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Flowform® Plus
The lightweight variant for fastening sheet metals

Flowform® Plus from ARNOLD is a flowhole-forming and thread-forming screw that further enhances our well-proven Flowform® solution – with a smaller diameter and – despite having the same length – weighing 25% less. Thanks to the polygonal cross-section in the functional tip, you benefit from lower joining forces when forming the holes, or – using the same force – shorter hole-forming times.

Detachable
connection

High 
strength

Reducing 
weight

Firstly, Flowform® Plus differs in dimension from Flowform®. While Flowform® screws are usually 5 mm in diameter, the Flowform® Plus screw has a diameter of just 4 mm. The base material and the heat treatment are also new features.

Flowform® Plus
The advanced screw that weighs less

Customer applications

  • A joining technology with single side access
  • Joining multi-material mixes
  • Joining with adhesive (hybrid joins are possible)
  • Total component thickness up to 7.5 mm with no pre-drilling (regardless of metal strength)
  • Joining in cast aluminium and extrusion and sheet steel up to 1000 Mpa.

ARNOLD provides the solution

Flowform® Plus
Further developments to enhance the flowhole and threadrolling screw

Technical advantages of Flowform® Plus

  • A joining technology with single side access
  • Manual screwdriving possible
  • Fastening process for hybrid sheet metal fastenings and on non predrilled clamping parts
  • Detachable fastening
  • Relatively high assembly pre-load force
  • Joins materials of different types and of the same type in cycle time for join < 4 sec.

Advantages of Flowform® Plus over Flowform®

  • Reduces tapping torque
  • 25% weight reduction
  • Can join sheet steel up to 1000 Mpa strength
  • Expands range of applications
  • Less gap formation

Animation
Flowform® Plus – the innovative leightweight joining

Comparison of
Flowform® Plus with Flowform®

High-strength material

HX420LAD 2.0 mm
AC300 2.5 mm
DP800 1.0 mm
AC300 2.5 mm
Flowform® Plus
Flowform®
  • Joining force > 3.0 kN
  • Thread tapping torque > 12 Nm
  • Gap forms between the metal sheets

Thicker applications

AC300 2.5 mm
AC300 2.5 mm
AC300 2.5 mm
Flowform® Plus
Flowform®
  • Joining force > 3.0 kN

Flowform® Plus
structure

Force application

  • Smaller in size
  • EP12 -> EP10
  • Short location times

Underhead channelling

Recess to accept rising material as the join is made


Round shaft cross-section

Bearing thread area with excess to increase load-bearing capacity


Polygonal shaft cross-section

Thread-forming area to form the counter-thread
 


Polygonal tip cross-section

Solid tip geometry makes it possible to drill into sheet metals


Everything you need.

Application-related and near-series testing
 

Find out more

Calculations and simulations for technical evaluation and optimization 

Find out more

  • Brochure Flowform® | Flowform®Plus

    The innovative sheet metal
    PDF –
    3 MB
  • Download
  • Brochure Metal multi-material joining


    PDF –
    5 MB
  • Download
  • InfosheetFlowform® Plus

    The lightweight variant for fastening sheet metals
    PDF –
    809 KB
  • Download

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