Hafren KMRN-GEO Case Hardened Steel Geomet ® Kinmar ® Removable Nuts
Product overview
Hafren KMRN-GEO Case Hardened Steel Geomet ® Kinmar ® Removable Nuts
Hafren KMRN-GEO Case Hardened Steel Geomet ® Kinmar ® Removable Nuts are the ultimate high-security patented two-way nuts designed for applications where secure removal is required. This advanced Hafren KMRN-GEO design requires a matching driver socket for both installation and removal, providing a precise, torque-controlled fit while maintaining exceptional resistance to tampering or forced attack. The Geomet ® coating offers outstanding corrosion protection and a clean, professional finish ideal for both indoor and outdoor high-security applications.
- Also stocked in: Zinc Plated (CR-3) and A2 Stainless Steel
- Other materials and finishes available to order, subject to minimum order quantities
Part Numbers: KMRN06-GEO, KMRN08-GEO, KMRN10-GEO, KMRN12-GEO.
Hafren KMRN-GEO – Features
Material: Case Hardened Steel (C10C interannealed)
Heat Treatment: Case Hardened
Finish: Geomet® 500B
Part Numbers & Driver Sizes
| Size | Nut Part No | Driver Part No |
| M6 | KMRN06-GEO | KM06R |
| M8 | KMRN08-GEO | KM08R |
| M10 | KMRN10-GEO | KM10R |
| M12 | KMRN12-GEO | KM12R |
Hafren Security Fasteners
Hafren Fasteners manufacture and supply security & tamper resistant fasteners; special headed screws, nuts & bolts. Their solutions are either permanent, or removable only by using a matching driver tool. They design and supply a wide range of security fasteners including bespoke made to measure security fasteners. If they don’t have what you need they’ll make it just the way you want.
Security: The need to safeguard against theft and vandalism is increasingly an essential part of many design specifications.
Safety: Complying with stringent Health & Safety Law, their fasteners keep the public safe.
Aesthetics: Security fasteners are not only secure and vandal-resistant, but aesthetically pleasing to the eye complementing their surrounding environment
For Additional Information on Hafren KMRN-GEO Case Hardened Steel Geomet ® Kinmar ® Removable Nuts, please consult the Technical Data Table or PDF Files below.
*Technical Data subject to change without notice.
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+44 (0)1744 762 929Technical Data
| Part Number | Size | Driver Part Number | Width (A) | Height (B) | Box Quantity |
| KMRN06-GEO | M6 | KM06R | 12.1 mm | 5.6 mm | 100 |
| KMRN08-GEO | M8 | KM08R | 16.1 mm | 7.3 mm | 100 |
| KMRN10-GEO | M10 | KM10R | 20.1 mm | 9.2 mm | 100 |
| KMRN12-GEO | M12 | KM12R | 24.2 mm | 10.6 mm | 100 |