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Type LS Girder Clamp

Stainless steel, self-adjusting girder clamp used to quickly connect steel beams with flat or tapered flanges and resist moderate tensile loading. Provides excellent corrosion resistance.

View technical specification


The Type LS girder clamp is used to achieve a fast steelwork fixing connection between two steel beams or other steel sections where moderate load capacities are present. Manufactured from high strength cast stainless steel grade 316 to provide excellent corrosion resistance. The clamp also self-adjusts to suit flange thicknesses between 3mm and 30mm. Suitable for use on parallel and tapered flanges up to 10°.

Features & Benefits

  • Made from high strength stainless steel grade 316.
  • Self-adjusts to suit 3mm - 30mm flange thicknesses (size M20).
  • For parallel and tapered flanges up to 10°.
  • The tail spans slotted clearance holes.


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

Packing Pieces

Packing pieces are available to increase the clamping range. Download datasheet for further information.

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 stainless steel to BS EN 3146.
  • Reaction to fire: A1 (Steel)

Durability and corrosion protection:

Corrosivity Class Stainless Steel
C1 More than 50 years
C2 More than 50 years
C3 More than 50 years

For C4 and C5 corrosion categories contact us.

Technical Specification

Click to view labelled diagram

Safe Working Loads Dimensions
Product Code Bolt A4-70 Z Tensile / 1 Bolt (FOS 5:1) Slip1) / 2 Bolts (FOS 2:1) Tightening Torque* Clamping Range V Y X T Width
kN kN Nm mm mm mm mm mm
LS10 M10 3.0 1.5 40 3 - 15 17 - 19 18 - 24 16 - 21 38
LS12 M12 7.0 2.0 80 3 - 20 16 - 22 18 - 29 17 - 23 40
LS16 M16 10.0 3.0 200 3 - 25 22 - 25 27 - 37 20 - 28 55
LS20 M20 18.0 5.0 400 3 - 30 24 - 31 25 - 42 23 - 32 60

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

* 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.008

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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