Stainless self-tapping screw
OwnerTo-Ha Loi, Tran-Tu Loiinventors
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Abstract
A stainless self-tapping screw comprises a screw rod made of stainless material; a rear end of the screw rod having an integral formed head and a front end thereof having a polygonal buckling groove; a cutting unit made of a hard material. A front end of the cutting unit having a cutting end and a rear end having an integral formed with a buckling post which is insertable into the buckling groove at a front end of the screw rod. In operation, the cutting unit inserted at a front end of the screw rod serves to drill a hole; then the screw rod is screwed into an metal object; the cutting unit can be taken down as the stainless self-tapping screw is screwed into the metal object.
Claims3
A stainless self-tapping screw comprising:
- a screw rod made of stainless material;
- a rear end of the screw rod having an integral formed head and a front end thereof having a polygonal buckling groove;
- a cutting unit made of a hard material;
- a front end of the cutting unit having a cutting end and a rear end having an integral formed with a buckling post which is insertable into the buckling groove at a front end of the screw rod;
- wherein in operation, the cutting unit inserted at a front end of the screw rod serves to drill a hole;
- then the screw rod is screwed into an metal object;
- the cutting unit can be taken down as the stainless self-tapping screw is screwed into the metal object.
Dependencies are inferred from the claim text.