5/16"-18 Zinc Plated Steel Coarse Thread Square Nuts

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Diameter: 5/16"Thickness: 17/64"Material: SteelFinish: ZincDriver Type: 9/16" WrenchThread Size: 18 (Coarse)Type: Square NutBox of 20.A square nut is a four-sided nut. Compared to standard hex nuts, square nuts have a greater surface in contact with the part being fastened, and therefore provide greater resistance to loosening (though also greater resistance to tightening). Square nuts are typically mated with square-headed bolts. Show more