| 摘要 |
PROBLEM TO BE SOLVED: To provide an impact tool which enables easy angle adjustment work of a bit fitting hole.SOLUTION: A concrete hammer 1 includes: a cylindrical barrel 31 housing a striking mechanism part 30 and including a front end side outer peripheral surface in which a male screw 33 is formed; and a tool holder 60 including a fitting hole 61 of a bit 71 and configured to threadedly engage with the male screw 33. A nut 37 for fixing the tool holder 60 to the barrel 31 at a predetermined engagement position is threadedly engaged with the male screw 33.SELECTED DRAWING: Figure 4 |
