Origin: ImportedAlso know as a coach bolt or round head square neck bolt, carriage bolts are intended for use through iron strengthening plates on either side of a wooden beamIt is commonplace to use them into bare timberCarriage bolts have a squared section under their round head that grip to prevent rotationBody Diameter: 0.444 - 0.515 Inch Diameter: 1/2 Inch Finish: Plain Grade: F911 Head Diameter: 1.032 - 1.094 Inch Head Height: 0.250 - 0.270 Inch Head Height Max: .270 Head Style: Round Item: Shaker Screen Bolts Length: 1-1/2 Inch Material: Alloy Steel Measurement: Inch Origin: Imported Specification: ASME/ANSI B18.12 Square Depth: 0.250 - 0.281 Inch Square Width: 0.492 - 0.515 Inch Thread Length: 1-1/2 Inch Thread Type: Coarse Threads Per Inch: 13 Type: Full Threaded 
