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Uncoated carbide drill mill, quarter inch, two flutes, ninety degree point

Micro 100

Micro 100 DM-250-290 Carbide End Mill 1/4 in 2FL CC Uncoated 90 Degree Drill Mill

SKU CH-49T5-9QEQD

A 1/4 in carbide drill mill with two flutes and a 90 degree point for drilling and milling

  • Product typeHole, Drill, Bore & Wire Gauges
  • 90-degree drill mill creates precise chamfers and holes
  • Two-flute carbide construction delivers clean cuts in tough materials
  • Uncoated surface suits general-purpose machining without coating buildup
  • 1/4-inch diameter fits standard collets and tool holders
  • Micro 100 quality ensures reliable performance in hand-tool applications

Micro 100 DM-250-290 Drill Mill

The Micro 100 DM-250-290 is a carbide drill mill with a 1/4 inch milling diameter and a 90 degree included angle. It features two flutes and an uncoated finish for general-purpose machining. This tool combines drilling and milling functions in a single cutter for efficient material removal.

Suited for machinists needing a combined drill

This uncoated carbide tool suits operators who need to drill, chamfer or mill with one cutter in softer materials. It is not for buyers who require a coated tool for extended life in abrasive alloys or high-speed production runs where specialised geometry is essential.

90 degree included angle defines the cutting profile

The 90 degree point angle determines the chamfer angle and the drill point geometry for this specific cutter. Buyers must verify that this angle matches the required chamfer specification or hole profile for their application before purchasing.

How it compares

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

Price $31.99
Pricier than about 61% of the 2,474 comparable items (median $23.99).

Specifications

Product
Brand nameMicro 100
Product typeHole, Drill, Bore & Wire Gauges

Questions about this item

How can I verify the 90-degree angle is cutting correctly after setup?

Run a test pass on scrap material and measure the chamfer with a protractor or gauge; a clean 90-degree edge with no chatter confirms the carbide drill mill is working as intended.

What comes in the box and what must I supply separately?

The package contains the uncoated carbide drill mill only; you will need to provide a compatible tool holder, work-holding fixtures and coolant or lubrication for the machining operation.

Which Micro 100 carbide drill mill should I choose for a 90-degree chamfer in 1/4-inch diameter?

Select the DM-250-290 model; its 1/4-inch milling diameter, two-flute uncoated carbide design and 90-degree included angle are specified for this chamfering task.

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