Keyslot Cutters | McMaster-Carr

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	Number of Flutes Number of Flutes

	2		4

	Length of Cut Length of Cut

	Overall Depth Overall Depth

	Shims Required Shims Required

Yes

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293 Products

End Mills and Milling Cutters

High-Speed Steel Straight-Tooth Keyseat End Mills

Use these end mills for general purpose keyseat cutting in a wide range of material, including aluminum, iron, and steel. They mill precise notches in rotary shafts to fit machine keys and can also be used for slot milling.

Carbide Straight-Tooth Keyseat End Mills

Made of solid carbide, these cutters are harder, stronger, and more wear resistant than high-speed steel and cobalt steel for the longest life and best finish on hard material. They mill precise notches in rotary shafts to fit machine keys and can also be used for slot milling.

Cobalt Steel Straight-Tooth Keyseat End Mills

With better heat and wear resistance than high-speed steel, these cobalt steel keyseat cutters can run at higher speeds and provide better performance on hard material. They mill precise notches in rotary shafts to fit machine keys and can also be used for slot milling.

High-Speed Steel Staggered-Tooth Keyseat End Mills

Use these end mills for general purpose keyseat cutting in a wide range of material, including aluminum, iron, and steel. An alternating right- and left-hand tooth style allows them to remove more material at high speeds than straight-tooth keyseat cutters.

Oversize-Tolerance Carbide Square End Mills

Also known as NC tolerance end mills, these carbide end mills have oversize mill diameter tolerances. They're sized to match standard high-speed steel end mills, so you can use them as longer-lasting replacements without changing the size of the cut.

Undersize-Tolerance High-Speed
Steel Square End Mills

Commonly used to make keyways in rotary shafts, these tools have a -0.0015" to 0.0000" mill diameter tolerance for creating a precise fit.

Broaching

Bushings for Keyway Broaches

Use individual keyway broaches in a variety of arbor hole sizes. Bushings rest inside the arbor hole of your workpiece and act as guides to ensure rigid and accurate keyway cutting.