Punches HSS 2.5 x 71mm Countersunk Head DIN9861/D
With heads hot-forged and annealed to DIN 9861D.
Material = high alloyed high speed steel (HSS).
Shaft and head precision-ground.
Hardness shaft 62 - 64 HRC.
Hardness head 45 ± 5 HRC.
Dimensions in millimetres (mm).
dia x Length : 2.5 x 70mm |
d2 : 3.5mm |