JBO Thread Ring Gauge (GO) - UNEF - Left Hand - 2A - 3/8 x 32 Face Mill Arbors - Through Coolant The regular-length design adds versatility

The regular-length design adds versatility for a wide range of milling tasks

dependable bore completion in steel

while the left-hand spiral flute aids chip evacuation for smoother reaming

and enhances repeatability across production runs by pairing carbide wear resistance with specialized geometry tailored to Toolex specifications

it is designed for stable cutting

JBO Thread Ring Gauge (GO) - UNEF - Left Hand - 2A - 3/8 x 32 Face Mill Arbors - Through Coolant The regular-length design adds versatilityThe JBO Thread Ring Gauge (GO) for UNEF left hand threads is a precision go no go tool designed to verify external thread diameters to UNEF standards. It is ideal for technicians, inspectors, engineers, and tradespeople who regularly check 3 8 x 32 left hand threads in fasteners and components, helping ensure correct fit and reliable performance. This GO gauge is specified for 2A class and left hand thread geometry. Crafted from hardened steel with