| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an oil filter capable of performing rotational operation without projecting from the top face of a filter case.SOLUTION: In an oil filter 1, a filter 3 is stored in a filter case 2, and a female screw part 5 for engine block attachment is formed at the central part of a bottom lid 4. A plurality of recess holes 8 to which a hook-like claw part 13 of a hook spanner 10 is engaged is formed in a circumferential direction at a predetermined pitch in a side wall outer peripheral part 2a of the filter case 2. The recess holes 8 can be formed in a boundary part of the side wall outer peripheral part 2a and top face 2b of the filter case 2.</p> |
