Step drill 7.8 / 4.3 HSS for M4 screw with cylindrical shank PN 221254, StimZet
Variant:
4,3 x 7,8 mm |
On request
|
33,65 € with VAT |
5,3 x 9,5 mm |
On request
|
40,76 € with VAT |
6,4 x 11,4 mm |
On request
|
46,37 € with VAT |
8,4 x 15,4 mm |
On request
|
72,00 € with VAT |
Current price:
33,65 €
with VAT
27,81 € without VAT
On request
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- EAN:
- 1000000212662
- Brand:
- StimZet
- Warranty:
- 24 months
- Code:
- K540780V000S
Product information
Czech metal step drill bit 7,8x4,3 mm for screw M4
Step drill bit for shaft and recessed 90 ° head screw
Overall length: 117mm
Screw length total / Front Face: 75 / 11mm
Helix Angle: 25 ° to 30 °
Angle of Tip: 118 ° and 90 ° Form: A
Material: HSS
Standard: PN221254 < br>
Drill is cut to two diameters: 4,3mm and 7,8mm
Shank diameter: 7,8mm
Drilling requires lower cutting conditions than standard normatives for classical drills.
Usage:
Stepped drills with four facets are recommended for drilling screw holes and at the same time recesses for cylindrical screw heads in non-alloy and alloy steel and steel castings to a strength of 800 N / mm2, gray, tempered ductile cast iron, aluminum alloys, etc.
Cat. No.: K540780V000S
If you need a different size, see the enclosed photos - see the DIN8374 catalog sheet - for German screws.
Variants
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