Qualfast: 1/2 BSW Hex Machine Screw Nut Freecut Hexagon Machine Screw Nut BSW Steel - Grade P BS 1083 MPN: 1/2 BSW Hex Machine Screw Nut Freecut Attributes: Box Quantity: 100 Driving Features: Hexagon Grade: 6 Material: Steel Surface Treatment: Plain Thread: BSW Thread Direction: Right Thread Size: 1/2