PRODUCT SPECIFICATIONSPart #: 0000-128134Fastener Type: Finished Hex NutSize Description: 1 1/4"-7Diameter/Nominal Size: 1 1/4"Thickness: 1 1/16" (1.138-1.206")Wrench Size/Across Flats: 1 7/8" (1.812-1.875")Width Across Corners: 2.066-2.165"Thread Pitch: 7Thread Pitch Type: CoarseThread Direction: RightSystem of Measurement: InchGrade: 5Material: Medium Carbon SteelFinish: Zinc PlatedDrive Type: External HexUsed with: Bolts/Screws up to Grade 5Average Piece Weight: 0.5430000 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.