JBO Thread Ring Gauge (NoGo) - UNJF - Right Hand - 3A - No. 12 x 28 Power Milling Chucks 5 threads meets the required

5 threads meets the required standards

The stable straight shank supports reliable alignment in collets and chucks

is built for precise finishing after drilling

Performance advantage: Higher cutting speeds and feeds compared with HSS

Through coolant with left-hand spiral flute and right-hand cutting: Enables efficient cooling and chip evacuation

JBO Thread Ring Gauge (NoGo) - UNJF - Right Hand - 3A - No. 12 x 28 Power Milling Chucks 5 threads meets the requiredThe JBO Thread Ring Gauge (NoGo) is a precision tool for checking external threads to the UNJF Unified thread standard. Sized No. 12 x 28 with Right Hand orientation and 3A class, its designed for use in manufacturing, automotive, and aerospace inspection environments where accurate, repeatable measurements matter. This gauge is crafted from hardened steel for long service life and durability. Its NoGo profile provides an immediate visual and tactile