MP1 Slimline

MP1 Slimline


The MP1 Slimline Bolt is a grouted mechanised end-anchored yielding bolt. The end anchor provides immediate support upon installation and two pairs of double paddles act as additional anchors once the bolt is grouted. The end anchor is shielded by a grouting sleeve which is activated on the collapse of the grout sleeve spacer.

The MP1 Slimline 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 Slimline Bolt can accommodate a secondary push on or screw on mesh washer.

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

Benefits of the bolt

  • High yield
  • High energy absorption
  • Immediate support
  • Pre-tensionable with load indicator
  • Easy grouting with reduced spillage
  • Can include an alternative washer plate with 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 ISO 6892-1:2010 (Ed. 1.00)
MP1 Slimline
MP1 Slimline end