Security Ratings Explained
Security Ratings

Hafren Security Ratings

Security Level 1

Entry Level
Fasteners offer protection from vandalism and opportunistic crime. Drivers can be purchased by the general public.

Security Level 2

Enhanced Security
Fasteners are less Common and less Recognizable. Driver Tooling is non-standard and Harder for the general public to buy.

Security Level 3

Medium Security
Rarer (less well-known) products. Supply of driver tooling is controlled, less readily available to buy, enhancing the security of the assembly.

Security Level 4

High Security
Either 1-way permanent fixing, or rare Hafren patented high security products requiring specialist tooling to remove (only available from Hafren approved distributors).

Security Level 5

Maximum Security
Highest security available. Products are either 1-way permanent fixings, or require bespoke exclusive, custom made driver tools to remove.

Stainless Steel Scroll™ Nut

Product Details

Stainless Steel Scroll™ Nut

High security removable nut with a unique 'Scroll' drive.

The rounded design of this nut gives no sharp angles to provide grip for normal hand tools. It can only be installed and removed using the matching Scroll™ driver socket. The patented Scroll™ design is interesting and pleasing to the eye.

  • Stocked in 303 S31 Stainless Steel
  • The smallest and largest security nut available from stock - M3 to M30
  • Scroll™ drive available to order in bolt form

Click to view technical data.



Security Rating Explained

Size Material Driver Size Part No. Small Box Qty
M3 303 S31 Stainless Steel SC34 SCN03 50
M4 303 S31 Stainless Steel SC34 SCN04 50
M5 303 S31 Stainless Steel SC5 SCN05 50
M6 303 S31 Stainless Steel SC6 SCN06 50
M8 303 S31 Stainless Steel SC8 SCN08 50
M10 303 S31 Stainless Steel SC10 SCN10 50
M12 303 S31 Stainless Steel SC12 SCN12 50
M16 303 S31 Stainless Steel SC16 SCN16 50
M20 303 S31 Stainless Steel SC20 SCN20 50
M24 303 S31 Stainless Steel SC24 SCN24 50
M30 303 S31 Stainless Steel SC30 SCN30 50


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