M.A. Ford
M.A. Ford 305M0040 Twister Micro-Tuff Drill 0.40mm pneumatic accessory
A 0.40 mm Twister Micro-Tuff drill bit for precision pneumatic drilling
- Micro-Tuff geometry delivers precision drilling in hardened materials
- 40 mm diameter suits micro-hole applications in aerospace and medical work
- Twister flute design improves chip evacuation and reduces heat buildup
- M.A. Ford manufacturing ensures consistent performance across production runs
- California Proposition 65 compliance documented for regulated environments
0.40 mm Twister Micro-Tuff Drill
The M.A. Ford 305M0040 is a 0.40 mm pneumatic drill bit designed for precision hole-making in hard materials. It targets machinists and toolmakers who need consistent micro-diameter results in production or prototype work. The Twister Micro-Tuff geometry supports accurate chip evacuation at small scale. This accessory fits standard pneumatic tool holders used in high-speed spindle applications.
Upgrade from standard micro drills
Conventional micro drills often deflect or fracture when run at the speeds pneumatic spindles deliver. The Twister Micro-Tuff design replaces those general-purpose bits when hole tolerance and tool life become critical. The jump is worth it when scrap rates on 0.40 mm holes exceed acceptable limits. It also reduces the frequency of tool changes in lights-out machining cells.
Capacity and headroom in micro drilling
The 0.40 mm diameter handles fine-feature work in hardened steels, titanium alloys and composite stacks where coolant-through is not an option. It runs out when hole depth exceeds the flute length or when the workpiece material demands a coated carbide substrate not offered in this uncoated version. High feed rates beyond the flute capacity will also cause premature failure.
Highlights
- Micro-Tuff geometry delivers precision drilling in hardened materials
- 40 mm diameter suits micro-hole applications in aerospace and medical work
- Twister flute design improves chip evacuation and reduces heat buildup
- M.A. Ford manufacturing ensures consistent performance across production runs
- California Proposition 65 compliance documented for regulated environments
Specifications
| Brand | M.A. FORD |
|---|
Questions about this item
What size collet or chuck is needed for the 0.40 mm shank?
The drill has a 0.40 mm diameter shank; use a collet or chuck that grips this exact size.
How do I install the drill in a pneumatic tool without breaking the micro shank?
Open the collet fully, insert the shank straight in, then tighten evenly — do not force or side-load the 0.40 mm section.
When should I replace the Twister Micro-Tuff drill?
Replace it when the cutting edges show wear, chipping, or when hole quality drops below tolerance.
Also in this aisle
People compared these
Same shelf, same checkout — eight coins and a 30-minute rate lock.
