Qualfast: 5/8 UNF Locknut Nylon Insert NE BZP (5) Type NE MPN: 5/8 UNF Locknut Nylon Insert NE BZP (5) Attributes: Box Quantity: 10 Driving Features: Hexagon Grade: 5 Material: Steel Surface Treatment: Zinc Plated Thread: UNF Thread Direction: Right Thread Size: 5/8