Description
Presto 31 ⁄₆₄″ HSS Machine Reamer – General-Purpose, Spiral Flute, MTS1 Shank
Overview
The Presto 31 ⁄₆₄″ (approximately 12.30 mm) HSS machine reamer, part of the trusted 72000 series, is a high-quality tool designed for finishing and sizing holes to precision tolerances. Built with durable HSS, left-hand spiral flutes, and a Morse taper shank, it’s engineered for use on machinery like drill presses, lathes, or milling machines. Its long flutes make it especially suited for cutting materials such as steel, aluminium, copper, and plastics up to 700 N/mm² tensile strength.
Features & Benefits
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Versatile Performance: Ideal for producing precise h7 tolerance holes in a wide range of materials—from mild steel to plastics.
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Efficient Chip Evacuation: The left-hand spiral geometry ensures chips are directed away from the cut, reducing the risk of clogging and improving finish quality.
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Stable Machine Fit: The MTS1 shank provides a secure, vibration-free mount—critical for high-accuracy machining.
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** Durable & Long-Lasting**: Made from tough HSS to deliver reliable performance over extended use.
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Trusted Quality: Presto’s long-standing reputation in cutting tools ensures consistency and precision in every insert.
Applications
This reamer is well suited for:
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Finishing pre-drilled holes to precise dimensions in mechanical and manufacturing tasks.
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Batch production or repair operations where consistent hole sizing is critical.
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Machined components requiring high accuracy, such as bushings, bearings, or assembly parts.
Summary
The Presto 31 ⁄₆₄″ HSS Machine Reamer provides dependable, precise hole finishing capabilities for professional machinists. With its spiral flute design, accurate tolerance, and solid HSS make-up, it’s an excellent choice for rigorous workshop environments.










