JBO Thread Ring Gauge (GO) - UNC - Left Hand - 2A - 1 x 8 M&D The multi‑flute configuration accelerates material

The multi‑flute configuration accelerates material removal while aiding chip evacuation to keep heat in check

Ergonomic knurled grip and standard metric sizing: Easy to handle

87 mm nominal diameter

The rugged construction minimizes downtime and maintenance

2 and a 6 mm diameter

JBO Thread Ring Gauge (GO) - UNC - Left Hand - 2A - 1 x 8 M&D The multi‑flute configuration accelerates materialThe JBO Thread Ring Gauge (GO) for UNC left hand threads is a precision inspection tool designed to verify external thread diameters with consistency. Ideal for machinists, quality technicians, engineers, and shop floor personnel working with UNC left hand 1 x 8 size, it provides fast, reliable go no go checks to ensure parts meet the specification. Specifically calibrated for UNC left hand 1 x 8 size: Provides a precise go no go reference for