| 1 | This old nut won't bite [grip]. | |
| 2 | It doesn't matter; only a nut started. | |
| 3 | The vibration during operation often caused the nuts to loosen. | |
| 4 | Because there is no abrasion between the concave and convex, the nut is reusable. | |
| 5 | Hard Lock Nuts have been proven effective in a variety of tests. |
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