M24 Rock Bolts

M24 Rock Bolts

M24 Rock Bolts (also known as coal bolts) have been developed for use in point anchored or fully encapsulated roof and rib bolting applications.

Supplied complete with an anti-friction washer, dome washer and hexagonal 36 mm drive nut. 

  • Recommended for use in 27 – 28 mm diameter holes
  • Manufactured with a rolled M24 x 3.0mm pitch right hand thread
  • Proven historical performance and extensive quality controlled manufacture
  • Point anchored or fully encapsulated roof & rib bolting applications
  • Multiple lengths, diameters, pin and paddle configurations
  • High grade 'X' and 'S' grade steel with a ribbed surface profile for enhanced resin mixing and load transfer
  • Superior steel grade for greater performance in conditions subject to stress corrosion cracking
  • High load transfer

 

 

Advantages



Point anchoring


Encapsulated roof bolting


Ribbed surface profile

Mechanical Properties (Typical)

Mechanical Properties M24 X Grade M24 S Grade

Nominal Rib Height Diameter (mm)

23.2 23.2

Nominal Cross Sectional Area- Bar (mm2)

370 370

Yield Strength (MPa)

650 340

Tensile Strength (MPa)

890 490
Tensile Force Typical (MT) 33.7 18.6

Elongation (%) 5D

19 27

Mass per metre – Bar (kg/m)

2.9 2.9

 

Plates

We manufacture a comprehensive range of specially designed plates for use with rock and cable bolts.

Plates most typically used with cable bolts are:

Crown Plate 150x150x5mm
Dome Plate 150x150x6mm, 8mm, 10mm
Combi Plate

240x300mm
125x125x4mm

 

Packaging

Bolts are usually packaged in bundles of 50 with the option to plastic wrap and strap washer, nuts and threads. Bundles of 60 are also available where required. Individual bolt lengths are visually identifiable by a coloured dome washer on each bolt.

 

Coatings

Rock Bolts are available in black or hot dip steel.

For more information download the technical datasheet or contact Minova.


 

 

Industry Sectors


Coal Mining

Common Uses


Rock Bolting


Roof Control


Rib Bolting

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Brochure

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Industry experience and knowledge