T Drive Nut
Breakout Torque Range
| Bolt Diameter | Typical Break-Out Torque Range | |
| M24 | 67-88Nm | 50-65ft lbs |
| M20 | 33-48Nm | 24-36ft lbs |
| M16 | 20-34Nm | 15-25ft lbs |
| 20mm Thread Bar (low torque) | 70-100Nm | 52-74ft lbs |
| 20mm Thread Bar (high torque) | 75-150Nm | 56-111ft lbs |
General Features
DSI have continued to develop torque resisting nuts which provide greater benefits over and above the hot forged mixing square only requiring a single spanner operation for the installation of chemical rock bolts.
DSI’s T Nut stands out in offering the following:
- Ability to be economically supplied with low volume bolt types.
- Consistent break out torque.
- Low residual drag from the nylon insert.
- Less strain on operators using hand held roof bolters due to a smooth break-out mode.
- Will not seize on bolt thread.
- The T Nut is available to suit the following type bolts:
- 24mm chemical bolts,
- 24mm chemical bolts,
- 20mm chemical bolts,
- 16mm chemical bolts and
- 20mm thread bar chemical bolts.
- Australian Patent Number 538338 is applicable to the DSI T Drive Nut.
Notes
- DSI's Mining Products Division is Quality Assured to ISO 9001:2000, Registration No.QAC/R61/0315.