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The JBO Thread Ring Gauge (NoGo) is a precision tool purpose-built to verify external thread diameters on fasteners and threaded components
making it a reliable choice for both production and prototyping work
IR/IL Insert Compatibility: Designed to work with internal right-hand (IR) and internal left-hand (IL) inserts for flexible threading directions without changing holders
Using the JBO NoGo Thread Ring Gauge improves workflow by speeding up inspection
combined with thoughtful geometry and coating
Dormer Pramet R520 7/16 Inch CARBIDE TiN CDX STRAIGHT SHANK STUB DRILL DIN 6539 Insert The JBO Thread Ring GaugeThe Dormer Pramet R520 is a 7 16 inch diameter carbide drill with a DIN 6539 straight shank, finished with a Titanium Nitride (TiN) coating. Designed for versatile use across steel, aluminum, and stainless steel, this high performance stub drill features a 130 degree point to help self center and reduce the push force required to start drilling. With a TiN coating for extended tool life, it stays sharper longer and maintains cutting performance at
