For Croco 512 fastener a hole of 12 mm is drilled with edge drill to the aereted concrete (Siporex). The steel wedge of the 60-300 mm long Croco 512 - fastener is installed with setting tool or peg for setting tool. The steel wedge of the 250-500 mm long Croco 512 - fastener is installed with handpeg.
Croco 512 fasteners are used to fasten roof covering and insulation sheet to aerated concrete (Siporex). The flange is 50 mm. Length of the fastener is chosen according to insulation thickness.