These are wedge anchors, the base expands as you tighten the nut for a secure hold in concrete. They're often used to anchor machinery.
1. Drill
2. Clean the hole
3. Anchor objects aligned holes, insert the anchor bolt
4. Rotating the nut clockwise
5. Do not stop until you cannot tun screw any more
Screw Thread d | M8 | M8 | M8 | M10 | M10 | M10 | M12 | M12 | M12 | M12 | M12 | ||
L | 75 | 95 | 115 | 90 | 110 | 130 | 115 | 145 | 185 | 215 | 235 | ||
b | 25 | 25 | 25 | 30 | 30 | 30 | 35 | 35 | 35 | 35 | 35 | ||
Hole size(Diameter) | 8 | 8 | 8 | 10 | 10 | 10 | 12 | 12 | 12 | 12 | 12 | ||
Hole size(Depth) | 65 | 65 | 65 | 80 | 80 | 80 | 95 | 95 | 95 | 95 | 95 | ||
per unit≈kg | 0.031 | 0.038 | 0.044 | 0.061 | 0.068 | 0.08 | 0.106 | 0.138 | 0.156 | 0.191 | 0.21 |