| 摘要 |
A blind bolt and a blind nut which can reduce the number of components and production costs, require no support shaft penetrating therethrough, roratably support a locking piece and a nut thereof having a remarkably readily-processible structure, and support them against failure to obtain a higher fastening strength. The blind bolt includes a bolt main body 2 having an oblong hole 22. and a locking piece 3 rotatably supported within said oblong hole 22. The locking piece 3 is provided with a pair of rotary protrusions 35 and a pair of piece holding protrusions 36, projecting outwardly, respcetively. Said oblong hole 22 includes a pair of rotation supporting grooves 27 to accommodate said rotary protrusions 35 and support rotary motion, and a pair of piece, holding grooves 28 to accomodate said piece holding protrusions 36.
|
