repeatable size control that delivers consistent hole diameters across production runs
optimized for rigidity and controlled engagement
DIN 8051 B taper shank with ISO H5 tolerance: Secure
Carbide (K10) construction for long life: Intermediate precision carbide provides stable size retention and wear resistance
wear-resistant construction: crafted from high-quality materials to withstand demanding machining environments and extend service life
JBO Thread Ring Gauge (GO) - UNC - Left Hand - 2A - 1 3/8 x 6 Face Mill Arbors repeatable size control that deliversThe JBO Thread Ring Gauge (GO) for UNC, Left Hand, 2A, 1 3 8 x 6 is a precision Go gauge designed to quickly verify external UNC threads. Built for quality control, machining shops, and assembly lines, it helps inspectors confirm parts meet exact standards with a simple pass fail check. Accurate UNC Left Hand Go Gauge: Quickly verify external thread diameters to ensure components conform to UNC standards, speeding up inspection and reducing rework.