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Ideal for finishing pre-drilled holes or achieving a final bore size in manufacturing
Neck Type: Long neck design offers extended reach for deep grooves and complex mold/die geometries
secure seating in standard collets or chucks for reliable accuracy
DIN 8051 B tolerance (ISO H5): Guarantees tight hole size control for repeatable assemblies and high-precision finishes
straight-shank design supports stable mounting in standard toolholders
JBO Thread Ring Gauge (NoGo) - UNJF - Left Hand - 2A - 1/2 x 20 Widin New Ideal for finishing pre-drilled holesThe JBO Thread Ring Gauge (NoGo) for UNJF threads is a precision tool designed to verify external thread diameters on fasteners, fittings, and machined components. It helps engineers, inspectors, and shop floor teams quickly determine whether a part conforms to required thread size and tolerance, supporting consistent quality across assemblies. Engineered for durability and reliability, this gauge uses hardened steel to resist wear in demanding
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