BSI BS 949-4
BS BS 949-4 1990-JUN-29 Screwng Taps - Part 4 Metrc Ground Thread Taps Manufacturng Tolerances
Cart
(empty)
Manufacturing tolerances on the threaded portion of taps for producing ISO metric threads of tolerance classes 4H to 8H and 4G to 6G. Valid for short taps specified in ISO/R 529 as well as any other kind of ground thread taps with the same diameters and pitches.