M8 bolts are available in 6cm (2.3in), 7.8cm (3in) and 10cm (3.9in) lengths.

The 6cm bolt has one expanding collar for and the 7.8cm and 10cm bolts have 2 expanding collars. Each bolt comes with a flanged nut.

These bolts are for hard compact rock (limestone, marble, dolomite). For caving use only. Use our M10 or M12 bolts for rock climbing or mountaineering.

6cm
Tensile strength = 17 Kn
Shear strength = 18 Kn
Weight: 27 grams

7.8cm
Tensile strength = 20 Kn
Shear strength = 20 Kn
Weight: 33 grams

10cm
Tensile strength = 20 Kn
Shear strength = 20 Kn
Weight: 42 grams

Made in Italy by Raumer.

Installation guide