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 Diameter Tolerance | For Use On | Each | |
Straight Flute | ||||||||
| 17/64" | 0.2656" | 1 1/2" | 6" | 6 | 0" to 0.0002" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 00000000 | 000000 |
Reamer | Lg. | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Size | Dia. | Flute | Overall | Number of Flutes | Cut Direction | Cutting Dia. Tolerance | For Use On | Each | |
Right-Hand Spiral Flute | |||||||||
| 17/64" | 0.2656" | 1 1/2" | 6" | 6 | Right Hand | 0" to 0.0002" | 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 | |||||||||
| 17/64" | 0.2656" | 1 1/2" | 6" | 6 | Straight | 0" to 0.0002" | Aluminum, Brass, Bronze, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel | 0000000 | 000000 |
Threaded-Shank Reamers
These reamers have a 1/4”-28 threaded shank. All have a built-in pilot with a 45° chamfer angle to maintain alignment in the hole.
For technical drawings and 3-D models, click on a part number.
Dia. | Lg. | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Reamer Size | Reamer | Pilot | Flute | Pilot | Overall | Number of Flutes | Flute Style | Cutting Dia. Tolerance | Pilot Cutting Dia. Tolerance | For Use On | Each | |
High-Speed Steel | ||||||||||||
| 17/64" | 0.2656" | 0.255" | 1 1/2" | 1/2" | 2 1/8" | 6 | Straight | 0" to 0.0002" | -0.001" to 0" | 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 | |||||||||||
| 7/16" | 0.4375" | 0.2656" | 1 1/4" | 4 3/8" | 5 7/8" | Left Hand | Right Hand | 0" to 0.01" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 000000 |
Inch Size High-Speed Steel Reamer Sets
Straight-flute reamers are for general purpose cutting.
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.
Direction | |||||||
|---|---|---|---|---|---|---|---|
| Sizes Included | Number of Pieces | Spiral | Cut | Container Type | For Use On | Set | |
High-Speed Steel | |||||||
Straight Flute | |||||||
| 1/16"-1/2" (Increments of 1/64") | 29 | __ | __ | Metal Case | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 0000000 |
| 1/16"-1/2" (Increments of 1/64") | 29 | __ | __ | Wood Case | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 000000 | 000000 |
Spiral Flute | |||||||
| 1/16"-1/2" (Increments of 1/64") | 29 | Right Hand | Right Hand | Metal Case | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 000000 | 00000000 |
Inch Size High-Speed Steel Drill-Length Reamer Sets
These reamers have the same overall length as jobbers’ drill bits for tool interchangeability. The overall length is shorter than standard-length reamers for added rigidity.
Straight-flute reamers are for general purpose cutting.
For technical drawings and 3-D models, click on a part number.
| Sizes Included | Number of Pieces | Container Type | For Use On | Set | |
High-Speed Steel | |||||
|---|---|---|---|---|---|
Straight Flute | |||||
| 1/16"-1/4" (Increments of 1/64") | 13 | Metal Case | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 000000 | 0000000 |
| 1/16"-1/2" (Increments of 1/64") | 29 | Metal Case | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 000000 | 000000 |