Title:
DRILL SCREW FOR MATERIAL WITHOUT SPRINGBACK
Document Type and Number:
Japanese Patent JP2016136046
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a drill screw 1 capable of improving work efficiency for fastening work which does not require a hole for inserting a screw to be formed in a member to be fastened beforehand in fastening the member to be fastened made of non-metal materials such as wood, a woody material, and plastic to a material without springback such as ALC, and acquiring sufficiently high screw holding force.SOLUTION: A drill part 4 is provided to the tip of a shaft part 2 having a tapping screw part 5 in the outer periphery, and the maximum outer diameter dof the drill part 4 is equal to or smaller than the root diameter dof the tapping screw part 5.SELECTED DRAWING: Figure 1
Inventors:
FUKAZAWA KAZUO
Application Number:
JP2015011562A
Publication Date:
July 28, 2016
Filing Date:
January 23, 2015
Export Citation:
Assignee:
FUKASAWA:KK
International Classes:
F16B25/10; F16B25/04; F16B25/06; F16B33/02
Attorney, Agent or Firm:
Izumi Omori
Previous Patent: Front fork
Next Patent: STATIC PRESSURE FLUID BEARING DEVICE, AND SPINDLE DEVICE FOR MACHINE TOOL USING STATIC PRESSURE FLUI...
Next Patent: STATIC PRESSURE FLUID BEARING DEVICE, AND SPINDLE DEVICE FOR MACHINE TOOL USING STATIC PRESSURE FLUI...