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M.A. Ford

M.A. Ford Twister Micro-Tuff Drill 0.39 mm 305M0039

SKU CH-Y7GB-MGMEG

A 0.39 mm Twister Micro-Tuff drill bit for precision drilling applications

  • Micro-Tuff coating extends tool life in abrasive materials
  • 39 mm diameter drills precise micro-holes in tight spaces
  • Twister flute geometry clears chips efficiently during high-speed drilling
  • M.A. Ford manufacturing delivers consistent performance for professional use
  • California Proposition 65 compliance discloses chemical safety information

M.A. Ford Twister Micro-Tuff Drill 0.39 mm

The M.A. Ford Twister Micro-Tuff Drill 0.39 mm is a precision cutting tool designed for creating small-diameter holes. It suits engineers and machinists working on detailed component fabrication or prototype development where accuracy is critical.

Suited for micro-drilling tasks in metals

This drill suits users needing a 0.39 mm diameter tool for high-precision applications. It is not for buyers who require larger hole sizes, heavier material removal rates, or tools designed for hand-held drilling machines without rigid spindle control.

Performs consistently in controlled, rigid setups

Under sustained operation, the drill maintains dimensional stability when used with appropriate coolant and feed rates in a fixed machine spindle. It is not designed for intermittent high-load bursts or unstable machining conditions that accelerate wear on the cutting edges.

How it compares

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

Price $16.99
Cheaper than about 70% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameM.A. FORD

Questions about this item

What size drill chuck or collet is needed to hold the 0.39 mm shank on this Twister Micro-Tuff drill?

Use a precision collet or micro-chuck that accepts a 0.39 mm shank; standard 3 mm or 1/8 in collets are too large and will not grip this drill securely.

Will this 0.39 mm drill fit in the same tool holder as my standard 3 mm or 1/8 inch micro-drills?

No, the shank diameter is 0.39 mm, which is far smaller than 3 mm or 1/8 in holders; you need a dedicated 0.39 mm collet or adjustable pin vise.

How can I verify the drill is cutting correctly after installation?

Under magnification, the drill should produce a clean, round hole at the 0.39 mm diameter with minimal burr and no wandering at the entry point.

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