Description:Made of 304 Stainless Steel,good rust resistance.Self-locking serrated flange digs into the material being fastened to help prevent loosening.Flanged Nylon Locking Nuts (also called Nyloc Nuts) are fitted with a polymer insert. The elastic Nylon insert of this component fits tightly against the fastener, and is designed to resist loosening. An integrated flange provides this nut with greater load-bearing capabilities. .
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