PRODUCT SPECIFICATIONSPart #: 0000-124298Fastener Type: Heavy Hex Jam NutSize Description: 1"-8Diameter/Nominal Size: 1"Thickness: 35/64" (0.519"-0.575")Wrench Size/Across Flats: 1 5/8" (1.575-1.625")Width Across Corners: 1.796"-1.876"Thread Pitch: 8Thread Pitch Type: CoarseThread Direction: RightSystem of Measurement: InchGrade: A (2)Material: Low Carbon SteelFinish: Zinc PlatedDrive Type: External HexStandards Met: A563Used with: Bolts/Screws up to Grade 5Average Piece Weight: 0.2442700 lbs.Nuts are almost always used in conjunction with a mating bolt to fasten multiple parts together; kept together by a combination of their threads' friction, a slight stretching of the bolt, and compression of the parts to be held together.