Wall anchor FISCHER 503788 – screw anchor / wall plug, pack of 4

The Fischer injection anchor sleeve FIS H K is designed for mortar-saving installation of threaded rods and internal threaded anchors in perforated brick masonry. Its optimized lattice structure reduces the amount of injection mortar required by allowing the mortar to be pressed through the sleeve and form a secure mechanical interlock with the brick, transferring loads into the base material. The sleeve supports pre-positioned installation and can bridge non-load-bearing layers when used with compatible Fischer injection mortars such as FIS V, FIS VW HIGH SPEED, FIS VS LOW SPEED, FIS VL, FIS Green, FIS P Plus and FIS P. Observe approvals for the chosen mortar.

Advantages

The lattice structure lowers mortar consumption while creating a reliable form-fit connection in perforated brick. Centring blades accommodate anchor rods of different diameters to simplify inventory and installation. A barbed hook design prevents the sleeve from falling out during overhead work. The system is ETA-approved for targeted fastening tasks.

Suitable for

• Anchoring threaded rods (FIS A) and internal threaded anchors (FIS E) in perforated brick masonry
• Installations where reduced injection mortar consumption is desired
• Pre-positioned installations and bridging non-load-bearing layers
• Indoor and sheltered outdoor applications using approved injection mortars

When it may not be suitable

The injection anchor sleeve is specifically optimised for perforated brick; it is not intended as a universal solution for all masonry types such as solid concrete or natural stone unless the system and mortar approvals explicitly allow those substrates. Also ensure the selected injection mortar is approved for the intended base material and load case before use.

Key specifications

• Material: injection anchor sleeve with lattice/grating structure for mortar flow
• Application: designed for perforated brick masonry
• Compatible mortar types: epoxy/hybrid/injection mortars from the FIS series (see manufacturer for approved variants)
• Installation method: pre-positioned setting with injection mortar pressed through sleeve
• Features: centring blades for varied rod diameters; barbed hook to prevent falling during overhead work

How to use

Drill the hole to the specified diameter and depth for the chosen sleeve and clean it thoroughly. Insert the injection anchor sleeve to the pre-positioned depth, then inject the approved Fischer injection mortar so that it is pressed through the lattice structure into the perforated brick. Insert the threaded rod or internal threaded anchor and tighten to the required torque once the mortar has cured according to the mortar manufacturer’s instructions.

What to consider before purchase

• Confirm compatibility of the sleeve size with the threaded rod or internal threaded anchor you plan to use
• Check that the chosen Fischer injection mortar is approved for the perforated brick and the intended load
• Ensure the sleeve is suitable for pre-positioned installation and for bridging any non-load-bearing layers present

Usage recommendations

Use the FIS H K anchor sleeve with Fischer-approved injection mortars and follow the manufacturer’s curing times and installation torques to achieve the intended load performance in perforated brick masonry.