5/16"-18 x 9/16" Zinc Plated Steel Coarse Thread Hex Jam Nuts

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Diameter: 5/16"Diameter 2: 9/16"Thickness: 3/16"Material: SteelFinish: ZincDriver Type: 1/2" WrenchThread Size: 18 (Coarse)Shape: Jam NutType: Jam NutA jam nut is a low profile typ e of nut, typically half as tall as a standard nut. It is commonly used as a type of locknut, where it is "jammed" up against a standard nut to lock the two in place. It is also used in situations where a standard nut would not fit. Show more