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R25N Ground Engineering Tool Self Drilling Anchor Hex Nut
The Self Drilling Anchor (SDA) system is a bolting solution for difficult ground and rock conditions. The system enables drilling and grouting in one operation, making much saving in jobsite and project time. Which is comprised of a hollow threaded anchor bar with a sacrificial drill bit that performs drilling, anchoring and grouting in a single operation. Self drilling anchor system is mainly used in slope stabilization, tunneling pre-support, foundations with micro piles etc jobs, which is widely used in mining, tunneling, railway, metro construction etc projects.
Characteristic:
 1. Applying for both the domed plate and flat plate.
 2. All nuts exceed the ultimate strength of the self-drilling anchor bar.
 3. It can meet the stringent demands on anchor specification.
 4. Hot-dip galvanizing for corrosion protection.
Specification
Anchor Nut
| Model | R25N | 
| Key Size (mm) | 41 | 
| Length (mm) | 41 | 
| Hardness (HRC) | 20-30 | 
| Thread Type | R25 | 
| Raw Material | C45/40Cr | 
| Unit Weight (kg) | 0.25 | 
| Thread | R25 | 

Company Information:
      
The MIROC® Rock Drilling Tools product line by KSQ Technologies (Beijing) Co.Ltd. is the result of years of advanced engineering, precision manufacturing, and dedication to the use of high-quality materials.
MIROC® Rock Drilling Tools are used by many drilling professionals related to mining, construction, tunneling, and quarrying projects around the globe.
MIROC® Rock Drilling and Ground Support Tools include:
 Integral Rods
 Plug Hole Rods
 Tapered Drilling Tools
 Extension Drilling Tools
 Drifting and Tunneling Tools
 Reaming Tools
 Shank Rods
 Shank Adapters (Striking Bars)
 Down-the-hole (DTH) Bits
 Down-the-hole (DTH) Hammers
 PDC Bits
 Tricone Bits