Description:
DIN 9861 restricts the range of stepped punches with conical head to shanks of 3 mm max. diameter and points of 2,95 mm max. diameter.
Stepped punches of larger size are, however, quite popular owing to their rigidity and ability to sustain considerable stripping forces. In accommodation of this demand we supply larger sizes whichare ground from stock sizes of the 222.-series.
Please select from those ranges and complete your order in accordance with the example on the right.

Material:
HSS
Order No 274.3.
Hardness:
Shaft 64 ± 2 HRC
Head 52 ± 3 HRC

HST
Order No 274.4.
Hardness:
Surface ≥ 950 HV 0,3
Head 52 ± 3 HRC

HZ - TIN (HSS)
Order No 274.0.
Hardness:
Surface 2300 HV 0,05
Head 52 ± 3 HRC

↗  Description of FIBRO materials for tool and die components see at the beginning of Chapter E.

Execution:
Shaft precision ground. Head subsequently hot upset-forged and tempered; residual upset-buge below head normally much smaller than permissible acc. to DIN 9861.
Stock lenghts: 71, 80, 100 mm.
other lengths and diameters on request!