Art.-No. 574031

fischer inch concrete screwFBS IN 1/4 X 2-1/2 I 1/4 with internally threaded head

Name: fischer inch concrete screwFBS IN 1/4 X 2-1/2 I 1/4 with internally threaded head
Brand: fischer

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Top Features

The internal thread design fits perfectly to applications like fixings of pipe routes, channel systems, ventilation ducts and facilities in the building service engineering.

The powerful concrete screw for fast and simple installation.

Advantages

The special thread geometry enables fast cutting into the concrete and allow higher loads.
The expansion-free anchorage (undercut) ensures low edge and axial clearances.
The ribs under the head prevent accidental loosening of the concrete screw and making the system more secure.
The internal thread design fits perfectly to applications like fixings of pipe routes, channel systems, ventilation ducts and facilities in the building service engineering.

The fischer concrete screw FBS IN I is made of zinc-plated steel with an internally threaded head. The expansion-free anchorage (undercut) ensures low edge and axial clearances. The ICC approval for cracked and non-cracked concrete as well as for seismic loads guarantees even more safety.

Functionality

The concrete screw FBS-IN I is suitable for push-through installation.
For the installation, we recommend the fischer impact wrench FSS 18V with a compatible socket.
If the screw head is in contact with the fixture, the correct installation of the screw is ensured (visual setting check).

Installation steps exemplary for FBS IN I at the ceiling

1 / 4

Installation steps exemplary for FBS IN HW at the floor

1 / 4

Drill diameter ( d₀ )	1/4 in
Min. drill hole depth for pre-positioned installation ( h₁ )	2 5/8 in
Anchor length ( l )	2 1/2 in
Screw-in depth ( h_nom )	2 1/2 in
Through hole ( d_f )	3/8 in
Connection thread UNC	1/4 in

fischer inch concrete screwFBS IN 1/4 X 2-1/2 I 1/4 with internally threaded head

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