Qualfast: 5/8 BSW Hex Machine Screw Nut Freecut Hexagon Machine Screw Nut BSW Steel - Grade P BS 1083 MPN: 5/8 BSW Hex Machine Screw Nut Freecut Attributes: Box Quantity: 50 Driving Features: Hexagon Grade: 6 Material: Steel Surface Treatment: Plain Thread: BSW Thread Direction: Right Thread Size: 5/8