Title:
SCREW AND SCREWDRIVER BIT
Document Type and Number:
Japanese Patent JP2004197908
Kind Code:
A
Abstract:
To easily fit a screwdriver bit to a screw, and to prevent the dropping of the screw from the screwdriver bit.
A counter bored part 19 is formed on a hole 15 formed on a head part 13 of the screw 11, and a side face of the screwdriver bit 20 for fitting the screw 11, has an inclined part 24 kept into contact with an inlet end part 25 of the counter bored part 19.
Inventors:
AOYAMA SATOSHI
Application Number:
JP2002370217A
Publication Date:
July 15, 2004
Filing Date:
December 20, 2002
Export Citation:
Assignee:
OWARI PRECISE PRODUCTS CO LTD
International Classes:
B25B15/00; F16B23/00; (IPC1-7): F16B23/00; B25B15/00
Attorney, Agent or Firm:
Tsuyoshi Sato