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.

NoGo™ Enclosure Type 1

Product Details

Case Hardened Steel Zinc Plated (CR-3) Nogo™ (Type 1 for bolts and screws)

The Nogo™ is a 2-part enclosure offering the highest security for any nut or bolt.

This patented product doesn't require any specialist tools; you simply hammer the cap into the base making access to the enclosed nut or bolt near impossible.

  • Has been Home Office approved and has won the Sold Secure Silver Award
  • Stocked in Case Hardened Steel Zinc Plated (CR-3)

Security Rating Explained

Size Material Finish Part No. Small Box Qty
M6 Case Hardened Steel Zinc Plated (CR-3) NG06T1 1
M8 Case Hardened Steel Zinc Plated (CR-3) NG08T1 1
M10 Case Hardened Steel Zinc Plated (CR-3) NG10T1 1
M12 Case Hardened Steel Zinc Plated (CR-3) NG12T1 1


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