Product specification

Straight shank subland drill for drilling clearence holes, 90°, HSS, DIN 8374, 7,8x4,3 mm, M4-90°

Code: 011000502
Supplier code: K540780V000S
Category: Tools for hole-machining » 3 » Subland Drills » 221254
Basic price: 1069,20 CZK
more info
Ø D7,8 mm
L117 mm
l75 mm
Weight0,025 kg
Helix Angleλ = 25°÷30°
Point angleε = 118°/90°
MaterialHSS - high-speed steel
Manufacturing ModeV - ground from solid
Usage
Subland drills with four lands are recommended for drilling of clearing holes and simultaneously countersinking in parts made of unalloyed or alloyed steel, cast steel up to 800 N/mm2, grey-, malleable- or nodular cast iron, Al-alloys etc. It is necessary to choose the lower cuttting conditions for drilling than the guidelines for usual drilling declare.
Surface Treatmentwithout treatment
Grinding ModeN - conical lip relief
Ø d4,3 mm
l111 mm
ScrewM4
NotePROFI tools

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