Expansion anchor FISCHER 567899 nylon screw anchor Ø8 mm × 40 mm, for AAC/brick/concrete, pack 1200 pcs

Fischer SX Plus nylon expansion anchors (8 x 40 mm) are designed for fixing in solid and perforated building materials. Made of high-quality nylon, these expansion plugs provide a secure hold in concrete, brick, autoclaved aerated concrete and masonry. The plug's shape and features support straightforward insertion and reliable anchoring for a range of screw types, and this pack contains 1,200 pieces for larger jobs.

Advantages

The 4-way expansion ensures effective transmission of the screw's clamping force into the base material and delivers high load capacities in both solid and perforated substrates. Special fixing wings hold the screw in place during setting, allowing one-person, overhead or pre-positioned installation without separate support. The plug neck is designed to avoid radial expansion forces on the surface while tightening, reducing the risk of damage to tiles or plaster. A pronounced plug edge prevents the anchor from slipping into the drill hole and the notable tightening torque gives clear feedback when the screw is seated correctly, helping to avoid overtightening.

Suitable for

• Concrete and reinforced concrete
• Brick and masonry
• Autoclaved aerated concrete and gypsum block
• Fixing with wood, chipboard or stud screws
• Large-volume projects and professional installations (packs of many anchors)

When it may not be suitable

These nylon expansion anchors are optimised for solid and perforated mineral building materials; they are not intended for use in very soft or crumbly substrates where mechanical expansion cannot develop adequate grip. For hollow-wall systems or thin drywall constructions, alternative anchors specifically designed for hollow profiles or cavity fixing are more appropriate.

Key specifications

• Anchor type: Nylon expansion plug
• Nominal diameter: 8 mm
• Length: 40 mm
• Drill hole diameter: 8 mm
• Material compatibility: concrete, brick, autoclaved aerated concrete, masonry, gypsum block
• Screw compatibility: wood screws, chipboard screws, stud screws (select screw length = plug length + fixture thickness + screw diameter)
• Pack quantity: 1,200 pieces

How to use

Drill a hole with the specified 8 mm diameter to the required depth, remove dust, and insert the plug until the pronounced edge sits flush with the surface. For pre-positioned installation the fixing wings fold inward when the plug is inserted, holding the screw so it can be driven in without support. When the screw is tightened, the plug expands in four directions and anchors in the base material. Use the screw length formula (plug length + fixture thickness + screw diameter) to select the correct screw length. Ensure the screw type matches the recommended wood, chipboard or stud screws for optimal results.

What to consider before purchase

• Confirm substrate type (solid vs hollow) and choose anchors suitable for that material
• Verify drill bit diameter of 8 mm and required drilling depth
• Select screws of appropriate length and type (wood/chipboard/stud)
• Assess quantity needed; this pack contains 1,200 anchors for large projects

Usage recommendations

For reliable results in concrete and masonry, clean the drill hole of dust before insertion and use the screw length formula provided. For overhead or pre-positioned work, the fixing wings assist installation—drive the screw until you feel the noticeable tightening torque to avoid overtightening.