Pin Nut Standard

Breakout Torque Range

Indicating Colour For Torque Range	Typical Break-Out Torque Range
Low	20 - 30Nm	15 - 20ft lbs
High	100 - 110Nm	75 - 85ft lbs

General Features

DSI's Mining Products Division has continued to develop torque resistance nuts which provide greater benefits over and above the hot forged mixing square, only reqiring a single spanner operation in installation of chemical rock bolts. Similarly, there has been a continued quest to improve earlier versions of Drive Nuts.
DSI Nuts stand out in offering the following:

Pin placed both through bolt and nut for effective shearing.
No residual drag, hence the ability to gain a greater pre-tension of the bolt.
Less strain on operators using hand held roof bolters due to a smooth break-out mode. The Pin Nut is available to suit the majority of DSI rock bolts.
Corrosion protection can be provided by zinc plating to AS.1789-1984.
Australian Patent Number 647259 is applicable to DSI Pin Nut.

Notes

DSI's Mining Products Division is Quality Assured to ISO 9001:2000, Registration No.QAC/R61/0315.

PRINTED December 2006: All dimensions, weights, quantities and specifications are those applicable at the time of publication and may be amended from time to time.