About Drill Bits
Compare material, finish, length class, and decimal size equivalents.
About Reamers
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Round-Shank Drill Reamers
Drill and finish holes in a single pass with these dual-purpose tools. The tapered tip gradually pierces your material to reduce friction, and the straight flutes make clean cuts without chipping or peeling the edge of the hole. Made from solid carbide, these drill reamers are strong and heat resistant. The flutes stay sharp even when cutting abrasive materials such as carbon fiber, fiberglass, and graphite. Use them in drill presses or other machines—carbide is brittle, and will break if used to drill by hand.
Dia. | Lg. | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Reamer Size | Reamer | Shank | Max. Drilling Dp. | Flute | Overall | Number of Flutes | Flute Style | Cutting Dia. Tolerance | For Use On | Each | |
Carbide | |||||||||||
Inch | |||||||||||
| 1/8" | 0.1250" | 1/8" | 0.75" | 3/4" | 3" | 4 | Straight | 0" to 0.0005" | Carbon Fiber, Fiberglass, Graphite | 0000000 | 000000 |
| 3/16" | 0.1875" | 0.187" | 1.06" | 1 1/16" | 3" | 4 | Straight | 0" to 0.0005" | Carbon Fiber, Fiberglass, Graphite | 0000000 | 00000 |
| 13/64" | 0.2031" | 0.203" | 2" | 2" | 4" | 4 | Straight | 0" to 0.0005" | Carbon Fiber, Fiberglass, Graphite | 0000000 | 000000 |
| 7/32" | 0.2188" | 0.219" | 2.13" | 2 1/8" | 4" | 4 | Straight | 0" to 0.0005" | Carbon Fiber, Fiberglass, Graphite | 0000000 | 000000 |
| 1/4" | 0.2500" | 1/4" | 2.13" | 2 1/8" | 4" | 4 | Straight | 0" to 0.0005" | Carbon Fiber, Fiberglass, Graphite | 0000000 | 000000 |
| 9/32" | 0.2812" | 0.281" | 2.75" | 2 3/4" | 4" | 4 | Straight | 0" to 0.0005" | Carbon Fiber, Fiberglass, Graphite | 0000000 | 000000 |
| 19/64" | 0.2969" | 0.297" | 2.94" | 2 15/16" | 4" | 4 | Straight | 0" to 0.0005" | Carbon Fiber, Fiberglass, Graphite | 0000000 | 000000 |
| 5/16" | 0.3125" | 0.312" | 1.81" | 1 13/16" | 4" | 4 | Straight | 0" to 0.0005" | Carbon Fiber, Fiberglass, Graphite | 0000000 | 000000 |
| 21/64" | 0.3280" | 0.328" | 1.88" | 1 7/8" | 4" | 4 | Straight | 0" to 0.0005" | Carbon Fiber, Fiberglass, Graphite | 0000000 | 000000 |
| 11/32" | 0.3438" | 0.344" | 2" | 2" | 4" | 4 | Straight | 0" to 0.0005" | Carbon Fiber, Fiberglass, Graphite | 0000000 | 000000 |
| 3/8" | 0.3750" | 3/8" | 2.19" | 2 3/16" | 4" | 4 | Straight | 0" to 0.0005" | Carbon Fiber, Fiberglass, Graphite | 0000000 | 000000 |
| 25/64" | 0.3900" | 0.39" | 3.06" | 3 1/16" | 6" | 4 | Straight | 0" to 0.0005" | Carbon Fiber, Fiberglass, Graphite | 0000000 | 000000 |
| 7/16" | 0.4375" | 0.437" | 3.44" | 3 7/16" | 6" | 4 | Straight | 0" to 0.0005" | Carbon Fiber, Fiberglass, Graphite | 0000000 | 000000 |
| 1/2" | 0.5000" | 1/2" | 3.94" | 3 15/16" | 6" | 4 | Straight | 0" to 0.0005" | Carbon Fiber, Fiberglass, Graphite | 0000000 | 000000 |
Wire Gauge | |||||||||||
| 40 ga | 0.0980" | 0.098" | 0.56" | 9/16" | 3" | 4 | Straight | 0" to 0.0005" | Carbon Fiber, Fiberglass, Graphite | 0000000 | 00000 |
| 30 ga | 0.1285" | 0.128" | 0.75" | 3/4" | 3" | 4 | Straight | 0" to 0.0005" | Carbon Fiber, Fiberglass, Graphite | 0000000 | 00000 |
| 20 ga | 0.1610" | 0.161" | 0.94" | 15/16" | 3" | 4 | Straight | 0" to 0.0005" | Carbon Fiber, Fiberglass, Graphite | 0000000 | 00000 |
| 11 ga | 0.1910" | 0.191" | 1.88" | 1 7/8" | 4" | 4 | Straight | 0" to 0.0005" | Carbon Fiber, Fiberglass, Graphite | 0000000 | 000000 |
| 10 ga | 0.1935" | 0.193" | 1.88" | 1 7/8" | 4" | 4 | Straight | 0" to 0.0005" | Carbon Fiber, Fiberglass, Graphite | 0000000 | 000000 |
| 7 ga | 0.2010" | 0.201" | 2" | 2" | 4" | 4 | Straight | 0" to 0.0005" | Carbon Fiber, Fiberglass, Graphite | 0000000 | 000000 |
| 2 ga | 0.2210" | 0.221" | 2.19" | 2 3/16" | 4" | 4 | Straight | 0" to 0.0005" | Carbon Fiber, Fiberglass, Graphite | 0000000 | 000000 |
| 1 ga | 0.2280" | 0.228" | 2.25" | 2 1/4" | 4" | 4 | Straight | 0" to 0.0005" | Carbon Fiber, Fiberglass, Graphite | 0000000 | 000000 |
Inch Size Combination Drill Bit/Round-Shank Reamers for Taper-Pin Holes
Drill and ream holes for taper pins with the same tool. These tools have chip breakers on the cutting edge.
For technical drawings and 3-D models, click on a part number.
Reamer Dia. | Lg. | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Taper Pin Number | (A) | (B) | Flute | Overall | Number of Flutes | Flute Style | Spiral Direction | Rate of Taper | Point Angle | For Use On | Each | |
High-Speed Steel | ||||||||||||
| 2/0 | 0.1430" | 0.1013" | 2" | 3 1/4" | 2 | Spiral | Right Hand | 1" per 50" | 118° | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 000000 |
| 3/0 | 0.1270" | 0.0879" | 1 7/8" | 3 1/8" | 2 | Spiral | Right Hand | 1" per 50" | 118° | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
| 4/0 | 0.1110" | 0.0772" | 1 5/8" | 2 7/8" | 2 | Spiral | Right Hand | 1" per 50" | 118° | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
| 5/0 | 0.0950" | 0.0664" | 1 3/8" | 2 5/8" | 2 | Spiral | Right Hand | 1" per 50" | 118° | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
| 0 | 0.1580" | 0.1137" | 2 1/8" | 3 3/8" | 2 | Spiral | Right Hand | 1" per 50" | 118° | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
| 1 | 0.1740" | 0.1245" | 2 3/8" | 3 3/4" | 2 | Spiral | Right Hand | 1" per 50" | 118° | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
| 2 | 0.1950" | 0.1325" | 3" | 4 3/8" | 2 | Spiral | Right Hand | 1" per 50" | 118° | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
| 3 | 0.2200" | 0.1575" | 3" | 4 1/2" | 2 | Spiral | Right Hand | 1" per 50" | 118° | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 000000 |
| 4 | 0.2530" | 0.1775" | 3 5/8" | 5 1/4" | 2 | Spiral | Right Hand | 1" per 50" | 118° | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
| 5 | 0.2920" | 0.1983" | 4 1/2" | 6 1/4" | 2 | Spiral | Right Hand | 1" per 50" | 118° | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 000000 |
| 6 | 0.3470" | 0.2455" | 4 7/8" | 6 7/8" | 2 | Spiral | Right Hand | 1" per 50" | 118° | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 000000 |
| 7 | 0.4120" | 0.2818" | 6 1/4" | 8 1/2" | 2 | Spiral | Right Hand | 1" per 50" | 118° | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 000000 |
| 8 | 0.5060" | 0.3600" | 7" | 9 3/4" | 2 | Spiral | Right Hand | 1" per 50" | 118° | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 000000 |
| 9 | 0.6330" | 0.4638" | 8 1/8" | 11 3/8" | 2 | Spiral | Right Hand | 1" per 50" | 118° | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 000000 |
| 10 | 0.7600" | 0.5647" | 9 3/8" | 12 7/8" | 2 | Spiral | Right Hand | 1" per 50" | 118° | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 000000 |
Metric Size Combination Drill Bit/Round-Shank Reamers for Taper-Pin Holes
The same tool drills and reams holes for taper pins. They have chip breakers on the cutting edge.
For technical drawings and 3-D models, click on a part number.
Reamer Dia. | Lg. | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Taper Pin Number, mm | (A), mm | (B), mm | Flute, mm | Overall, mm | Number of Flutes | Flute Style | Spiral Direction | Rate of Taper | Point Angle | For Use On | Each | |
High-Speed Steel | ||||||||||||
| 2 | 2.8400 | 1.9800 | 43 | 65 | 2 | Spiral | Right Hand | 1" per 50" | 118° | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 000000 |
| 2.5 | 3.4600 | 2.3300 | 56 | 89 | 2 | Spiral | Right Hand | 1" per 50" | 118° | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
| 3 | 4.1600 | 2.8400 | 66 | 98 | 2 | Spiral | Right Hand | 1" per 50" | 118° | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
| 4 | 5.4000 | 3.7800 | 81 | 119 | 2 | Spiral | Right Hand | 1" per 50" | 118° | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
| 5 | 6.6400 | 4.7000 | 97 | 138 | 2 | Spiral | Right Hand | 1" per 50" | 118° | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
| 6 | 8.2800 | 5.7100 | 129 | 179 | 2 | Spiral | Right Hand | 1" per 50" | 118° | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
| 8 | 10.7200 | 7.6400 | 154 | 211 | 2 | Spiral | Right Hand | 1" per 50" | 118° | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 000000 |
| 10 | 13.1600 | 9.6500 | 175 | 246 | 2 | Spiral | Right Hand | 1" per 50" | 118° | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 000000 |
| 12 | 15.7000 | 11.9600 | 198 | 275 | 2 | Spiral | Right Hand | 1" per 50" | 118° | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 000000 |
| 14 | 18.0000 | 13.8000 | 210 | 310 | 2 | Spiral | Right Hand | 1" per 50" | 118° | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 000000 |
| 16 | 20.4000 | 15.8000 | 230 | 335 | 2 | Spiral | Right Hand | 1" per 50" | 118° | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 000000 |