About Reamers
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Inch Size Hand Reamers for Taper-Pin Holes
With Straight Flutes
With Spiral Flutes
Hand turn these reamers with an adjustable wrench, straight-handle tap wrench, or pin vise (sold separately) to ream existing holes for use with standard taper pins.
Straight-flute reamers are for general purpose cutting.
Spiral-flute reamers have a left-hand spiral and a right-hand cut. They push chips downward as they cut, so they’re often used in through holes. Spiral flutes create a smoother finish than straight flutes and work well in keyways and other applications with an interrupted cut.
For pin size numbers 7/0 to 4/0, use an adjustable wrench or pin vise. For pin size numbers 3/0 to 14, use a straight-handle tap wrench.
For technical drawings and 3-D models, click on a part number.
Reamer Dia. | Lg. | Direction | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Taper Pin Number | (A) | (B) | Square Shank Size | Flute | Overall | Number of Flutes | Spiral | Cut | Cutting Dia. Tolerance | Rate of Taper | For Use On | Each | |
High-Speed Steel | |||||||||||||
Straight Flute | |||||||||||||
| 7/0 | 0.0666" | 0.0497" | 0.0600" | 13/16" | 1 13/16" | 4 | __ | __ | -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" | 0.0700" | 15/16" | 1 15/16" | 4 | __ | __ | -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" | 0.0800" | 1 3/16" | 2 3/16" | 4 | __ | __ | -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" | 0.0950" | 1 5/16" | 2 5/16" | 4 | __ | __ | -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" | 0.1050" | 1 5/16" | 2 5/16" | 4 | __ | __ | -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" | 0.1150" | 1 9/16" | 2 9/16" | 4 | __ | __ | -0.001" to 0.001" | 1/4" per 12" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
| 0 | 0.1638" | 0.1287" | 0.1300" | 1 11/16" | 2 15/16" | 6 | __ | __ | -0.001" to 0.001" | 1/4" per 12" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
| 1 | 0.1798" | 0.1447" | 0.1400" | 1 11/16" | 2 15/16" | 6 | __ | __ | -0.001" to 0.001" | 1/4" per 12" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
| 2 | 0.2008" | 0.1605" | 0.1500" | 1 15/16" | 3 3/16" | 6 | __ | __ | -0.001" to 0.001" | 1/4" per 12" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
| 3 | 0.2294" | 0.1813" | 0.1750" | 2 5/16" | 3 11/16" | 6 | __ | __ | -0.001" to 0.001" | 1/4" per 12" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
| 4 | 0.2604" | 0.2071" | 0.2000" | 2 9/16" | 4 1/16" | 6 | __ | __ | -0.001" to 0.001" | 1/4" per 12" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
| 5 | 0.2994" | 0.2409" | 0.2350" | 2 13/16" | 4 5/16" | 6 | __ | __ | -0.001" to 0.001" | 1/4" per 12" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
| 6 | 0.3540" | 0.2773" | 0.2700" | 3 11/16" | 5 7/16" | 6 | __ | __ | -0.001" to 0.001" | 1/4" per 12" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
| 7 | 0.4220" | 0.3297" | 0.3050" | 4 7/16" | 6 5/16" | 6 | __ | __ | -0.001" to 0.001" | 1/4" per 12" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
| 8 | 0.5050" | 0.3971" | 0.3300" | 5 3/16" | 7 3/16" | 6 | __ | __ | -0.001" to 0.001" | 1/4" per 12" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 000000 |
| 9 | 0.6066" | 0.4805" | 0.4200" | 6 1/16" | 8 5/16" | 8 | __ | __ | -0.001" to 0.001" | 1/4" per 12" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 000000 |
| 10 | 0.7216" | 0.5799" | 0.4700" | 6 13/16" | 9 5/16" | 8 | __ | __ | -0.001" to 0.001" | 1/4" per 12" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 000000 |
| 11 | 0.8780" | 0.7060" | 0.5600" | 8 1/4" | 11 1/4" | 8 | __ | __ | 0" to 0.5" | 1/4" per 12" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 000000 |
| 12 | 1.0500" | 0.8420" | 0.5600" | 10" | 13 7/8" | 8 | __ | __ | 0" to 0.5" | 1/4" per 12" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 000000 |
| 13 | 1.2590" | 1.0090" | 0.7950" | 12" | 16" | 10 | __ | __ | 0" to 0.5" | 1/4" per 12" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 000000 |
| 14 | 1.5420" | 1.2500" | 1.0800" | 14" | 18 1/4" | 10 | __ | __ | 0" to 0.5" | 1/4" per 12" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 000000 |
Spiral Flute | |||||||||||||
| 7/0 | 0.0666" | 0.0497" | 0.0600" | 13/16" | 1 13/16" | 4 | 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 | 0.0806" | 0.0611" | 0.0700" | 15/16" | 1 15/16" | 4 | 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" | 0.0800" | 1 3/16" | 2 3/16" | 4 | 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" | 0.0950" | 1 5/16" | 2 5/16" | 4 | 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" | 0.1050" | 1 5/16" | 2 5/16" | 4 | 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" | 0.1150" | 1 9/16" | 2 9/16" | 4 | 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" | 0.1300" | 1 11/16" | 2 15/16" | 6 | 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" | 0.1400" | 1 11/16" | 2 15/16" | 6 | 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" | 0.1500" | 1 15/16" | 3 3/16" | 6 | 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" | 0.1750" | 2 5/16" | 3 11/16" | 6 | 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" | 0.2000" | 2 9/16" | 4 1/16" | 6 | 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" | 0.2350" | 2 13/16" | 4 5/16" | 6 | 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" | 0.2700" | 3 11/16" | 5 7/16" | 6 | 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" | 0.3050" | 4 7/16" | 6 5/16" | 6 | 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" | 0.3300" | 5 3/16" | 7 3/16" | 6 | 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" | 0.4200" | 6 1/16" | 8 5/16" | 8 | Left Hand | Right Hand | -0.001" to 0.001" | 1/4" per 12" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 000000 |
| 10 | 0.7216" | 0.5799" | 0.4700" | 6 13/16" | 9 5/16" | 8 | Left Hand | Right Hand | -0.001" to 0.001" | 1/4" per 12" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 000000 |
| 11 | 0.8780" | 0.7060" | 0.5600" | 8 1/4" | 11 1/4" | 8 | Left Hand | Right Hand | 0" to 0.5" | 1/4" per 12" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 000000 |
| 12 | 1.0500" | 0.8420" | 0.5600" | 10" | 13 7/8" | 8 | Left Hand | Right Hand | 0" to 0.5" | 1/4" per 12" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 000000 |
| 13 | 1.2590" | 1.0090" | 0.7950" | 12" | 16" | 10 | Left Hand | Right Hand | 0" to 0.5" | 1/4" per 12" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 000000 |
| 14 | 1.5420" | 1.2500" | 1.0800" | 14" | 18 1/4" | 10 | Left Hand | Right Hand | 0" to 0.5" | 1/4" per 12" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 000000 |