| 摘要 |
A hold down incorporating a mounting plate configured with a downwardly opening recess and an elevated retainer collar configured with an aperture. A swivel is configured with an enlarged-in-diameter retainer head received in such recess and an upwardly projecting pivot shank configured with a cross bore which receives a circular retainer ring having an outside diameter larger than such aperture so that such ring and the retainer head cooperate to positively lock the swivel to the mounting plate.
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