Security Ratings Explained
Security Ratings
Explained
X

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 2-Hole Self Tapper

Product Details

Countersunk A2 Stainless Steel 2-Hole Self Tapper

Popular aesthetically pleasing drive for any two-way application.

This drive system, sometimes known as Snake Eye®, or Pig Nose is designed for low to medium torque applications.
It has 2 holes drilled into the head which requires a unique 2-pin matching driver to install and remove it.

  • Full range of Self Tapping and Metric Machine Screws stocked in A2
    Stainless Steel
  • Other styles of fasteners available in the 2-Hole drive system: Barrel
    Nuts, Male Female Bolts, Grub Screws, Glass Screws, Large Disc Head
    Screws

Click to view technical data.?

Security Rating Explained

Diameter Length Material Driver Size Part No. Small Box Qty
No.4 (2.9mm) 3/8" (9.5mm) A2 Stainless Steel TH3 THCS04C 100
No.4 (2.9mm) 1/2" (13mm) A2 Stainless Steel TH3 THCS04D 100
No.4 (2.9mm) 3/4" (19mm) A2 Stainless Steel TH3 THCS04F 100
No.4 (2.9mm) 1" (25mm) A2 Stainless Steel TH3 THCS04G 100
No.4 (2.9mm) 1-1/4" (32mm) A2 Stainless Steel TH3 THCS04H 100
No.4 (2.9mm) 1-1/2" (38mm) A2 Stainless Steel TH3 THCS04I 100
No.6 (3.5mm) 3/8" (9.5mm) A2 Stainless Steel TH4 THCS06C 100
No.6 (3.5mm) 1/2" (13mm) A2 Stainless Steel TH4 THCS06D 100
No.6 (3.5mm) 5/8" (16mm) A2 Stainless Steel TH4 THCS06E 100
No.6 (3.5mm) 3/4" (19mm) A2 Stainless Steel TH4 THCS06F 100
No.6 (3.5mm) 1" (25mm) A2 Stainless Steel TH4 THCS06G 100
No.6 (3.5mm) 1-1/4" (32mm) A2 Stainless Steel TH4 THCS06H 100
No.6 (3.5mm) 1-1/2" (38mm) A2 Stainless Steel TH4 THCS06I 100
No.6 (3.5mm) 2" (50mm) A2 Stainless Steel TH4 THCS06J 100
No.8 (4.2mm) 3/8" (9.5mm) A2 Stainless Steel TH5 THCS08C 100
No.8 (4.2mm) 1/2" (13mm) A2 Stainless Steel TH5 THCS08D 100
No.8 (4.2mm) 5/8" (16mm) A2 Stainless Steel TH5 THCS08E 100
No.8 (4.2mm) 3/4" (19mm) A2 Stainless Steel TH5 THCS08F 100
No.8 (4.2mm) 1" (25mm) A2 Stainless Steel TH5 THCS08G 100
No.8 (4.2mm) 1-1/4" (32mm) A2 Stainless Steel TH5 THCS08H 100
No.8 (4.2mm) 1-1/2" (38mm) A2 Stainless Steel TH5 THCS08I 100
No.8 (4.2mm) 2" (50mm) A2 Stainless Steel TH5 THCS08J 100
No.10 (4.8mm) 1/2" (13mm) A2 Stainless Steel TH6 THCS10D 100
No.10 (4.8mm) 5/8" (16mm) A2 Stainless Steel TH6 THCS10E 100
No.10 (4.8mm) 3/4" (19mm) A2 Stainless Steel TH6 THCS10F 100
No.10 (4.8mm) 1" (25mm) A2 Stainless Steel TH6 THCS10G 100
No.10 (4.8mm) 1-1/4" (32mm) A2 Stainless Steel TH6 THCS10H 100
No.10 (4.8mm) 1-1/2" (38mm) A2 Stainless Steel TH6 THCS10I 100
No.10 (4.8mm) 2" (50mm) A2 Stainless Steel TH6 THCS10J 100
No.10 (4.8mm) 2-1/2" (63mm) A2 Stainless Steel TH6 THCS10K 100
No.12 (5.5mm) 1" (25mm) A2 Stainless Steel TH7 THCS12G 100
No.12 (5.5mm) 1-1/4" (32mm) A2 Stainless Steel TH7 THCS12H 100
No.12 (5.5mm) 1-1/2" (38mm) A2 Stainless Steel TH7 THCS12I 100
No.12 (5.5mm) 2" (50mm) A2 Stainless Steel TH7 THCS12J 100
No.14 (6.3mm) 5/8" (16mm) A2 Stainless Steel TH8 THCS14E 100
No.14 (6.3mm) 3/4" (19mm) A2 Stainless Steel TH8 THCS14F 100
No.14 (6.3mm) 1" (25mm) A2 Stainless Steel TH8 THCS14G 100
No.14 (6.3mm) 1-1/4" (32mm) A2 Stainless Steel TH8 THCS14H 100
No.14 (6.3mm) 1-1/2" (38mm) A2 Stainless Steel TH8 THCS14I 100
No.14 (6.3mm) 2" (50mm) A2 Stainless Steel TH8 THCS14J 100

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