FK-T30 Frame Screws – 7.5 mm, 100 pcs.
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FK-T30 Frame Screws – 7.5 mm, 100 pcs.

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€15.00
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Professional 7.5 mm frame screw for direct fixing of windows, doors and TRIOTHERM+ profiles into concrete, masonry, timber and other suitable substrates.
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Brian D.
Killarney,
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09.02.2026
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FK-T30 Frame Screws – 7.5 mm, 100 pcs.
Home/Store/Structural Insulation Products
Product Details
DESCRIPTION

Universal frame screw for windows, doors and TRIOTHERM+ installations

The blaugelb FK-T30 Frame Screw is a professional 7.5 mm direct-fixing screw for the plug-free installation of windows, doors, structural insulation profiles and other construction components.

It can be used in a wide range of common construction substrates including concrete, solid concrete block, calcium silicate brick, solid fired-clay brick, structural timber, lightweight aggregate concrete, aerated concrete and highly insulated clay blocks.

The FK-T30 is particularly suitable for mechanically fixing load-transferring TRIOTHERM+ profiles, assembly brackets and supports to the load-bearing building structure.

It can also be used for the direct fixing of window and door frames and is suitable for timber, PVC, aluminium and timber/aluminium frame systems.

The tapered thread tip reduces screw-in torque, while the TX T30 drive provides efficient and reliable transmission of the installation torque.

PRODUCT BENEFITS

  • Professional 7.5 mm frame fixing screw
  • Plug-free direct fixing into many common construction substrates
  • Part of the blaugelb TRIOTHERM+ fastening system
  • Suitable for fixing load-transferring TRIOTHERM+ profiles
  • Suitable for assembly brackets and structural supports
  • Suitable for direct installation of windows and doors
  • Suitable for timber, PVC, aluminium and timber/aluminium frames
  • Suitable for concrete, masonry, structural timber and aerated concrete
  • Tapered thread tip helps reduce screw-in torque
  • TX T30 drive for efficient torque transmission
  • Flat head with 13.5 mm head diameter
  • Distance fastening without lateral spacer blocks where permitted by the installation detail
  • Suitable for clamping assembly
  • Suitable for use in RC2-tested assemblies when installed according to the relevant tested system and instructions
  • Case-hardened carbon steel
  • Galvanised and passivated surface
  • 100 screws per box for the lengths offered in this product listing
APPLICATION

TRIOTHERM+ installation

The FK-T30 Frame Screw is used to mechanically secure TRIOTHERM+ structural thermal support profiles to the load-bearing building structure.

TRIOTHERM+ profiles are first bonded and sealed using Power FIX and are then mechanically fixed using suitable FK-T30 Frame Screws in accordance with the applicable installation detail.

Screw length, fixing position, screw-in depth and the number of fixings must be selected according to the substrate, TRIOTHERM+ profile, installation geometry and loads.

Window and door installation

FK-T30 can also be used for direct, plug-free installation of windows and doors into suitable substrates.

The screw is suitable for all common frame materials including timber, PVC, aluminium and timber/aluminium constructions.

Substrate preparation and screw-in depths

The required drill-hole diameter and screw-in depth depend on the substrate. Drilling dust should be removed from the hole after drilling.

For concrete, the FK-T30 must achieve a minimum screw-in depth of 40 mm into the load-bearing substrate.

Substrate Drill-hole diameter Recommended screw-in depth
Concrete 6.5 mm Minimum 40 mm
7.5 N/mm² solid concrete block 6.0 mm 70 mm
Calcium silicate brick (sand-lime brick) 6.5 mm 60 mm
Solid fired-clay brick 6.0 mm 60 mm
C24 structural timber 6.0 mm 60 mm
C16 structural timber 6.0 mm Minimum 70 mm
Lightweight aggregate concrete block (LC6 reference substrate) 6.0 mm 60 mm
Aerated concrete block PP2 No pre-drilling 210 mm
Aerated concrete block PP4/6 No pre-drilling 180 mm
Highly insulated clay block (e.g. Wienerberger Porotherm) 5.0 mm Minimum 180 mm

Due to differences in the structure, density and strength of individual building materials, preliminary fixing tests are recommended where required.

Choosing the correct screw length

The required FK-T30 screw length is calculated from:

Component or profile thickness + joint width + required screw-in depth = required screw length

The manufacturer recommends a joint width of no more than approximately 15 mm for this calculation.

The drill-hole depth should normally be approximately 10 mm deeper than the required screw-in depth.

For direct or clamping installation, the relevant system and manufacturer requirements for minimum edge distances must also be observed. The manufacturer's technical data specifies a minimum edge distance of 60 mm for the described applications.

Required installation tool

A TX T30 driver bit is required for installation.

TECHNICAL DATA
Property Value
Material Case-hardened carbon steel (C1022)
Surface Galvanised, blue passivated
Corrosion resistance 72 hours against red rust in salt spray testing according to DIN 50021SS / EN ISO 9227
Screw diameter 7.5 mm
Head diameter 13.5 mm
Head shape Flat head
Thread Tapping-screw thread with tapered tip
Drive TX T30
Manufacturer length range 42–400 mm
Pack size for lengths up to 212 mm 100 pieces
Suitable substrate categories Concrete, solid concrete block, calcium silicate brick, solid fired-clay brick, C16 and C24 structural timber, lightweight aggregate concrete, aerated concrete and highly insulated clay blocks
IMPORTANT

TRIOTHERM+ Profile, Power FIX and FK-T30 Frame Screws form the TRIOTHERM+ fastening system.

Power FIX provides the bonding and sealing connection between the TRIOTHERM+ profile and the substrate, while the FK-T30 Frame Screws provide the required mechanical, force-transmitting connection to the load-bearing structure.

Power FIX does not replace the required mechanical fixing of the TRIOTHERM+ profiles.

Screw length, screw-in depth, number of fixings and fixing positions must be selected according to the actual substrate, TRIOTHERM+ profile, installation geometry and loads.

For TRIOTHERM+ installations, the applicable system documentation, ETA-23/0620 and official installation instructions must be observed.

DOWNLOADS

FK-T30 Frame Screw – Technical Data Sheet
Official blaugelb / Meesenburg technical data, substrate recommendations and installation specifications.

Download Technical Data Sheet – English (PDF)

FK-T30 / ZK-T30 RC1 N – RC2 Installation Instructions
Official installation instructions for burglary-resistant RC1 N and RC2 window and door elements.

Download RC Installation Instructions – English (PDF)

Environmental Product Declaration (EPD) – German
Official independently verified EPD for blaugelb galvanised frame screws. An English version is not currently available from the manufacturer.

Download Environmental Product Declaration – German (PDF)

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