290-Piece Hex Nut & Bolt Protective Cap Cover Set M5–M10
290-Piece Hex Nut & Bolt Protective Cap Cover Set M5–M10
290-Piece Plastic Hex Nut & Bolt Protective Cap Cover Set
Keep exposed bolts, screws, and hex nuts tidy, safe, and corrosion-resistant with this comprehensive 290-piece dome nut cover set. Ideal for automotive, construction, furniture assembly, DIY projects, and workshop use, these black plastic caps snap securely over hexagonal fasteners to shield threads from moisture, dust, and physical contact — extending the life of your hardware and giving any installation a clean, professional finish.
Key Features
- 290-Piece Assorted Set: Covers a wide range of fastener sizes in one convenient kit — no more hunting for the right cap.
- Durable Plastic Construction: Made from high-quality plastic material built to withstand everyday wear, moisture, and environmental exposure.
- Secure Dome Fit: Each cap snaps firmly over hexagonal nuts and bolt heads, staying in place once applied.
- Versatile Size Range: Includes caps for M5, M6, M8, M10, and other common metric sizes — suitable for a broad array of projects.
- Organized Storage Box: The entire set comes in a compact, compartmentalized storage box (19.5 × 14 × 3.6 cm), making it easy to sort, store, and carry.
- Clean Aesthetic Finish: Classic matte black color blends discreetly with most hardware, machinery, and finished surfaces.
Package Contents
- 30 × Dome Nut Covers (Large)
- 40 × M10 Dome Nut Covers
- 20 × M8 Dome Nut Covers
- 40 × M6 Dome Nut Covers
- 60 × M5 Dome Nut Covers
- 100 × Dome Nut Covers (Standard)
- 1 × Compartmentalized Storage Box
Specifications
| Material | Plastic |
| Color | Black |
| Total Pieces | 290 |
| Compatible Sizes | M5, M6, M8, M10 and more |
| Box Dimensions | 19.5 × 14 × 3.6 cm |
| Country of Origin | Made in China |
Where to Use
These versatile nut and bolt covers are perfect for a wide range of applications including automotive assembly, bicycle frames, metal shelving, outdoor furniture, industrial machinery guards, marine fittings, and general home improvement or workshop projects. Anywhere you have an exposed fastener, these caps provide a neat, protective solution.
For more on fastener safety standards and hardware best practices, visit the U.S. Consumer Product Safety Commission (CPSC).
Frequently Asked Questions
Q: What metric bolt and nut sizes do these protective caps fit?
A: This 290-piece set includes dome nut covers compatible with M5, M6, M8, and M10 metric hex nuts and bolt heads, along with additional caps for other standard sizes. The assorted variety means you'll have the right cover for most common metric fasteners used in home improvement, automotive, and industrial projects.
Q: Are these hex nut covers suitable for outdoor use?
A: Yes. The plastic dome covers are designed to resist moisture and environmental exposure, making them suitable for both indoor and outdoor applications — including garden furniture, automotive fittings, and metal structures where protecting fasteners from the elements is important.
Q: How do the bolt cap covers stay in place?
A: Each dome cover is designed with a snug, press-fit interior that grips securely around the hexagonal profile of standard metric nuts and bolt heads. Once pushed into place, they stay firmly seated under normal conditions without adhesive.
Q: Does the set come with storage?
A: Yes — the full 290-piece set arrives neatly organized in a compact compartmentalized storage box measuring 19.5 × 14 × 3.6 cm, making it easy to keep caps sorted by size and ready for use on your next project.