9623021 - Standard machine tap HSS-E5 (cobalt 5%) -UNC UNF -DIN 374/376 -B Shape (GUN) -2B -Dulofix shank
962AT51 - Flashcut machine tap HSSE-PM -TiN coated -UNC UNF -DIN 371/376 -C Shape -2B -Interrupted thread -Rear conicity