Anti-theft screw with concave-convex surface on screw hole top in heat treatment stiffening screw top
A technology of screws and internal screw holes, applied in nuts, bolts, machinery and equipment, etc., can solve the problems of theft and sale of easily stolen facilities, lack of easy installation and disassembly of anti-theft screws, etc., and achieves the effects of reliable anti-theft, simple structure and obvious social benefits.
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[0020] The present invention will be further described below in conjunction with the accompanying drawings.
[0021] exist figure 1 Heat treatment quenching and hardening anti-theft screw body 1 is respectively provided with a screw top 2, screw rod 3, screw top surface 4, screw top bottom surface 5, screw top outer peripheral wall 6, screw nail Concave hole on the top and top surface 7, the bottom of the concave hole on the top of the screw 8, the wall of the concave hole on the top of the screw 9, the concave hole wall on the top of the screw is screwed into the right-handed thread clockwise 10, the screw rod is rotated clockwise Enter the right-handed thread 13 and the bottom surface 33 of the screw rod end, the screw top surface 4 is provided with the screw top surface clockwise screwed into the convex high type right-handed top resisting gear 34, the screw top The face clockwise is screwed into the convex height type right-handed top to resist the file 34 on the right si...
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