A Bolt Lock Nut 19 No. 5.5" is a durable fastener designed to secure bolts and prevent them from loosening due to vibration or movement. It has a thread size of 19 No. and fits 5.5-inch bolts. These lock nuts are widely used in heavy machinery, agricultural tools, vehicles, and construction projects. They often feature a nylon insert (nyloc) or a deformed thread design, adding extra friction to ensure a firm and stable connection under pressure.
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