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Compare material, finish, length class, and decimal size equivalents.
Drill Bits for Paper and Fabric
 |
A razor-sharp cutting edge makes clean holes through stacks of paper, cardboard, and fabric. These bits are often used for binding documents and sample swatches. They are standard Style A for use with Challenge and Lassco paper-drilling machines.
Shank | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Drill Bit Size | Decimal Size Equiv. | Overall Lg. | Max. Drilling Dp. | Type | Size | Mfr. | Each | |||
Core Bit | ||||||||||
Uncoated | ||||||||||
| 1/8" | 0.125" | 3 1/8" | 1" | Round | 11/16" | Challenge | 3164A21 | 000000 | ||
| 3/16" | 0.1875" | 3 1/8" | 1 3/4" | Round | 11/16" | Challenge | 3164A23 | 00000 | ||
| 1/4" | 0.25" | 3 1/8" | 2" | Round | 11/16" | Challenge | 3164A25 | 00000 | ||
| 5/16" | 0.3125" | 3 1/8" | 2" | Round | 11/16" | Challenge | 3164A27 | 00000 | ||
| 3/8" | 0.375" | 3 1/8" | 2" | Round | 11/16" | Challenge | 3164A29 | 00000 | ||
| 7/16" | 0.4375" | 3 1/8" | 2" | Round | 11/16" | Challenge | 3164A31 | 00000 | ||
| 1/2" | 0.5" | 3 1/8" | 2" | Round | 11/16" | Challenge | 3164A33 | 00000 | ||
