5.00mm Alpha Jobber Drill Metric Gold Blacks Fasteners

When you go to buy a drill bit, what are you needing? Just a drill? or do you actually want HOLES?

Rigorous independent testing has proven that the Gold Series Drills outperform other Australian drills on the market by more than 30% - giving you more holes for your dollar in every single drill bit!

The Alpha Carded Gold series Drills boast the highest quality M2 HSS jobber drill!

Features & Benefits

M2 HSS Fully ground M2 HSS material increases drill life
Titanium Nitride coating reduces heat and increases lubricity for extended life
135º Split Point cuts faster and reduces wandering

Specifications

Nominal Size	5.0mm
Shank Form	Cylindrical
Brand	Alpha
Total Length (mm)	86mm
Working Length (mm)	52mm
Drill Material	M2 HSS

Technical Information

DRILLING PRACTICE

The flute form, web thickness and split point of the standard Alpha drills are suitable for most materials forming fine chips. For effective drilling, the rigidity of the drill and work piece is most important. The shorter the flute length the more rigid the drill. Long drills must be adequately supported to reduce vibration.

The following are important in drill use :

Clamp the workpiece securely
Select the correct speed and feed
Use an appropriate coolant or lubricant
Ensure the shank is securely held. Avoid using worn drill chucks as the drill may slip during use.
Regrind the point or replace the drill before it dulls, do not force a worn drill.
When deep hole drilling, withdraw frequently to clear the chips ( deep holes start at 4X the diameter)
For stainless steel, manganese and high tensile steels, do not allow the drill to swell as it will cause work-hardening. Use a slower speed and heavier feed for these materials.