JBO Thread Ring Gauge (GO) - UNF - Right Hand - 3A - 1 3/8 x 12 Face Mill Arbors - Through Coolant Type C1 — is a

Type C1 — is a precision tool-holding accessory designed for axial machining operations

and BS 328/4 compliance help ensure compatibility with common reaming setups

The JBO Thread Ring Gauge (NoGo) – Metric Fine – Right Hand – 6h – M12 x 1

Featuring a carbide-tipped cutting edge (K10) and a taper shank for secure toolholding

reliable checks of threaded holes to ensure proper mating with M27 x 2 components

JBO Thread Ring Gauge (GO) - UNF - Right Hand - 3A - 1 3/8 x 12 Face Mill Arbors - Through Coolant Type C1 — is aThe JBO Thread Ring Gauge (GO) UNF is a precision go gauge designed to verify external threads on righthand UNF components. Sized for 1 3 8" diameter with 12 threads per inch and 3A tolerance, its built for machinists, inspectors, and quality teams who need fast, reliable pass fail checks. Crafted from hardened steel with a knurled outer edge, this gauge is ready for everyday use in busy shops and field service environments. Go No Go verification for