Step drag bits are the most common used drag bit in the world today.
They are designed to drill in soft to medium formations. Most common areas of use are sand, clay and some soft rock. Step drag bits uses include drilling water wells, mining, geothermal, environmental & exploration drilling.
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- Small step bit
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- Large step bit
Mash Step bits design features include:
- a solid one piece heat treated, 4140 alloy steel body for bit strength & durability
- hardness rated 24-28 Rockwell
- 3/16 Tungsten carbide profile cutting edges
- Ultra high-strength brazing to ensure bit toughness
- CNC threaded machining for proper installation & use
Mash Bits supplies a full size range of step drag bits.
| Short Step Drag Bit Diameter | Large Step Drag Bit Diameter | ||||
|---|---|---|---|---|---|
| Inches | mm | PIN type | Inches | mm | PIN type |
| 3¼ to 3⅞ | 82.5 to 98 | 2⅜ API Reg. | 5¾ to 6 | 146 to 152 | 3½ API Reg. |
| 4 to 4⅞ | 101 to 122 | 2⅜ API Reg. | 6 to 6¾ | 152 to 171 | 3½ API Reg. |
| 5 to 5⅞ | 127 to 14 | 2⅜ API Reg. | 7 to 7⅞ | 178 to 200 | 3½ API Reg. |
| 6 to 6¾ | 152 to 171 | 2⅜ API Reg. | 8 to 8¾ | 203 to 222 | 3½ API Reg. |
| 14 ¾ to 17½ | 375 to 445 | 3½ API Reg. | |||
Note: all large step bits are available in 4½ API Reg. & 6⅝ API Reg.