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TAPER PIECE, THREAD FASTENING CONSTRUCTION USING TAPER PIECE WITH FEMALE THREAD, FORMED DRILL FOR PROCESSING INSERTION HOLE FOR TAPER PIECE, AND HAMMER FOR DRIVING OF TAPER PIECE
TAPER PIECE, THREAD FASTENING CONSTRUCTION USING TAPER PIECE WITH FEMALE THREAD, FORMED DRILL FOR PROCESSING INSERTION HOLE FOR TAPER PIECE, AND HAMMER FOR DRIVING OF TAPER PIECE
A taper piece having a good operability, a thread fastening construction using a taper piece with a female thread, a formed drill for processing an insertion hole for the taper piece, and a hammer for driving of the taper top. A taper piece (1) of the invention comprises a tapered portion (101), an external surface of which is frustum-shaped, a flange portion (102) formed on the terminal end of an enlarged side of the tapered portion (101) to extend beyond the tapered portion (101) and having a flat surface perpendicular to an axial direction of the tapered portion (101), and a female thread (104) constituting an extension extending in the axial direction of the tapered position (101). The taper piece (1) is driven into a hole (3), of which a hole tapered portion (301) and a hole stepped portion (302) are worked at a time, to make a member being clamped in a thread fastening construction.
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