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.

Raised Countersunk Pin Hex Machine Screw

Product Details

Raised Countersunk A2 Stainless Steel Pin Hex Machine Screw

Hexagon socket screws manufactured with an internal pin.

This drive prevents removal with standard hexagon tools. Suitable for medium torque applications and is one the most difficult to remove without the matching driver.

  • Full range of AB Self Tapping and Metric Machine Screws stocked in A2 Stainless Steel
  • Other styles of fasteners in the Pin Hex drive system: Socket Cap screws, Grub screws and Barrel Nuts

Click to view technical data.


Security Rating Explained

Size Length Material Driver Size Part No. Small Box Qty
M3.5 12mm A2 Stainless Steel H30 PHRM3512 100
M3.5 20mm A2 Stainless Steel H30 PHRM3520 100
M3.5 25mm A2 Stainless Steel H30 PHRM3525 100
M3.5 30mm A2 Stainless Steel H30 PHRM3530 100
M3.5 40mm A2 Stainless Steel H30 PHRM3540 100
M3.5 50mm A2 Stainless Steel H30 PHRM3550 100
M3.5 60mm A2 Stainless Steel H30 PHRM3560 100


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