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Title:
FASTENER
Document Type and Number:
Japanese Patent JP2016136050
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To reduce a fastening work to improve construction efficiency, and improve fastening force to prevent looseness.SOLUTION: A fastener 10 includes: a bolt 1 having a pitch larger than a metric coarse screw thread; a nut 2 screwed into the bolt, and fastening a fastened member M; and an elastically deformable metal washer 3 inserted between a head part 12 of the bolt or the nut and the fastened member. The metal washer has a front face part 31 comprising a plurality of planes 31a, 31b, and a rear face part 32 having planes 32a, 32b parallel to the respective planes of the front face part.SELECTED DRAWING: Figure 1

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Inventors:
TSURUMI AKITOSHI
ASAI NOBUHIDE
KAMAZAKI YUJI
OKI KAZUYOSHI
Application Number:
JP2015011612A
Publication Date:
July 28, 2016
Filing Date:
January 23, 2015
Export Citation:
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Assignee:
JFE METAL PRODUCTS & ENG INC
International Classes:
F16B31/02; F16B5/02; F16B39/24; F16B43/00
Domestic Patent References:
JPS6067415U1985-05-13
JP2011220387A2011-11-04
JP2012511671A2012-05-24
JPH11111260A1999-04-23
JP2005062438A2005-03-10
JP2006017310A2006-01-19
JP2008281127A2008-11-20
Attorney, Agent or Firm:
Einzel Felix-Reinhard
Ueshima



 
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