Qualfast: 1/2 BSW Steel Hex Full Nut BZP BSW. Zinc-Plated. Conform to BS 1083. Grade A. MPN: 1/2 BSW Steel Hex Full Nut BZP Attributes: Box Quantity: 100 Driving Features: Hexagon Grade: A Material: Steel Surface Treatment: Zinc Plated Thread: BSW Thread Direction: Right Thread Size: 1/2