System of Measurement System of Measurement |
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For Drill Bit Size Decimal Equivalent For Drill Bit SizeDecimal Equivalent |
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For Drill Bit System of Measurement For Drill Bit Systemof Measurement |
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Material Material |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement)  |
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Letter Size Depth-Limiting Drill Bit Stop Collars
Ensure identical hole depths every time. Position the collar on your bit and tighten the set screw.
For technical drawings and 3-D models, click on a part number.
For Drill Bit | |||||||
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| Size | Size Decimal Equivalent | Overall Lg. | OD | Hex Key Size for Set Screw | Material | Each | |
| A | 0.2340" | 1/2" | 1/2" | 3/32" | Steel | 00000000 | 00000 |
| B | 0.2380" | 1/2" | 1/2" | 3/32" | Steel | 00000000 | 0000 |
| C | 0.2420" | 1/2" | 1/2" | 3/32" | Steel | 00000000 | 0000 |
| D | 0.2460" | 1/2" | 1/2" | 3/32" | Steel | 00000000 | 0000 |
| F | 0.2570" | 5/8" | 5/8" | 3/32" | Steel | 00000000 | 0000 |
| G | 0.2610" | 5/8" | 5/8" | 3/32" | Steel | 00000000 | 0000 |
| H | 0.2660" | 5/8" | 5/8" | 3/32" | Steel | 00000000 | 0000 |
| I | 0.2720" | 5/8" | 5/8" | 3/32" | Steel | 00000000 | 0000 |
| J | 0.2770" | 5/8" | 5/8" | 3/32" | Steel | 00000000 | 0000 |
| K | 0.2810" | 5/8" | 5/8" | 3/32" | Steel | 00000000 | 0000 |
| L | 0.2900" | 5/8" | 5/8" | 3/32" | Steel | 00000000 | 0000 |
| M | 0.2950" | 5/8" | 5/8" | 3/32" | Steel | 00000000 | 0000 |
| N | 0.3020" | 5/8" | 5/8" | 3/32" | Steel | 00000000 | 0000 |
| O | 0.3160" | 3/4" | 3/4" | 3/32" | Steel | 00000000 | 0000 |
| P | 0.3230" | 3/4" | 3/4" | 3/32" | Steel | 00000000 | 0000 |
| Q | 0.3320" | 3/4" | 3/4" | 3/32" | Steel | 00000000 | 0000 |
| R | 0.3390" | 3/4" | 3/4" | 3/32" | Steel | 00000000 | 0000 |
| S | 0.3480" | 3/4" | 3/4" | 3/32" | Steel | 00000000 | 0000 |
| T | 0.3580" | 3/4" | 3/4" | 3/32" | Steel | 00000000 | 0000 |
| U | 0.3680" | 3/4" | 3/4" | 3/32" | Steel | 00000000 | 0000 |
| V | 0.3770" | 7/8" | 7/8" | 1/8" | Steel | 00000000 | 0000 |
| W | 0.3860" | 7/8" | 7/8" | 1/8" | Steel | 00000000 | 0000 |
| X | 0.3970" | 7/8" | 7/8" | 1/8" | Steel | 00000000 | 0000 |
| Y | 0.4040" | 7/8" | 7/8" | 1/8" | Steel | 00000000 | 0000 |
| Z | 0.4130" | 7/8" | 7/8" | 1/8" | Steel | 00000000 | 0000 |