PRODUCT SPECIFICATIONSPart #: 0000-133719Fastener Type: Finished Hex NutSize Description: 1 3/4"-5Diameter/Nominal Size: 1 3/4"Thickness: 1 1/2" (1.460-1.540")Wrench Size/Across Flats: 2 5/8" (2.538-2.625")Width Across Corners: 2.893-3.031"Thread Pitch: 5Thread 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: 2.0400000 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.