threads, it targets M27 x 0. 75 to help technicians confirm that components meet exact diameter and pitch requirements during assembly, machining, and quality control. Crafted from hardened steel for outstanding durability, this GO gauge resists wear in demanding workshop