Cap 4mm Screw Cap & Washer, White Plastic | 4Boats

White plastic screw cap with matching washer to protect and finish exposed screw heads in marine environments.

• Protects screw head from moisture and abrasion
• Matching washer spreads load to reduce pull-through
• Fits 4 mm (M4; ≈0.16 in) screws
• White finish blends with light‑coloured surfaces
• Plastic - lightweight and corrosion‑resistant
• Suitable for decks, hatches and other exposed fittings

Simple, neat finishing for exposed fasteners on boats and marine equipment.