Title:
WASHER-EQUIPPED SCREW
Document Type and Number:
WIPO Patent Application WO/2016/067451
Kind Code:
A1
Abstract:
A washer-equipped screw (1) is provided with a screw (10) and a washer (20) that does not come off the screw (10). The screw (10) is provided with: a shank (13) having a male thread (14); and a head (11) having a diameter greater than the diameter of the shank (13). The washer (20) is provided with a washer body (21); a hole (22) formed to have a diameter greater than the outer diameter of the male thread (14); and a plurality of protrusions (23) having dimensions that cause the protrusions (23) to interfere with the male thread (14). The thickness of the protrusions (23) is less than that of the washer body (21).
Inventors:
ADACHI RYOUSUKE (JP)
Application Number:
PCT/JP2014/079068
Publication Date:
May 06, 2016
Filing Date:
October 31, 2014
Export Citation:
Assignee:
NITTO SEIKO KK (JP)
International Classes:
F16B43/00
Foreign References:
| JPS54133263U | 1979-09-14 | |||
| JPS5660812U | 1981-05-23 |
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