Protective Caps For Bolts
Seized, rusty bolts can turn a routine maintenance task into a hours-long struggle, which is why our Protective Caps for Bolts are an essential upgrade. These Protective Caps for Bolts are designed to completely seal off exposed nuts and threads from acidic mining water, dust, and slurry. By using our Protective Caps for Bolts, you ensure that hardware stays in pristine condition, allowing for fast removal by hand even years after installation. Our caps also provide secondary vibration damping, helping to prevent fasteners from backing out under intense machine vibration.
At our Yangzhou factory, we add high-performance anti-aging agents to our Protective Caps for Bolts, ensuring they don't crack after 500 hours of UV and salt spray testing. With a precision internal thread that fits M6 to M30 standards, these caps stay snugly in place through wind, rain, and grit. They are the most cost-effective way to preserve your capital equipment investment and are trusted by professionals in the chemical, coal, and mining sectors.
Applications
Anti-rust and anti-corrosion for bolts on mining screens and flotation cells.
Thread protection in chemical and corrosive outdoor environments.
Auxiliary locking for fasteners in high-vibration machinery.
Customization & Quality
We support full OEM/ODM customization for colors and specific sizes. We are ISO 9001 certified and perform 100% inspection before shipping.
Packaging & Shipping
Categorized by size and packed in plywood crates. We support global DDP shipping for convenience.
Parameter Table
| Abrasive Loss | ≤ 42mm³ (DIN 53516) |
| Hardness | 80A – 90A (High-resilience grade) |
| Aging Resistance | 500h UV/Salt spray test certified |
| Bolt Size | M6 – M30 (Standard and Custom) |
| Temperature Range | -40°C to 100°C |
FAQ
Q: Do I need tools to install?
A: No, hand-tightening is sufficient.
Q: Can I reuse them?
A: Yes, they are designed to be unscrewed and reused multiple times.
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