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FISCHER SL M20 sleeve anchor electrolytically galvanised steel - 50557

Supplier number: FISCHER 50557 | EAN 4006209505571
24.80 tax incl.
€20.50 excl. VAT (incl. all environmental contributions)
On order: delivered from 10/10/2026

The minimum purchase order quantity for the product is 5.

  • Delivery by DHL

Heavy duty Fischer sleeve anchoring

Practical benefits
  • High load bearing expansion: The expanding sleeve clamps firmly against the hole wall, allowing you to secure heavy machinery safely.
  • Flexible metric internal thread: The M 20 internal thread lets you easily attach standard metric bolts or threaded rods as needed.
  • Durable zinc plated steel: The zinc-plated steel construction protects the anchor from corrosion during everyday interior fastening applications.

In a nutshell

The right choise for

With the Fischer sl M 20 sleeve anchor, you achieve reliable, heavy-duty anchoring in solid building materials such as concrete and dense natural stone. As you tighten the bolt, the cone is pulled into the expansion sleeve, wedging firmly against the drill hole wall. Featuring an M 20 internal metric thread, this 110 mm long anchor pairs seamlessly with standard metric bolts or threaded rods. It provides the ideal solution for securing heavy machinery, steel structures, and cantilever brackets indoors while ensuring a clean, flush surface whenever fixtures are removed.



€24.80
tax incl.

Product information

Key features according to our expert

  • Wire dimension: 20 mm
  • Drilling diameter: 30 mm
  • Overall length: 110 mm

Product description

The classical steel anchor for all metrical screws.

The fischer heavy-duty anchor SL M is a sleeve anchor with internal thread made of zinc-plated steel. When tightening the screw, the cone is pulled into the expansion sleeve and expands it against the hole wall. The SL M is suitable for stand-off installation and for pre-positioned installation. The fischer heavy-duty anchor SL M is ideal for cost-effective fixing of machines or consoles in internal areas.

  • High flexibility: Internal thread is suitable for screws and threaded bolts with metric thread
  • Repeated loosening and installing of the component for adjustment is possible
  • Surface flush removal possible
  • Plastic cap on cone protects internal thread from drilling dust. This ensures that the thread remains functional
  • The optimised geometry minimises setting energy and allows for use in extremely narrow spaces. This allows for user-friendly installation
  • The three-part expansion sleeve creates even load distribution, thus allowing small edge and axial spacing. Thus the TA M is extremely flexible
  • The metric internal thread allows to use standard screws or threaded rods for the ideal adaptation to suit the intended use
  • The red plastic cap protects against soiling and thus ensures free-running of the thread

Suitable for

  • The SL M is suitable for pre-positioned installation
  • When applying the torque, the cone is pulled into the expansion sleeve and expands it against the drill hole wall
  • For correct installation, it must be ensured that the pre-positioned anchor SL M can be supported on the attachment, or that the threaded rod is countered

Building materials

  • Concrete C20/25 to C50/60, non-cracked
  • Concrete C12/15
  • Natural stone with dense structure

Application

  • Steel constructions
  • Handrails
  • Consoles
  • Ladders
  • Cable trays
  • Machines
  • Staircases
  • Gates
  • Façades
  • Stand-off installations

All Features

Wire dimension
20 mm
Drilling diameter
30 mm
Overall length
110 mm
Material
electrolytically galvanised steel
Anchor length
110 mm
Drill diameter
30 mm
Anchoring depth
77 mm
Min. screw-in depth
110 mm
Min. borehole depth
130 mm
Internal thread
M20
Thread size (metric)
20 mm
  • Brand FISCHER
  • EAN 4006209505571
  • Supplier number FISCHER 50557

Frequently asked questions about this product

Answered by specialists
What drill hole diameter is required for this anchor?
The Fischer SL M 20 sleeve anchor requires a drill hole diameter of 30 mm.
Which bolts or rods are compatible with this sleeve anchor?
Thanks to its internal metric thread, this anchor accepts standard metric M20 bolts and threaded rods.
What are the dimensions of the Fischer SL M 20 anchor?
The anchor has an overall length of 110 mm and an M20 internal thread size.
What are the main applications for this anchor?
Made from zinc-plated steel, it is suited for heavy-duty fixings such as machinery and consoles in dry indoor areas.
How does the anchor expand inside the drill hole?
When tightening the bolt, the cone is pulled into the expansion sleeve, wedging it firmly against the drill hole wall.
Questions about this product?

Our product specialists are happy to help with any questions about this range. Call, email or chat with us!

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