About Reamers
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High-Speed Steel Round-Shank Reamers
The shank diameter is slightly smaller than the reamer diameter.
Straight-flute reamers are for general purpose cutting.
Spiral-flute reamers create a smoother finish than straight flutes and work well in keyways and other applications with an interrupted cut. Reamers with a right-hand spiral pull chips upward as they cut, so they’re often used in blind holes.
For technical drawings and 3-D models, click on a part number.
Reamer | Lg. | |||||||
|---|---|---|---|---|---|---|---|---|
| Size | Dia. | Flute | Overall | Number of Flutes | Cutting Dia. Tolerance | For Use On | Each | |
Straight Flute | ||||||||
| 25/32" | 0.7813" | 2 1/2" | 9 1/2" | 8 | 0" to 0.0004" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 0000000 |
Reamer | Lg. | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Size | Dia. | Flute | Overall | Number of Flutes | Cut Direction | Cutting Dia. Tolerance | For Use On | Each | |
Right-Hand Spiral Flute | |||||||||
| 25/32" | 0.7813" | 2 1/2" | 9 1/2" | 8 | Right Hand | 0.0001" to 0.0004" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 000000 |
Cobalt Steel Round-Shank Reamers
Choose these cobalt steel reamers for good performance on hard-to-machine materials. The shank diameter is slightly smaller than the reamer diameter.
For technical drawings and 3-D models, click on a part number.
Reamer | Lg. | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Size | Dia. | Flute | Overall | Number of Flutes | Flute Style | Cutting Dia. Tolerance | For Use On | Each | |
Cobalt Steel | |||||||||
| 25/32" | 0.7813" | 2 1/2" | 9 1/2" | 8 | Straight | 0" to 0.0004" | Aluminum, Brass, Bronze, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel | 0000000 | 0000000 |
Expansion Round-Shank Reamers
When the reamer wears down, twist the set screw to expand the diameter, and then grind the reamer to its original size. These reamers are carbide-tipped tool steel for excellent abrasion and heat resistance when cutting hard and abrasive materials. The shank diameter is slightly smaller than the reamer diameter.
These reamers are not designed for producing holes larger than the listed diameter or for producing holes of various sizes. The adjustment screw should never be loosened.
For technical drawings and 3-D models, click on a part number.
Reamer | Lg. | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Size | Dia. | Flute | Overall | Number of Flutes | Flute Style | Recommended Expansion Limit | Cutting Dia. Tolerance | For Use On | Each | |
Carbide-Tipped Tool Steel | ||||||||||
| 25/32" | 0.7813" | 1 3/8" | 9 1/2" | 6 | Straight | 0.010" | 0" to 0.0003" | Aluminum, Brass, Bronze, Fiberglass, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel | 0000000 | 0000000 |
Round-Shank Reamers for Hole Alignment with Safety Collar
A collar on the shank prevents you from reaming past the cutting edge. These reamers are for use with hand-held electric and air tools. Also known as bridge reamers, car reamers, and aligning reamers, they ream, true, enlarge, align, and debur holes. All have tapered ends for easy entry into misaligned holes. They are not for reaming tapered holes.
For technical drawings and 3-D models, click on a part number.
Reamer Dia. | Lg. | Direction | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Reamer Size | (A) | (B) | Shank Dia. | Flute | Overall | Flute Style | Spiral | Cut | Cutting Dia. Tolerance | For Use On | Each | |
High-Speed Steel | ||||||||||||
| 1 1/16" | 1.0625" | 0.7813" | 1/2" | 5 1/8" | 7 1/4" | Spiral | Left Hand | Right Hand | 0" to 0.005" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 0000000 |
Round-Shank Reamers for Hole Alignment
For use with hand-held electric and air tools, these ream, true, enlarge, align, and debur holes. They’re also known as bridge reamers, car reamers, and aligning reamers. All have tapered ends for easy entry into misaligned holes. They are not for reaming tapered holes.
For technical drawings and 3-D models, click on a part number.
Reamer Dia. | Lg. | Direction | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Reamer Size | (A) | (B) | Shank Dia. | Flute | Overall | Number of Flats | Flute Style | Spiral | Cut | Cutting Dia. Tolerance | For Use On | Each | |
High-Speed Steel | |||||||||||||
| 25/32" | 0.7813" | 0.4063" | 1/2" | 4 1/2" | 6 7/8" | 3 | Spiral | Left Hand | Right Hand | 0" to 0.01" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 000000 |
Hex Nut-Shank Reamers for Hole Alignment with Safety Magnets
Magnets on the hex nut hold the reamer in place in your tool and prevent it from accidentally falling when not in the square-drive impact wrench socket. Also known as bridge reamers, car reamers, and aligning reamers, they ream, true, enlarge, align, and debur holes. All have tapered ends for easy entry into misaligned holes. Do not use for reaming tapered holes.
Reamers with spiral flutes are a good choice for materials that are difficult to ream, such as high-carbon steel and cast iron.
Reamer Dia. | Lg. | Direction | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Reamer Size | (A) | (B) | Hex Shank Size | Flute | Overall | Spiral | Cut | Cutting Dia. Tolerance | For Use On | Each | |
High-Speed Steel | |||||||||||
Spiral | |||||||||||
| 1 5/16" | 1.3125" | 0.7813" | 2" | 5" | 7 7/8" | Left Hand | Right Hand | 0" to 0.01" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 0000000 |