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Silver solid carbide twist drill bit 3.90 mm diameter

M.A. Ford

M.A. Ford Twister XD 5X Solid Carbide Drill 3.90 mm

SKU CH-KK3A-K8BTA

Solid carbide drill bit for high-performance drilling at 3.90 mm diameter

  • Solid carbide construction resists wear for longer tool life
  • 5X diameter drilling depth reaches deeper holes in one pass
  • 90 mm diameter suits precise metric hole requirements
  • Twister XD geometry improves chip evacuation during drilling
  • California Prop 65 warning discloses regulated chemical content

Application & User

The M.A. Ford Twister XD 5X is a solid carbide drill bit sized at 3.90 mm for precision holemaking. It targets machinists and maintenance technicians who need reliable performance in steel, stainless steel and high-temperature alloys. Buyers requiring larger diameters or indexable tooling should select a different product.

Sustained Load Behaviour

The solid carbide construction maintains rigidity and edge integrity during extended drilling cycles. The 5X diameter-to-length ratio supports deeper holes without excessive deflection. Heat resistance allows consistent material removal rates where high-speed steel tools would degrade.

Deciding Specification

The 3.90 mm cutting diameter is the single dimension that determines fit for the intended hole size. Verify this exact measurement against your drawing or tap chart before ordering. An incorrect diameter cannot be corrected after the hole is drilled.

How it compares

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

Price $65.99
Pricier than about 74% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameM.A. FORD

Questions about this item

Does the 3.90 mm carbide drill generate noticeable heat or vibration during extended drilling cycles?

The solid carbide construction resists heat build-up better than cobalt or HSS drills, so the bit stays cooler during long production runs.

What tool holder or collet is required to run the 3.90 mm Twister XD 5X drill?

A standard 3.90 mm drill chuck, ER collet or hydraulic holder with a matching bore will secure the straight shank.

Can the 3.90 mm Twister XD 5X be used in an older CNC mill with lower spindle speeds?

Yes, the geometry works across a wide speed range, so legacy machines can run it by adjusting feed to maintain chip load.

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