Hardware accessory that keeps bolt and nut heads tidy and protected, promising a neat, secure finish. Designed for DIYers and maintenance teams who want reliable weather protection, Generic Plastic Dome Bolt Nut Protection Caps. Are these caps the practical choice for long-term indoor and outdoor projects?
⚡ At a Glance
- • Weather resistance: Durable LDPE resists moisture and weathering, suitable for outdoor use
- • Best for: DIYers, maintenance teams and tradespeople needing neat bolt protection
- • Not ideal for: Applications that require a load-bearing or locking fastener
Made from low-density polyethylene for flexible, protective coverage. Available in metric sizes M4–M20 with multiple pack quantities for projects of any scale.
Secure grip on bolt heads - with flexible LDPE construction
Low-density polyethylene is slightly elastic, allowing caps to stretch over threads and conform to bolt and nut heads. Push-on installation secures caps, and soaking in hot water softens the material for an easier fit.
Precise ISO-fit for common sizes such as M12 reduces movement and rattling, keeping fittings neat and protected.
Weather protection for outdoor fittings - thanks to LDPE construction
LDPE resists moisture and general weathering, a property noted in user feedback describing reliable outdoor performance. The dome shape sheds water and covers exposed metal surfaces.
Helps prevent surface corrosion and maintains a tidy appearance on exterior installations over time.
Plenty of spares for jobs large and small - with multiple pack sizes available
Manufacturer lists pack counts from small sets up to bulk quantities, and sizes cover the common metric range M4–M20. Packs are useful for matching caps to different bolt sizes across a site.
Convenient for maintenance rounds and larger projects, ensuring matching caps are always on hand and reducing downtime.
✨ The 4 Key Reasons for Generic Plastic Dome Bolt Nut Protection Caps
LDPE material - Flexible grip that resists moisture and general weathering
Push-on installation - Simple fitting saves time on every cap applied
Wide size range - Covers metric bolts from M4 up to M20 sizes
Bulk pack options - Available quantities suit single jobs to long-term maintenance
📋 Technical Details at a Glance
- Category: BISS
- Brand: Generic
- Material: Polyethylene Low Density (LDPE)
- Colour: Black
- Sizes Available: M4, M5, M6, M8, M10, M12, M14, M16, M18, M20
❓ Frequently Asked Questions
Q: Are these caps weather-resistant?
A: User reviews report weather-resistant performance, making caps suitable for both indoor and outdoor use.
Q: How do I fit the caps?
A: Push caps onto the bolt or nut head, or soak in hot water to soften the material for an easier fit.
Q: Which sizes do they fit?
A: Available sizes cover metric bolts M4 through M20, with M12 specifically confirmed as a precise ISO-fit in user feedback.
🏆 Our Verdict
Ideal for DIYers, maintenance teams and tradespeople who need straightforward protection for exposed fasteners. Durable LDPE construction, easy push-on installation and a wide range of sizes and pack quantities make upkeep quick and consistent. Offers good long-term value through weather resistance and plentiful spares for recurring maintenance.
