Wall plug Fischer 41903

The Fischer 41903 screw anchor is designed for secure anchoring in solid masonry such as brick and concrete. Supplied in a pack of 20, the anchor is intended for applications requiring a drilled hole of 16 mm diameter and a minimum embedment depth of 140 mm. The product is certified according to recognised ETA approvals, which confirms its suitability for structural and non-structural fixings where consistent performance and safety are required.

Advantages

The anchor provides high load-bearing capacity in solid substrates and consistent expansion for reliable retention. Its dimensions and geometry are optimised for drilled installation in brick and concrete, delivering repeatable performance across multiple fixings. Certification under ETA approvals supports documented design values and use in compliance with relevant installation standards.

Suitable for

• Anchoring structural or non-structural elements in brickwork
• Fixing rails, brackets and supports to concrete walls
• Installation of heavy fixtures where drilled anchors are required
• General repair and renovation work in masonry

Key specifications

• Recommended drill hole diameter: 16 mm
• Minimum drill hole depth / embedment: 140 mm
• Pack quantity: 20 pieces
• Intended substrates: solid brick, concrete
• Certification: ETA approvals for design and performance

How to use

Drill a clean hole of 16 mm diameter to a depth of at least 140 mm, removing dust and debris before insertion. Insert the anchor fully into the drilled hole and tighten the screw or bolt to the torque value recommended for the anchor type and the chosen fastener. Ensure that the base material is free from cracks and moisture that could affect anchoring performance. Follow design tables or manufacturer guidance for spacing, edge distances and load values when planning multiple fixings.

Recommendations

Use appropriate drill bits and personal protective equipment. For critical or load-bearing installations, verify suitability with structural calculations and follow the ETA documentation for installation parameters, torque values and safety factors.