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Countersunk head T-30

Countersunk head T-30

Countersunk flat head of concrete screw
Joker concrete screw
Flat head with seismic certified
Flat countersunk head concrete screw anchor
Countersunk flat head of concrete screw
Countersunk flat head of concrete screw
Joker concrete screw
Flat head with seismic certified
Flat countersunk head concrete screw anchor
Countersunk flat head of concrete screw
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ETA certified F120 fire resistance seismic C1 and C2 ISO-9001

 

JOKER’s flat countersunk head screws with 6mm, 8mm, and 10mm drill diameters and Torx drive are medium to heavy-duty frame concrete screws, widely used for window and door frame fixing with a flush finish. These screws are heavily utilized for securing pool fence spigots, timber battens, or any other fixture requiring a flush countersunk finish.

The screws are available in three coating options: zinc plated, silver Ruspert coating with 1000 hours of salt spray test, and Mechanical Galvanizing coating with up to 3000 hours of corrosion resistance, ensuring long-lasting protection in your projects.

Additionally, this product is ETA certified, with seismic resistance C1/C2 certification and fire resistance F120 rating, guaranteeing exceptional performance under extreme conditions, making it ideal for demanding applications.

SIZE
Embedment depth (mm)
DRILL HOLE DIAMETER (mm)
7.5X42
40
6
7.5X52
40
6
7.5X72
40 / 55
6
7.5X92
40 / 55
6
7.5X102
40 / 55
6
7.5X112
40 / 55
6
7.5X132
40 / 55
6
7.5X152
40 / 55
6
10.5X65
50 / 60
8
10.5X75
50 / 60
8
10.5X90
50 / 60
8
12.5X70
60 / 70
10
12.5X80
60 / 70
10
12.5X100
60 / 70 / 85
10

SIZE
THREAD LENGTH (mm)
DRILL HOLE DIAMETER (mm)
7.5X42
32
6
7.5X52
42
6
7.5X72
62
6
7.5X92
82
6
7.5X102
92
6
7.5X112
102
6
7.5X132
122
6
7.5X152
142
6
  • The 6 mm diameter concrete screw with an ETA 14/0374 assessment and ETA 21/0177 the redundant non-structural systems performance category for additional safety standards.
  • The design of the concrete screw with hi-low triple thread offers maximum performance when mounting in window or door frame elements and small edge and spacing distance
  • The Joker concrete screw 6mm drill diameter offers the possibility for use in prestressed hollow core slabs, it is an ideal for overhead installation, greatly simplifies the work.
  • The ETA approval of concrete screw allows adjustment and easy to fully remove
  • Different approved embedment depths allow the screws to be used in a wide range of applications, ensuring excellent flexibility.
  • Fire resistance class F120
  • Down pool fence spigots
  • Timber battens
  • Consoles/Base plates
  • Rails
  • Reinforcement of bridges

 

Building materials

  • Concrete C20/25 to C50/60, cracked and non-cracked
  • Prestressed hollow core concrete slabs, strength C30/37
  • Stone
  • Brick
  • Masonry
  • Solid

How to installation 

  1. Drill a hole in the base material, the hole should be drilled deeper than the screw embedment depth according to our ETA installation instruction (pilot hole required)
  2. Clean out the hole of all debris.
  3. Insert the pointed end of the concrete screw through the fixture and into the hole in the base material.
  4. Drive the screw or use powered impact wrench slowly, allowing the threads to tap into the base material.
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