JBO Thread Ring Gauge (NoGo) - UNEF - Left Hand - 2A - 13/16 x 20 Face Mill Arbors - Anti-Vibration Rugged daily-use build: Designed for

Rugged daily-use build: Designed for busy workshops and job sites

Hardened steel construction: Extreme wear resistance and durability for long tool life in busy workshops and production environments

6H tolerance design: Specifically engineered for left-hand metric fine threads with 6H hole tolerance to ensure accurate

suitable for finishing through-holes and blind holes in a range of alloys

JBO Thread Ring Gauge (NoGo) - UNEF - Left Hand - 2A - 13/16 x 20 Face Mill Arbors - Anti-Vibration Rugged daily-use build: Designed forThe JBO Thread Ring Gauge (NoGo) is a precision inspection tool designed to verify external UNEF threads in a left hand configuration. Sized for 13 16 x 20, its ideal for manufacturing, automotive, aerospace, and quality teams that need fast, reliable verification of thread diameters. With its NoGo face, the gauge makes non conforming threads instantly recognizable, helping prevent improper fits and costly rework. Constructed from hardened steel, it