MP1 Bolt

MP1 Bolt


The MP1 Bolt is an encapsulated, end-anchored yielding bolt for mechanised installations. The end anchor provides immediate support upon installation with additional anchorage post-encapsulation of the installed MP1 Bolt.

To aid mechanised installation, the end anchor is shielded by a steel sleeve and is only activated once the MP1 Bolt is fully inserted into the support hole.

The MP1 Bolt can be supplied with Ø18 mm or Ø20 mm bar depending on requirements. The unit is provided with a load indicator to confirm correct tensioning of the unit when installed. The MP1 Bolt can accommodate a secondary push on or screw on mesh washer.

A specially designed system ensures easy mechanised or manual encapsulation of the installed MP1 Bolt with minimal spillage during pumping of resin or grout.

Benefits of the bolt

  • High energy absorption
  • Immediate support
  • Pre-tensionable with load indicator
  • Easy encapsulation with reduced spillage
  • Can include attachment points for meshing and lacing directly onto the bolt


Bolt diameter (mm) Ø18 Ø20
Length of bolt (m)* 1.8 – 3.0 1.8 – 3.0
Hole size range (mm) Ø38– Ø43 Ø38– Ø43
Minimum yield load (kN) 120 150
Minimum ultimate tensile load (kN) 165 205
Minimum elongation** 22% 22%
*Non-standard lengths can be accommodated upon request
**Tested as per SANS 6892-1:2010 (Ed. 1.00)
MP1 Bolt
MP1 Bolt detail
MP1 Bolt detail