Tap for machines G DIN 5156 HSS-Co 5 rectified type B

With overflow stem, for through threads.First cut: Form B of 4 - 5 initial mondar cutting processes.Thread DIN ISO 228 “G” (cylindrical tube thread) DIN 2299 “Rp” (Whitworth tube thread) Flank rectified and undercuts.
Polished surface.
Cut to the right.