HSS Cobalt stub drills DIN 1897
5% cobalt-alloyed high-efficiency drills with re-inforced web. Specially suitable for drilling stainless steel, acid-resisting steel, spring steel. Best for hand held operations.
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Type of Shank
d1 Ø cutting edge
l1 total length / l2 slot length
d2 Ø shank
l5 drilling length for anchor
b width
d4 Ø mirror
Pitch
a width across flats
Ø Diameter of tap hole
Threading die height
Type of thread
d4-d1 diameter range
Packing Type
Packing Set Pieces Count
HSS Cobalt stub drills,
3-surface shank,
DIN 1897 PZ
Family: 904
HSS Cobalt stub drills,
3-surface shank,
DIN 1897 PZ
Family: 906
HSS Cobalt stub drills,
extra short,
DIN 1897 PZ
Family: 921