System of Measurement System of Measurement |
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Size Size |
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Decimal Size Equivalent Decimal Size Equivalent |
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For Use On For Use On |
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Point Angle Point Angle |
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Length Class Length Class |
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 | Jobbers' Length |
Shank Size Shank Size |
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Shank Type Shank Type |
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 | Round |
Point Style Point Style |
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| Standard |
Flute Direction Flute Direction |
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| Right Hand |
Overall Length Overall Length |
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Material Material |
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Finish Finish |
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Maximum Drilling Depth Maximum Drilling Depth |
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Individual/Set Individual/Set |
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Bit Style Bit Style |
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 | Spiral Flute |
DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement)  |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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Drill Bit Decimal Size Equivalents
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About Drill Bits
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Drill Bits for Plastic
The sharp point allows for gradual penetration to reduce friction and eliminate cracking and chipping when drilling in plastic. These bits are jobbers' length and have the rigidity and length required for most applications.
For technical drawings and 3-D models, click on a part number.
Shank | ||||||||
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| Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | Each | |
Inch | ||||||||
Uncoated High-Speed Steel | ||||||||
| 1/8" | 0.125" | 2 3/4" | 1.5" | Round | 1/8" | Standard | 00000000 | 00000 |
| 9/64" | 0.1406" | 2 7/8" | 1.75" | Round | 9/64" | Standard | 00000000 | 0000 |
| 5/32" | 0.1563" | 3 1/8" | 1.94" | Round | 5/32" | Standard | 00000000 | 0000 |
| 11/64" | 0.1719" | 3 1/4" | 2.13" | Round | 11/64" | Standard | 00000000 | 0000 |
| 3/16" | 0.1875" | 3 1/2" | 2.13" | Round | 3/16" | Standard | 00000000 | 0000 |
| 13/64" | 0.2031" | 3 5/8" | 2.44" | Round | 13/64" | Standard | 00000000 | 0000 |
| 7/32" | 0.2188" | 3 3/4" | 2.5" | Round | 7/32" | Standard | 00000000 | 0000 |
| 15/64" | 0.2344" | 3 7/8" | 2.63" | Round | 15/64" | Standard | 00000000 | 00000 |
| 1/4" | 0.25" | 4" | 2.44" | Round | 1/4" | Standard | 00000000 | 0000 |
| 17/64" | 0.2656" | 4 1/8" | 2.88" | Round | 17/64" | Standard | 00000000 | 00000 |
| 9/32" | 0.2813" | 4 1/4" | 2.94" | Round | 9/32" | Standard | 00000000 | 00000 |
| 19/64" | 0.2969" | 4 3/8" | 3.06" | Round | 19/64" | Standard | 00000000 | 00000 |
| 5/16" | 0.3125" | 3 7/8" | 1.75" | Round | 1/4" | Standard | 00000000 | 00000 |
| 21/64" | 0.3281" | 4 5/8" | 3.31" | Round | 21/64" | Standard | 00000000 | 00000 |
| 11/32" | 0.3438" | 4 3/4" | 3.44" | Round | 11/32" | Standard | 00000000 | 00000 |
| 23/64" | 0.3594" | 4 7/8" | 3.5" | Round | 23/64" | Standard | 00000000 | 00000 |
| 3/8" | 0.375" | 4 3/8" | 2.25" | Round | 1/4" | Standard | 00000000 | 00000 |
| 25/64" | 0.3906" | 5 1/8" | 3.75" | Round | 25/64" | Standard | 00000000 | 00000 |
| 13/32" | 0.4063" | 5 1/8" | 3.88" | Round | 13/32" | Standard | 00000000 | 00000 |
| 27/64" | 0.4219" | 5 3/8" | 3.94" | Round | 27/64" | Standard | 00000000 | 00000 |
| 7/16" | 0.4375" | 4 3/4" | 2.5" | Round | 1/4" | Standard | 00000000 | 00000 |
| 29/64" | 0.4531" | 5 5/8" | 4.19" | Round | 29/64" | Standard | 00000000 | 00000 |
| 15/32" | 0.4688" | 5 3/4" | 4.31" | Round | 15/32" | Standard | 00000000 | 00000 |
| 31/64" | 0.4844" | 5 7/8" | 4.38" | Round | 31/64" | Standard | 00000000 | 00000 |
| 1/2" | 0.5" | 5 1/8" | 2.63" | Round | 1/4" | Standard | 00000000 | 00000 |
| 33/64" | 0.5156" | 6" | 2.12" | Round | 1/2" | Standard | 00000000 | 00000 |
| 17/32" | 0.5313" | 6" | 2.12" | Round | 1/2" | Standard | 00000000 | 00000 |
| 35/64" | 0.5469" | 6" | 2.12" | Round | 1/2" | Standard | 00000000 | 00000 |
| 9/16" | 0.5625" | 6" | 2.12" | Round | 1/2" | Standard | 00000000 | 00000 |
Wire Gauge | ||||||||
Uncoated High-Speed Steel | ||||||||
| 31 ga | 0.12" | 2 3/4" | 1" | Round | 0.12" | Standard | 000000000 | 0000 |
| 30 ga | 0.1285" | 2 3/4" | 1" | Round | 0.1285" | Standard | 000000000 | 0000 |
| 29 ga | 0.136" | 2 7/8" | 1.12" | Round | 0.136" | Standard | 000000000 | 0000 |
| 28 ga | 0.1405" | 2 7/8" | 1.12" | Round | 0.1405" | Standard | 000000000 | 0000 |
| 27 ga | 0.144" | 3" | 1.25" | Round | 0.144" | Standard | 000000000 | 0000 |
| 26 ga | 0.147" | 3" | 1.25" | Round | 0.147" | Standard | 000000000 | 0000 |
| 25 ga | 0.1495" | 3" | 1.25" | Round | 0.1495" | Standard | 000000000 | 0000 |
| 24 ga | 0.152" | 3 1/8" | 1.31" | Round | 0.152" | Standard | 000000000 | 0000 |
| 23 ga | 0.154" | 3 1/8" | 1.31" | Round | 0.154" | Standard | 000000000 | 0000 |
| 22 ga | 0.157" | 3 1/8" | 1.31" | Round | 0.157" | Standard | 000000000 | 0000 |
| 21 ga | 0.159" | 3 1/4" | 1.37" | Round | 0.159" | Standard | 000000000 | 0000 |
| 20 ga | 0.161" | 3 1/4" | 1.37" | Round | 0.161" | Standard | 000000000 | 0000 |
| 19 ga | 0.166" | 3 1/4" | 1.37" | Round | 0.166" | Standard | 000000000 | 0000 |
| 18 ga | 0.1695" | 3 1/4" | 1.37" | Round | 0.1695" | Standard | 000000000 | 0000 |
| 17 ga | 0.173" | 3 3/8" | 1.5" | Round | 0.173" | Standard | 000000000 | 0000 |
| 16 ga | 0.177" | 3 3/8" | 1.5" | Round | 0.177" | Standard | 000000000 | 0000 |
| 15 ga | 0.18" | 3 3/8" | 1.5" | Round | 0.18" | Standard | 000000000 | 0000 |
| 14 ga | 0.182" | 3 3/8" | 1.5" | Round | 0.182" | Standard | 000000000 | 0000 |
| 13 ga | 0.185" | 3 1/2" | 1.62" | Round | 0.185" | Standard | 000000000 | 0000 |
| 12 ga | 0.189" | 3 1/2" | 1.62" | Round | 0.189" | Standard | 000000000 | 0000 |
| 11 ga | 0.191" | 3 1/2" | 1.62" | Round | 0.191" | Standard | 000000000 | 0000 |
| 10 ga | 0.1935" | 3 5/8" | 1.75" | Round | 0.1935" | Standard | 000000000 | 0000 |
| 9 ga | 0.196" | 3 5/8" | 1.75" | Round | 0.196" | Standard | 000000000 | 0000 |
| 8 ga | 0.199" | 3 5/8" | 1.75" | Round | 0.199" | Standard | 000000000 | 0000 |
| 7 ga | 0.201" | 3 5/8" | 1.75" | Round | 0.201" | Standard | 000000000 | 0000 |
| 6 ga | 0.204" | 3 3/4" | 1.75" | Round | 0.204" | Standard | 000000000 | 0000 |
| 5 ga | 0.2055" | 3 3/4" | 1.75" | Round | 0.2055" | Standard | 000000000 | 0000 |
| 4 ga | 0.209" | 3 3/4" | 1.75" | Round | 0.209" | Standard | 000000000 | 0000 |
| 3 ga | 0.213" | 3 3/4" | 1.75" | Round | 0.213" | Standard | 000000000 | 0000 |
| 2 ga | 0.221" | 3 7/8" | 1.87" | Round | 0.221" | Standard | 000000000 | 0000 |
| 1 ga | 0.228" | 3 7/8" | 1.87" | Round | 0.228" | Standard | 000000000 | 0000 |
Letter | ||||||||
Uncoated High-Speed Steel | ||||||||
| A | 0.234" | 3 7/8" | 1.87" | Round | 0.234" | Standard | 000000000 | 0000 |
| B | 0.238" | 4" | 2" | Round | 0.238" | Standard | 000000000 | 0000 |
| C | 0.242" | 4" | 2" | Round | 0.242" | Standard | 000000000 | 0000 |
| D | 0.246" | 4" | 2" | Round | 0.246" | Standard | 000000000 | 0000 |
| E | 0.25" | 4" | 2" | Round | 1/4" | Standard | 000000000 | 0000 |
| F | 0.257" | 4 1/8" | 2.12" | Round | 0.257" | Standard | 000000000 | 0000 |
| G | 0.261" | 4 1/8" | 2.12" | Round | 0.261" | Standard | 000000000 | 0000 |
| H | 0.266" | 4 1/8" | 2.12" | Round | 0.266" | Standard | 000000000 | 0000 |
| I | 0.272" | 4 1/8" | 2.12" | Round | 0.272" | Standard | 000000000 | 0000 |
| J | 0.277" | 4 1/8" | 2.12" | Round | 0.277" | Standard | 000000000 | 0000 |
| K | 0.281" | 4 1/4" | 2.12" | Round | 0.281" | Standard | 000000000 | 0000 |
| L | 0.29" | 4 1/4" | 2.12" | Round | 0.29" | Standard | 000000000 | 0000 |
| M | 0.295" | 4 3/8" | 2.25" | Round | 0.295" | Standard | 000000000 | 00000 |
| N | 0.302" | 4 3/8" | 2.25" | Round | 0.302" | Standard | 000000000 | 00000 |
| O | 0.316" | 4 1/2" | 2.25" | Round | 0.316" | Standard | 000000000 | 00000 |
| P | 0.323" | 4 5/8" | 2.5" | Round | 0.323" | Standard | 000000000 | 00000 |
| Q | 0.332" | 4 3/4" | 2.62" | Round | 0.332" | Standard | 000000000 | 00000 |
| R | 0.339" | 4 3/4" | 2.62" | Round | 0.339" | Standard | 000000000 | 00000 |
| S | 0.348" | 4 7/8" | 2.62" | Round | 0.348" | Standard | 000000000 | 00000 |
| T | 0.358" | 4 7/8" | 2.62" | Round | 0.358" | Standard | 000000000 | 00000 |
| U | 0.368" | 5" | 2.75" | Round | 0.368" | Standard | 000000000 | 00000 |
| V | 0.377" | 5" | 2.75" | Round | 0.377" | Standard | 000000000 | 00000 |