63# Thumb Nuts Plastic Rubber Head Nut. Customizable Head Style: Head style is fully customizable to meet specific design requirements. Color Customization: Available in black with colorable options for various color preferences. Size Customization: Sizes are customizable to fit different application needs. Diverse Material Options: Constructed from PP, ABS, PA, iron plated with white zinc, or SUS304. OEM and ODM Services: Full customization, minor customization, and flexible customization available. Fast Delivery Time: Estimated delivery time is 7 days for standard orders. Hand-Tightening Design: Tool-free hand-tightening screws for convenient and quick hardware installation. Comprehensive Size Range: Available in metric and imperial systems from 10# to 40# or above.