Coal Mine Nut – Mushroom Head Domed Rock Bolt Nut for Mining & Tunnel Support
Our coal mine nut, also known as mushroom head domed anchor nut, is a heavy-duty fastener specially designed for underground coal mines, highway tunnels and slope stabilization rock bolting projects.
Manufactured from high-strength carbon steel by hot forging process, this domed rock bolt nut delivers excellent tensile strength and impact resistance. The unique mushroom spherical head design can evenly distribute pressure on the anchor plate, avoiding stress concentration during rock strata movement, greatly improving the stability of roadway support.
Key Features of Coal Mine Nut
- High Load Bearing Capacity Hot forged integral structure, suitable for PSB fine rebar rock bolts. Available in multiple strength grades to meet harsh underground mining working conditions.
- Spherical Dome Design The curved mushroom head can automatically adjust the angle, fit tightly with anchor bearing plate, prevent nut loosening under rock vibration.
- Durable Surface Treatment Black oxide finish to resist rust and abrasion in humid underground mine environments. Optional hot dip galvanizing for anti-corrosion requirements.
- Wide Size Range & Customization Common thread sizes fit R25, R32, R38, R51 rock bolts. We support custom dimensions, marking and packaging according to project drawings.
Application Scenarios
✅ Underground coal mine roadway support
✅ Mountain tunnel rock bolting
✅ Slope reinforcement engineering
✅ Hydropower underground cavern support
✅ Mining anchoring projects
Product Parameters
- Material: High strength carbon steel
- Process: Hot forging
- Surface: Black oxide / Hot galvanized
- Type: Mushroom head domed nut
- Standard: DIN74361, GB standard
- Matching bolt: Fine rebar rock bolt / Self-drilling anchor bolt
Why Choose Our Coal Mine Nut
We are a professional manufacturer of mining fasteners. All our coal mine anchor nuts are strictly inspected before shipment, stable mechanical performance, consistent thread tolerance. We provide bulk supply for mine contractors, tunnel engineering companies worldwide, support small trial orders and OEM service.
If you need technical datasheets or sample testing for your mining support project, please contact us for quotation.
Post time: 2026-10-14 09:47:25
