| 摘要 |
PROBLEM TO BE SOLVED: To provide a break nut for allowing easy management of nut fastening torque without using a torque wrench. SOLUTION: The break nut comprises a nut, and a guide provided on the concentric outer periphery of the nut via a connection portion. When nut fastening torque reaches a predetermined torque, the connection portion is broken and the guide is separated from the nut. The outer periphery of the guide is in an angular shape. COPYRIGHT: (C)2007,JPO&INPIT
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