| 摘要 |
PURPOSE:To endure a great tightening force of a tightening member by providing a contact face for stopping turning of a nut which is tightly engaged with a bolt. CONSTITUTION:A vertical plate-like stud 4 is formed between two bolt holes 3 at the bottom face of an opening 2 of a main body 10 and integrated with said main body 10 at the top face of the opening 2. The stud 4 is so disposed that its longitudinal center line is slant with respect to the longitudinal center line X-X of the main body 10. The both ends thereof have nut contact faces 41 and 42 which make contact with the bottom face of the opening and cross at a right angle with the center line of the main body 10. Wall faces which are contiguous with the longitudinal end parts of the opening 2 of the main body 10 have also nut contact faces 21 and 22 in such a relation that they make contact with the bottom faces thereof and cross at a right angle with the center line of the main body 10. |
