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Cobalt square end mill, 1/2 inch, two flutes, 4-1/8 inch length

Cleveland Golf

Cleveland Golf Cobalt Square End Mill 1/2 2FL 4-1/8

SKU CH-N5QF-33VWX

Cobalt square end mill with two flutes and 4-1/8 inch overall length for milling operations

  • Product typeHole, Drill, Bore & Wire Gauges
  • Cobalt construction resists heat and wear during heavy cutting
  • Double square-end design provides two usable cutting ends per tool
  • Two-flute geometry clears chips efficiently in slotting operations
  • 1/2 inch fractional diameter fits standard tool holders
  • 4-1/8 inch overall length reaches deep cavities without deflection

Cobalt Square End Mill 1/2" 2FL

This Cleveland Golf square end mill is a fractional-inch cutting tool designed for milling flat-bottomed slots, pockets and profiles in ferrous and non-ferrous metals. The two-flute geometry provides generous chip clearance for efficient evacuation in deep cuts. It suits machinists, maintenance technicians and small-shop fabricators who need a reliable general-purpose mill for manual or CNC milling machines.

Sustained-load behaviour

The cobalt substrate retains hardness at elevated temperatures generated during prolonged cutting passes, reducing edge wear compared with standard high-speed steel. Two flutes allow larger chip loads per tooth, which helps maintain stable engagement and prevents chip packing during extended slotting operations. Consistent feed rates and proper coolant use will maximise tool life under continuous production conditions.

Upgrade considerations

This mill replaces worn or broken high-speed steel square end mills of the same 1/2-inch diameter and 4-1/8-inch overall length when longer edge life in tougher alloys is required. The step up to cobalt is justified for shops regularly cutting stainless steel, high-temperature alloys or hardened steels where HSS dulls quickly. It does not address needs for higher flute counts, ball-nose profiles or carbide-grade wear resistance.

How it compares

Measured against everything we stock in Utility & Specialty Hand Tools, at today’s prices. Recalculated every night.

Price $27.99
Pricier than about 56% of the 2,474 comparable items (median $23.99).

Specifications

Product
Brand nameCleveland
Product typeHole, Drill, Bore & Wire Gauges

Questions about this item

How much heat does the 1/2-inch cobalt square end mill generate during continuous slotting in steel?

Cobalt steel retains hardness at higher temperatures than standard high-speed steel, so the tool runs cooler and resists thermal softening during long cuts.

What holder does the 1/2-inch shank require?

The straight 1/2-inch shank fits standard 1/2-inch collets, Weldon flats or side-lock holders — any holder that accepts a 1/2-inch round shank.

Will this 2-flute, 4-1/8-inch overall-length cutter clear fixtures on my older manual knee mill?

The 4-1/8-inch overall length and 1/2-inch diameter match common Bridgeport-style tooling envelopes, so it fits most legacy manual mills without interference.

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