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48 mm nominal diameter for precise applications
and ensure consistent results across parts and suppliers
DIN ER32 compatibility: Drops straight into standard ER32 tool holders with no special adapters
Built to DIN 212-B specifications with ISO H5 tolerance
JBO Thread Ring Gauge (GO) - UNC - Left Hand - 2A - 5/16 x 18 FHH 48 mm nominal diameter forThe JBO Thread Ring Gauge (GO) UNC Left Hand 2A 5 16 x 18 is a precision inspection tool designed to verify external threads against the Unified UNC specification. Its ideal for engineers, machinists, quality inspectors, and maintenance teams who need a fast, reliable way to confirm that threaded components will fit and perform as intended. Constructed from hardened steel, this GO gauge is built for durability and wear resistance in busy shop
