Prevent unloading theftproof bolt
The utility model discloses a prevent unloading theftproof bolt, including bolt head, ring flange, polished rod and screw rod, the ring flange is located between bolt head and the polished rod, is equipped with an axial cotter way on the screw rod, the polished rod lower extreme is equipped with an...
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Format: | Patent |
Sprache: | chi ; eng |
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Online-Zugang: | Volltext bestellen |
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