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Tiny 0.40 mm Twister Micro-Tuff drill bit, silver metal finish

M.A. Ford

M.A. Ford 305M0040AM Twister Micro-Tuff Drill 0.40 mm pneumatic accessory

SKU CH-VMJ4-T5AS2

A 0.40 mm Twister Micro-Tuff drill bit for precision pneumatic drilling applications

  • Micro-Tuff coating extends tool life in abrasive materials
  • 40 mm diameter enables precise micro-hole drilling
  • Twister flute geometry improves chip evacuation at high speed
  • California Proposition 65 warning discloses regulated chemical content
  • M.A. Ford brand backs professional-grade pneumatic accessory quality

Precision Micro Drilling

The M.A. Ford 305M0040AM Twister Micro-Tuff Drill is a 0.40 mm pneumatic accessory built for high-precision hole making. It targets machinists and technicians who need reliable performance in tight-tolerance applications. The solid carbide construction supports accurate results in demanding materials.

Suitability For Fine Hole Work

This drill suits operators producing micro-diameter holes in metals or composites where standard twist drills cannot reach. It is not for buyers who need larger diameters, coolant-through capability, or indexable insert tooling. The specialised geometry limits use to very small hole requirements.

Critical Diameter Specification

The 0.40 mm cutting diameter is the single figure that determines if this tool fits the job. A hole specification even slightly above or below this size makes the drill unsuitable. Verify the exact target diameter before ordering this specific accessory.

How it compares

Measured against everything we stock in Bits, Hole Saws & Accessory Kits, at today’s prices. Recalculated every night.

Price $22.99
Cheaper than about 58% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameM.A. FORD

Questions about this item

How small a hole can the 0.40 mm Twister Micro-Tuff Drill produce before the bit reaches its limit under sustained use?

The 0.40 mm diameter is the smallest cutting size this drill offers; pushing it further would exceed the tool's design envelope.

What heat or vibration level should I expect when running the Twister Micro-Tuff Drill continuously in a pneumatic tool?

The micro-diameter geometry reduces cutting forces, so heat build-up and vibration stay low even during extended drilling cycles.

Which pneumatic tool holder or collet do I need to fit the 0.40 mm shank of this Twister Micro-Tuff Drill?

A precision collet or chuck that accepts a 0.40 mm shank is required; standard 1/4 in or 3 mm holders will not grip it securely.

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