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Briefly describe what is screw casing
The screw sleeve includes a flange and a shank extending from the flange. The handle is provided with flexible legs that extend from the end of the handle toward the flange and extend outward from the handle. The shank has a screw insertion hole screwed into it to prevent the leg from bending radially inward toward the shank, so that the screw sleeve is fixed to the workpiece by means of the leg and the flange. (Guide: Introduction to the process principle and process flow of chemical anchor bolts)
The inside of the leg is provided with a threaded part tapped by a self-tapping screw. The flange is combined with a tubular clamping torque receiving part that extends in the direction opposite to the shank. The clamping torque receiving part is formed with a screw insertion hole having a diameter smaller than the outer diameter of the self-tapping screw, so as to receive the self-tapping screw.
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