Balax Thredfloer Thread Size (Inch) 1/2-13 Thread Standard UNC Chamfer Plug Chamfered Threads 4P Material High-Speed Steel Coating/Finish Bright/Uncoated Coolant Through No Class Of Fit 2B Thread Limit H10 Overall Length (Inch) 3-3/8 Overall Length (Decimal Inch) 3.3750 Thread Direction Right Hand Thread Length (Inch) 1 Thread Length (Decimal Inch) 1.0000 Shank Diameter (Decimal Inch) 0.3670 Application Through-Hole Threading Series BXP Square Size (Decimal Inch) 0.2750 Oil Grooves 1