BA screw threads are a largely obsolete set of small screw threads, the largest being 0BA at 6 mm diameter. They were often used for miniature instruments and modelling. BA hand taps are typically used today for repairing threads or maintenance.
BA Hand taps are generally used for maintenance, in fabrication shops, hobbyists or for small batch one off jobs. All BA hand taps from Presto are available in sets or as individual taps (first/taper, second, plug/bottom hand taps). Hand taps are all straight fluted and can be used as machine taps if required. Order with Cutwel for next day delivery and the best service.
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