Expansion anchor Fischer 90924 50 mm for concrete 4 pcs

Fischer 90924 is a 50 mm expansion anchor designed for use in concrete. The anchor requires an 8 mm drill hole diameter and a minimum drill hole depth of 60 mm, and is supplied as a pack of four pieces in a blister. This anchor is intended for secure fixing of light to medium loads where a compact, reliable concrete anchor is needed.

Advantages

The expansion anchor features a compact 50 mm length that combines ease of installation with dependable holding power in concrete substrates. Its design allows the anchor to expand and grip the base material when the screw is tightened, providing immediate load-bearing capacity. Supplied in a small blister pack of four, it is convenient for small projects, repairs, and professional jobs where accurate quantities are required.

Suitable for

• Fixing light to medium fixtures to concrete (shelves, brackets, light fittings)
• Repair and renovation tasks requiring small quantities of anchors
• Indoor and sheltered outdoor applications in solid concrete
• Installation where an 8 mm drill hole is available

When it may not be suitable

This expansion anchor is not intended for use in hollow or weak substrates such as hollow block, drywall, or soft masonry without appropriate sleeves or specialized anchors. It is also unsuitable for heavy structural loads or safety-critical fixings where load-bearing requirements exceed the capacity of a small 50 mm concrete anchor. For applications exposed to severe corrosion or extreme environmental conditions, consider corrosion-resistant or stainless steel alternatives.

Key specifications

• Anchor length: 50 mm
• Recommended drill hole diameter: 8 mm
• Minimum drill hole depth: 60 mm
• Pack quantity: 4 pieces
• Intended base material: concrete (solid)

How to use

Drill a straight hole in solid concrete using an 8 mm masonry drill bit to a depth of at least 60 mm and remove dust from the hole. Insert the expansion anchor fully into the hole until the flange sits flush with the surface. Place the fixture over the anchor, insert the correct screw, and tighten to the specified torque for the screw size; as the screw is tightened the anchor will expand and engage the concrete. Follow general safety practices and use appropriate personal protective equipment while drilling and installing anchors.

What to consider before purchase

• Verify that the base material is solid concrete suitable for expansion anchors
• Confirm the required drill bit size (8 mm) and minimum drilling depth (60 mm)
• Check that the anchor length and pack quantity (4 pieces) meet project needs
• Assess load requirements to ensure a small expansion anchor is sufficient

Usage recommendations

Use an appropriate hammer drill and a clean masonry bit for the 8 mm hole, and always clear the drilled hole of dust for optimal performance. If higher corrosion resistance or greater load capacity is needed, choose anchors with suitable materials or larger sizes compatible with the installation.