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Silver twist drill bit with double margin flutes, 21/64 inch diameter

M.A. Ford

M.A. Ford Cyclone Xd 3X Solid Double Margin Drill 21/64

SKU CH-09F7-P96P2

21/64-inch solid double-margin drill delivers three-times diameter depth with improved hole accuracy

  • Cyclone Xd design improves drilling stability
  • 3X solid construction extends tool life
  • Double margin geometry enhances hole accuracy
  • 21/64 inch diameter suits precision tasks
  • California Proposition 65 chemical warning applies

Precision drilling tool

The M.A. Ford Cyclone Xd 3X is a solid double margin drill sized at 21/64. It is built for machinists who need accurate holemaking in steel, cast iron and other ferrous materials. The three-flute geometry supports stable cutting and consistent chip evacuation. This accessory fits standard industrial tool holders for CNC or manual operations.

Solid carbide construction

The one-piece carbide body resists deflection and holds tight tolerances through the cut. Double margins guide the drill evenly, reducing wander and improving finish quality on through-holes. The shank seats securely in collets and hydraulic holders without extra adapters. No coolant-through channel is present, so external flood or mist delivery is required.

California Proposition 65 notice

The product carries a Proposition 65 warning for chemicals linked to cancer and reproductive harm. Users should follow shop safety practices including ventilation, gloves and proper waste handling. No coatings, lubricants or software are bundled with the drill. The item ships directly from the manufacturer in its original packaging.

How it compares

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

Price $147.99
Pricier than about 90% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameM.A. FORD

Questions about this item

What shank standard does the 21/64 drill use and what diameter does it limit?

The 21/64 drill uses a straight shank that fits standard three-jaw chucks, limiting the maximum bit diameter to 21/64 inch.

What flute length and overall length does the 21/64 drill need for clearance?

The 3X solid double margin design gives a flute length roughly three times the diameter, so allow about 1 inch of flute clearance plus the shank length in the chuck.

How do you install the 21/64 drill in a drill press and what step is often missed?

Open the chuck, insert the shank fully, tighten all three jaws evenly, then verify the bit runs true before starting the spindle.

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