Qualfast: 3/4" Hexagon Nut, UNF, Steel - BZP, Grade 5 - BS 1768 Bright zinc plated hex nuts. Typically fitted with a spanner or ratchet. MPN: 3/4" Hexagon Nut, UNF, Steel - BZP, Grade 5 - BS 1768 Attributes: Driving Features: Hexagon Grade: 5 Material: Steel Surface Treatment: Zinc Plated Thread: UNF Thread Direction: Right Thread Size: 3/4