| 摘要 |
<p>A method for manufacturing self -locking nipples comprising the steps of providing a semi - finished nipple (10) with an enlarged head (5) in comparison with the shank (6), providing at least a first blind hole (11, 11a) in that head, injecting a fluid resin into the hole (11, 11a) and solidifying so as to obtain a corresponding insert (9, 9a), making a second axial hole (7) in the semi - finished product at least partly intersecting the said insert (9, 9a).</p> |
