General Features

• Manufactured from round bar with a hot forged integral head on one end and a rolled thread on the other end.
• Expansion shell bolts are compatible with DSI expansion shells. Refer to Section B4.9 for details of the expansion shell range.
• Expansion shell bolts with integral head, are suitable for use in areas where headroom is low or when long bolt tails are undesirable.
• The rolled thread strength is nominally equal to the column strength of the bar.
• For longer term installations these bolts can be grouted with cementitious grouts.
• Corrosion protection may be provided by hot dip galvanizing (refer to Section G). Alternative coatings are available by negotiation.

Installation Guidelines

• It is imperative that the bolt hole diameter suits the expansion shell to be used.
• The length of the hole must be longer than the bolt by approximately 50mm.
• The expansion shell, supplied separately, is screwed onto the bolt until the bolt thread just protrudes through the expansion shell plug.
• After placing the bolt in the hole to its full length, the bolt head is rotated to set the shell and tension the bolt.

Standard Lengths & Packaging

• Standard bolt lengths range from 900 to 2400mm in 300mm increments.
• Non-standard lengths are available by negotiation.
• Bolts are packaged in bundles with threads protected by heavy duty polyethylene bags.

Notes

• Only DSI rock bolt components should be used in order to obtain full performance of the bolt system.
• DSI's Mining Products Division is Quality Assured to ISO 9001:2000, Registration No.QAC/R61/0315.