Security Ratings Explained
Security Ratings
Explained
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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.

Countersunk Clutch Head Woodscrew

Product Details

Countersunk Steel Zinc Plated (CR-3) Clutch Head Woodscrew

The original one-way security drive.

The special ridged design of this drive means that it can only operate in a clockwise motion. Installed using standard slotted screwdriver - no specialist tools required.

  • Also Stocked in; A2 Stainless Steel Self Tapping Screws & A2 Stainless Steel Metric Machine Screws

Click to view technical data.

 

Security Rating Explained

Diameter Length Material Finish Part No. Small Box Qty
No.6 (3.5mm) 3/4" (19mm) Case Hardened Steel Zinc Plated CHCW06F 200
No.6 (3.5mm) 1" (25mm) Case Hardened Steel Zinc Plated CHCW06G 200
No.8 (4.2mm) 3/4" (19mm) Case Hardened Steel Zinc Plated CHCW08F 200
No.8 (4.2mm) 1" (25mm) Case Hardened Steel Zinc Plated CHCW08G 200
No.8 (4.2mm) 1-1/4" (32mm) Case Hardened Steel Zinc Plated CHCW08H 200
No.8 (4.2mm) 1-1/2" (38mm) Case Hardened Steel Zinc Plated CHCW08I 200
No.8 (4.2mm) 2" (50mm) Case Hardened Steel Zinc Plated CHCW08J 200
No.10 (4.8mm) 1" (25mm) Case Hardened Steel Zinc Plated CHCW10G 200
No.10 (4.8mm) 1-1/4" (32mm) Case Hardened Steel Zinc Plated CHCW10H 200
No.10 (4.8mm) 1-1/2" (38mm) Case Hardened Steel Zinc Plated CHCW10I 200
No.10 (4.8mm) 2" (50mm) Case Hardened Steel Zinc Plated CHCW10J 200
No.12 (5.5mm) 1-1/2" (38mm) Case Hardened Steel Zinc Plated CHCW12I 200
No.12 (5.5mm) 2" (50mm) Case Hardened Steel Zinc Plated CHCW12J 200
No.12 (5.5mm) 2-1/2" (63mm) Case Hardened Steel Zinc Plated CHCW12K 200
No.12 (5.5mm) 3" (75mm) Case Hardened Steel Zinc Plated CHCW12L 200

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