Title:
DRILL MACHINE SCREW AND SASH FRAME FIXING STRUCTURE
Document Type and Number:
Japanese Patent JP2017067179
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a drill machine screw capable of reducing tip breakage, low in driving resistance and capable of improving drill performance, compared to a drill machine screw subjected to passivation (trade name).SOLUTION: A drill machine screw of this invention is a drill machine screw 1 in which a friction reduction film with a metal flake is formed in at least a drill part 21 and which comprises stainless steel. The drill machine screw 1 has a drill angle of 95-120°, and the length of the drill part 21 is equal to or larger than 1.5 times of a drill diameter.SELECTED DRAWING: Figure 1
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Inventors:
MORII MASATO
OMUKAI KAZUYA
OMUKAI KAZUYA
Application Number:
JP2015193637A
Publication Date:
April 06, 2017
Filing Date:
September 30, 2015
Export Citation:
Assignee:
DAIWA HOUSE IND
KOKUBU:KK
KOKUBU:KK
International Classes:
F16B33/06; F16B5/02; F16B25/00; F16B25/10
Domestic Patent References:
| JPH11131662A | 1999-05-18 | |||
| JPH03149406A | 1991-06-26 | |||
| JPH1047324A | 1998-02-17 | |||
| JP2015007475A | 2015-01-15 | |||
| JPS5845604B2 | 1983-10-11 |
Attorney, Agent or Firm:
Taizo Jimbo
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