| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a header with which it can be easily and surely known whether screwing work of a box nut of a pipe joint and an external thread of a header main body is surely done or not. <P>SOLUTION: The header is provided with a locking member Z automatically locking the box nut 15 from a radial direction outside under a final regular fastening condition with screwing in an axial center L9 direction of an external part. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
