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System of Measurement System of Measurement |
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Reamer Diameter Reamer Diameter |
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For Use On For Use On |
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Flute Style Flute Style |
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| Straight | Helical Spiral |
Material Material |
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For Taper Pin Number For Taper Pin Number |
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Shank Type Shank Type |
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 | Round |
Overall Length Overall Length |
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Reamer Type Reamer Type |
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Number of Flutes Number of Flutes | Show |
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 | 3 |
Flute Length Flute Length |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement)  |
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Application Application |
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Rate of Taper Rate of Taper |
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Spiral Direction Spiral Direction |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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Cut Direction Cut Direction |
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About Reamers
More
Wire Gauge Size High-Speed Steel Round-Shank Reamers
With Straight Flutes
Wire gauge sizes 1 to 70 have a shank diameter that's slightly smaller than the reamer diameter. Wire gauge sizes 71 to 80 have a shank diameter that's equal to the reamer diameter.
Spiral-flute reamers have a right-hand spiral and a right-hand cut. They pull chips upward as they cut, so they’re often used in blind holes. Spiral flutes create a smoother finish than straight flutes and work well in keyways and other applications with an interrupted cut.
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 | |
High-Speed Steel | ||||||||
Straight Flute | ||||||||
| 75 ga | 0.0210" | 1/2" | 1" | 3 | 0" to 0.0002" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 00000000 | 000000 |
| 74 ga | 0.0225" | 1/2" | 1" | 3 | 0" to 0.0002" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 00000000 | 00000 |
| 73 ga | 0.0240" | 1/2" | 1 1/8" | 3 | 0" to 0.0002" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 00000000 | 00000 |
| 72 ga | 0.0250" | 1/2" | 1 1/8" | 3 | 0" to 0.0002" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 00000000 | 00000 |
| 71 ga | 0.0260" | 1/2" | 1 1/4" | 3 | 0" to 0.0002" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 00000000 | 00000 |
| 70 ga | 0.0280" | 1/2" | 1 1/4" | 3 | 0" to 0.0002" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 00000000 | 00000 |
Wire Gauge Cobalt Steel Round-Shank Reamers
Cobalt steel has good performance on hard-to-machine materials. Wire gauge sizes 1 to 60 have a shank diameter that's slightly smaller than the reamer diameter. Wire gauge sizes 61 to 80 have a shank diameter that's equal to the reamer diameter.
For technical drawings and 3-D models, click on a part number.
Reamer | Lg. | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Size | Diameter | Flute | Overall | Number of Flutes | Flute Style | Cutting Dia. Tolerance | For Use On | Each | |
Cobalt Steel | |||||||||
| 75 ga | 0.0210" | 1/2" | 1" | 3 | Straight | 0" to 0.0002" | Aluminum, Brass, Bronze, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel | 00000000 | 000000 |
| 74 ga | 0.0225" | 1/2" | 1" | 3 | Straight | 0" to 0.0002" | Aluminum, Brass, Bronze, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel | 00000000 | 00000 |
| 73 ga | 0.0240" | 1/2" | 1 1/8" | 3 | Straight | 0" to 0.0002" | Aluminum, Brass, Bronze, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel | 00000000 | 00000 |
| 72 ga | 0.0250" | 1/2" | 1 1/8" | 3 | Straight | 0" to 0.0002" | Aluminum, Brass, Bronze, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel | 00000000 | 00000 |
| 71 ga | 0.0260" | 1/2" | 1 1/4" | 3 | Straight | 0" to 0.0002" | Aluminum, Brass, Bronze, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel | 00000000 | 00000 |
| 70 ga | 0.0280" | 1/2" | 1 1/4" | 3 | Straight | 0" to 0.0002" | Aluminum, Brass, Bronze, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel | 00000000 | 00000 |
| 69 ga | 0.0292" | 1/2" | 1 3/8" | 3 | Straight | 0" to 0.0002" | Aluminum, Brass, Bronze, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel | 00000000 | 00000 |
| 68 ga | 0.0310" | 1/2" | 1 3/8" | 3 | Straight | 0" to 0.0002" | Aluminum, Brass, Bronze, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel | 00000000 | 00000 |
| 67 ga | 0.0320" | 1/2" | 1 3/8" | 3 | Straight | 0" to 0.0002" | Aluminum, Brass, Bronze, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel | 00000000 | 00000 |
| 66 ga | 0.0330" | 1/2" | 1 3/8" | 3 | Straight | 0" to 0.0002" | Aluminum, Brass, Bronze, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel | 00000000 | 00000 |
| 65 ga | 0.0350" | 1/2" | 1 1/2" | 3 | Straight | 0" to 0.0002" | Aluminum, Brass, Bronze, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel | 00000000 | 00000 |
| 64 ga | 0.0360" | 1/2" | 1 1/2" | 3 | Straight | 0" to 0.0002" | Aluminum, Brass, Bronze, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel | 00000000 | 00000 |
| 63 ga | 0.0370" | 1/2" | 1 1/2" | 3 | Straight | 0" to 0.0002" | Aluminum, Brass, Bronze, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel | 00000000 | 00000 |
| 62 ga | 0.0380" | 1/2" | 1 1/2" | 3 | Straight | 0" to 0.0002" | Aluminum, Brass, Bronze, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel | 00000000 | 00000 |
| 61 ga | 0.0390" | 1/2" | 1 1/2" | 3 | Straight | 0" to 0.0002" | Aluminum, Brass, Bronze, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel | 0000000 | 00000 |
Inch Size Round-Shank Reamers for Taper-Pin Holes
Use these reamers in drill presses, turret lathes, screw machines, and other machine tools to accurately ream existing holes for standard taper pins. The helical flutes have a left-hand spiral that pushes chips downward to reduce the risk of breakage and create a smooth finish.
For technical drawings and 3-D models, click on a part number.
Reamer Dia. | Lg. | Direction | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Taper Pin Number | (A) | (B) | Flute | Overall | Number of Flutes | Flute Style | Spiral | Cut | Cutting Dia. Tolerance | Rate of Taper | For Use On | Each | |
High-Speed Steel | |||||||||||||
| 7/0 | 0.0666" | 0.0497" | 13/16" | 1 13/16" | 3 | Helical Spiral | Left Hand | Right Hand | -0.001" to 0.001" | 1/4" per 12" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 000000 |
| 6/0 | 0.0806" | 0.0611" | 15/16" | 1 15/16" | 3 | Helical Spiral | Left Hand | Right Hand | -0.001" to 0.001" | 1/4" per 12" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
| 5/0 | 0.0966" | 0.0719" | 1 3/16" | 2 3/16" | 3 | Helical Spiral | Left Hand | Right Hand | -0.001" to 0.001" | 1/4" per 12" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
| 4/0 | 0.1142" | 0.0869" | 1 5/16" | 2 5/16" | 3 | Helical Spiral | Left Hand | Right Hand | -0.001" to 0.001" | 1/4" per 12" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
| 3/0 | 0.1302" | 0.1029" | 1 5/16" | 2 5/16" | 3 | Helical Spiral | Left Hand | Right Hand | -0.001" to 0.001" | 1/4" per 12" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
| 2/0 | 0.1462" | 0.1137" | 1 9/16" | 2 9/16" | 3 | Helical Spiral | Left Hand | Right Hand | -0.001" to 0.001" | 1/4" per 12" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
| 0 | 0.1638" | 0.1287" | 1 11/16" | 2 15/16" | 3 | Helical Spiral | Left Hand | Right Hand | -0.001" to 0.001" | 1/4" per 12" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
| 1 | 0.1798" | 0.1447" | 1 11/16" | 2 15/16" | 3 | Helical Spiral | Left Hand | Right Hand | -0.001" to 0.001" | 1/4" per 12" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
| 2 | 0.2008" | 0.1605" | 1 15/16" | 3 3/16" | 3 | Helical Spiral | Left Hand | Right Hand | -0.001" to 0.001" | 1/4" per 12" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
| 3 | 0.2294" | 0.1813" | 2 5/16" | 3 11/16" | 3 | Helical Spiral | Left Hand | Right Hand | -0.001" to 0.001" | 1/4" per 12" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
| 4 | 0.2604" | 0.2071" | 2 9/16" | 4 1/16" | 3 | Helical Spiral | Left Hand | Right Hand | -0.001" to 0.001" | 1/4" per 12" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
| 5 | 0.2994" | 0.2409" | 2 13/16" | 4 5/16" | 3 | Helical Spiral | Left Hand | Right Hand | -0.001" to 0.001" | 1/4" per 12" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
| 6 | 0.3540" | 0.2773" | 3 11/16" | 5 7/16" | 3 | Helical Spiral | Left Hand | Right Hand | -0.001" to 0.001" | 1/4" per 12" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
| 7 | 0.4220" | 0.3297" | 4 7/16" | 6 5/16" | 3 | Helical Spiral | Left Hand | Right Hand | -0.001" to 0.001" | 1/4" per 12" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
| 8 | 0.5050" | 0.3971" | 5 3/16" | 7 3/16" | 3 | Helical Spiral | Left Hand | Right Hand | -0.001" to 0.001" | 1/4" per 12" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 000000 |
| 9 | 0.6066" | 0.4805" | 6 1/16" | 8 5/16" | 3 | Helical Spiral | Left Hand | Right Hand | -0.001" to 0.001" | 1/4" per 12" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 000000 |
Metric Size Round-Shank Reamers for Taper-Pin Holes
Use these tools to accurately ream existing holes for standard taper pins. The helical flutes have a left-hand spiral that pushes chips downward to reduce the risk of breakage and create a smooth finish.
For technical drawings and 3-D models, click on a part number.
Reamer Dia. | Lg. | Direction | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Taper Pin Number, mm | (A), mm | (B), mm | Flute, mm | Overall, mm | Number of Flutes | Flute Style | Spiral | Cut | Cutting Dia. Tolerance, mm | Rate of Taper | For Use On | Each | |
High-Speed Steel | |||||||||||||
| 2 | 2.8600 | 1.9000 | 48 | 73 | 3 | Helical Spiral | Left Hand | Right Hand | -0.0254 to 0.0254 | 1/4" per 12" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 00000000 | 000000 |
| 2.5 | 3.4600 | 2.4000 | 53 | 79 | 3 | Helical Spiral | Left Hand | Right Hand | -0.0254 to 0.0254 | 1/4" per 12" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 00000000 | 00000 |
| 3 | 4.1600 | 2.9000 | 63 | 88 | 3 | Helical Spiral | Left Hand | Right Hand | -0.0254 to 0.0254 | 1/4" per 12" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 00000000 | 00000 |
| 4 | 5.4000 | 3.9000 | 75 | 100 | 3 | Helical Spiral | Left Hand | Right Hand | -0.0254 to 0.0254 | 1/4" per 12" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 00000000 | 00000 |
| 5 | 6.6400 | 4.9000 | 87 | 115 | 3 | Helical Spiral | Left Hand | Right Hand | -0.0254 to 0.0254 | 1/4" per 12" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 00000000 | 00000 |
| 6 | 8.2800 | 5.9000 | 119 | 150 | 3 | Helical Spiral | Left Hand | Right Hand | -0.0254 to 0.0254 | 1/4" per 12" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 00000000 | 00000 |
| 8 | 10.7200 | 7.9000 | 141 | 177 | 3 | Helical Spiral | Left Hand | Right Hand | -0.0254 to 0.0254 | 1/4" per 12" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 00000000 | 00000 |
| 10 | 13.1600 | 9.9000 | 163 | 205 | 3 | Helical Spiral | Left Hand | Right Hand | -0.0254 to 0.0254 | 1/4" per 12" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 00000000 | 000000 |
| 12 | 15.7400 | 11.8600 | 194 | 240 | 3 | Helical Spiral | Left Hand | Right Hand | -0.0254 to 0.0254 | 1/4" per 12" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 00000000 | 000000 |
| 13 | 16.7400 | 12.8000 | 194 | 240 | 3 | Helical Spiral | Left Hand | Right Hand | -0.0254 to 0.0254 | 1/4" per 12" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 00000000 | 000000 |