1, different shapes
Blasting screw: there is a ring cylinder on it, and there is a gap on this ring cylinder.
Jacking screw: A part of the nut structure may be deformed.
2, the usage is different
Exploding screw: when using, punch a hole in the wall, put the expansion bolt into the hole, and when tightening the bolt, the ring cylinder is squeezed and opened, so that the bolt is stuck in the hole and plays a fixed role.
Jacking screw: when the screw tightens the nut, the nut is deformed by pulling it, and at the same time, the nut is riveted on the workpiece, and then the nut is fixed on the workpiece.
Extended data
Expansion screws are divided into pulling and blasting screws and top blasting screws.
I. Scope of use
1. Fasten the air conditioner, water heater and range hood.
2. Fix frameless balcony window, anti-theft doors and windows, kitchen and bathroom components.
3, ceiling screw fixation.
Second, advantages
1, with wide applicability. As long as the thread size of the male thread part is consistent, it is suitable for any type of anchor head.
2. Selection of construction methods. Fixed-point presetting can be used as required, and drilling (loading) can also be carried out once, and its function and effect are completely consistent.
3. The construction success rate is high. There is no trouble of attaching depth to holes and inclining holes, and the construction success rate is 100%. ?
4. High-pitched design. Design of special hook for full-tooth taper expansion.
5. Locking and locking effect. Full-tooth taper expansion special design, using reverse thrust effect to lock the workpiece urgently. ?
6. Improve design thinking. Short and pithy, suitable for all commercially available screws, DIY and the most ideal building accessories for fortifications. ?
7. Ensure that the anchor bolt expands. Metal plate pressed products, patented full-tooth taper expansion design, strong grasping ability, no idling, no need for professional construction skills. ?
8. Disposal is not troublesome. As long as the anchor bolt workpiece is pulled out and the plane is repaired with filler, there is no trouble of disassembly and no danger of bump.
Refer to Baidu Encyclopedia-Expansion Screw