| 摘要 |
The present invention, a nut and connection, is used for a reinforcement tool or the like, of the connection between one beam and other beam in a wooden house, the nut of the present invention capable of locating to a tightening portion with a push-in condition; capable of tightening with a little working; and capable of maintaining the tightening condition even if the size of the tightening portion become small one.
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