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Type CF High Slip Resistance Clamp

High slip resistance girder clamp designed to hook over the flange of beams, angles and channels to connect opposing steel sections.

View technical specification


The Type CF girder clamp is used to achieve a fast steelwork fixing connection where the flanges of steel beams, angles or channels are opposing each other. The high slip resistance clamp is designed to be used in a two clamp configuration and to hook over the edge of the flange. A bolt, threaded rod or other threaded item is used to connect the two clamps and complete the assembly. Type CF can also be combined with our other HSR girder clamp products to make connections from a flange edge to the flat face of a steel section. Manufactured from SG iron with a hot dip galvanised finish to provide high performance and anti-corrosion protection.

Features & Benefits

  • Hooks over flange edge to allow connection of opposing sections.
  • High slip resistance for tensile, frictional and combined load applications.
  • Suitable for parallel and tapered flanges up to 8°.
  • Lindapter recommends the use of DTI Washers conforming to EN14399-9 with the Type CF.


Click on an approval logo to download the certificate or report.

Location & End Plates

These plates ensure the clamps and bolts are located in the correct position relative to the supporting steelwork. Location plates are simple fabricated items designed to sit between the two sections to be clamped together to ensure the bolts are fixed at the correct centres. End plates are simple fabricated items that are pre-welded to support frames, bracket or sections, allowing connection to the supporting structure with standard Lindapter clamps. Download datasheet for further information.


  • Manufactured from SG iron to BS EN 1563.
  • Available with hot dip galvanised finish.
  • Reaction to fire: A1 (Steel)

Durability and corrosion protection:

Corrosivity Class Galvanised Steel
C1 More than 50 years
C2 More than 50 years
C3 More than 20 years

For C4 and C5 corrosion categories contact us.

Technical Specification

Click to view labelled diagram

Safe Working Loads Dimensions
Product Code Bolt 8.8 Z Tensile / 1 Bolt (FOS 5:1) Slip1) / 2 Bolts (FOS 2:1) Tightening Torque* Clamping Range V Y X T Width
Painted Steelwork2) Galvanised Steelwork
kN kN kN Nm mm mm mm mm mm
CF12 M12 8.5 3.4 3.9 90 6 - 13 32 14 21 - 29 46
CF212 M12 8.5 3.4 3.9 90 12 - 20 39 16 28 - 37 48
CF16 M16 16 8 10 240 8 - 16 44 18 25 - 33 56
CF216 M16 16 8 10 240 15 - 25 50 21 35 - 47 62
CF20 M20 26.3 13 16 470 10 - 19 53 22 30 - 41 65
CF220 M20 26.3 13 16 470 18 - 30 64 27 41 - 55 70
CF combinations with other Lindapter clamps
CF + A3) M12 5.8 0.9 0.9 69
CF + A3) M16 8.5 1.7 1.7 147
CF + A3) M20 14.7 3.0 3.0 285
CF + AF / AAF M12 8.5 3.4 3.9 90
CF + AF / AAF M16 16.0 8.0 10.0 240
CF + AF / AAF M20 26.3 13.0 16.0 470

1) Slip resistant values calculated against movement exceeding 0.1mm.

2) Shot blast and painted steelwork.

3) Also applies to Type B, Type LR, Type D2 and Type BR.

* Torque figures based on bolts / setscrews in an unlubricated condition.

  For Characteristic Resistances when designing a connection to Eurocode 3, please refer to DoP No.011

Faster to Install

No drilling or welding!

Independently Approved

Reasons to choose Lindapter

  • Save time and money

    Save time and money

    Clamping two steel sections together avoids time-consuming welding or conventional drilling and bolting.

  • Safer connections

    Safer connections

    On-site drilling and welding is avoided, removing the need for hot work permits and encouraging safer site conditions.

  • High strength

    High strength

    Lindapter clamps are manufactured from high strength materials to resist high load requirements and harsh environments.

  • Industry leading approvals

    Industry leading approvals

    Lindapter has earned a reputation synonymous with safety and reliability, gaining multiple independent approvals.

  • Adjustable


    Quickly align steel sections by sliding the section into the correct position before tightening the Girder Clamp to complete the installation.

  • Free connection design

    Free connection design

    Lindapter’s experienced Engineers can design a bespoke connection based on your specific requirements free of charge.

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