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Type F3 Beam Flange Clamp

An easy to install, high strength, beam flange clamp for suspending building services from structural or secondary beams.

View technical specification


The Type F3 is an FM approved, high strength beam flange clamp with a large clamping range for moderate to high loading applications. Supplied with or without a bolt and is compatible with drop rods and J bolts. Suitable for parallel flanges only. Manufactured from malleable iron with hot dip galvanized finish to provide high performance and anti-corrosion protection.

Features & Benefits

  • Simple cost effective solution.
  • Large clamping range.
  • Suitable for parallel flanges.


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


  • Manufactured from malleable iron to BS EN 1562.
  • Supplied with hot dip galvanized finish.

Technical Specification

Click to view labelled diagram

Product Code Safe Working Load (FOS 4:1) Dimensions
With Bolt Without Bolt Bolt 4.6 Tensile Clamping Range Tightening Torque* S T V X Width R
kN mm Nm mm mm mm mm mm
LF3037WB LF3037NB M10 1.2 2 - 30 20 22 7 10 25 38
LF3050WB LF3050NB M12 2.0 2 - 40 39 29 9 12 35 49
LF3062WB LF3062NB M16 4.0 3 - 55 93 36 12 16 46 60
LF3075WB LF3075NB M20 6.0 5 - 70 177 44 15 19 55 76

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

Without Bolt With Bolt Safe Working Load (FOS 4:1) Dimensions
Product Code Product Code Bolt Supplied Z Tensile Clamping Range W Tightening Torque* S T V X Width R
lbs ft lb
LF3037NB LF3037WB M10 (38") 270 116" - 1316" 15 78" 516" 38" 1" 112"
LF3050NB LF3050WB M12 (12") 450 116" - 1916" 29 118" 38" 12" 138" 11516"
LF3062NB LF3062WB M16 (58") 900 18" - 2316" 69 1716" 12" 58" 11316" 238"
LF3075NB LF3075WB M20 (34") 1350 316" - 234" 130 134" 916" 34" 2316" 3"

* Torque figures based on fasteners in an unlubricated condition.

Supplied without bolt or with bolt (contact your local distributor for details / options).

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

    Drilling and welding in the field 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 detailing

    Free connection detailing

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

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