PRODUCT SPECIFICATIONSPart #: 0000-130681Fastener Type: Finished Hex NutSize Description: 1 1/2"-6Diameter/Nominal Size: 1 1/2"Thickness: 1 9/32" (1.245-1.317")Wrench Size/Across Flats: 2.25" (2.175-2.25")Width Across Corners: 2.480-2.598"Thread Pitch: 6Thread 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: 0.9430000 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.