21 mm Reamers | McMaster-Carr

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System of Measurement

Reamer Diameter

0.2500" to 0.2813"

0.2813" to 0.3125"

0.3125" to 0.3438"

0.3438" to 0.3750"

0.3750" to 0.4063"

0.4063" to 0.4375"

0.4219" to 0.4531"

0.4219" to 0.4688"

0.4375" to 0.4688"

0.4375" to 0.5000"

0.4688" to 0.5313"

0.5000" to 0.5625"

0.5313" to 0.5938"

0.5625" to 0.6250"

0.5938" to 0.6563"

0.6250" to 0.6875"

0.6563" to 0.7188"

0.6875" to 0.7500"

0.7188" to 0.7813"

0.7500" to 0.8125"

0.7813" to 0.8438"

0.8125" to 0.8750"

0.8438" to 0.9375"

0.8750" to 1.0000"

0.8750" to 1.1250"

0.9375" to 1.0625"

1.0000" to 1.1250"

1.0625" to 1.1875"

1.1250" to 1.2500"

1.1875" to 1.3438"

1.2500" to 1.4375"

1.3438" to 1.5313"

1.4375" to 1.6250"

1.5313" to 1.7813"

1.6250" to 1.8750"

1.7813" to 2.0938"

1.8750" to 2.1875"

2.0938" to 2.4688"

2.1875" to 2.5625"

2.5625" to 3.0000"

For Use On

Stainless Steel

Flute Type

Material

High-Speed Steel

Shank Type

Number of Flutes

Sold As

Overall Length

DFARS Specialty Metals

Export Control Classification Number (ECCN)

Length

REACH

RoHS

Reamer Type

Reamer Operation

Flute Length

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1 Product

Reamers

Finish holes to precise inch, metric, wire gauge, or letter sizes with these reamers.

Round Shank

Straight Flute

These reamers fit in the chuck of drill presses, turret lathes, and other machine and power tools, making them the most common shank type.

Straight Flute—The most common flute style, these reamers are suitable for a wide range of applications, but not recommended for holes with a keyway or other breaks in the surface.

High-Speed Steel—Durable and wear resistant, these are good for general purpose reaming in most materials.

			Lg., mm
	Reamer Dia.	Material	Flute	Overall	No. of Flutes	Cutting Dia. Tolerance, mm	For Use On		Each
Straight Flute







				Metric

				21.0000 mm	High-Speed Steel	63.5	241.3	8	0.0025 to 0.01	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	000000
				High-Speed Steel Round-Shank Reamer with Straight Flute, 21 mm Reamer Diameter Product Detail QuantityEachDelivers tomorrow 7-9 am Select a compatible file type: Parasolid Solidworks 2022 and Parasolid files now available Solidworks 2022, PDF, and DWG files now available Parasolid files now available

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