Specialized direct screwing system for thin sheet metal applications

The b&m-SHEETFORM® is provided with a forming zone specially designed for thin sheet metal applications (t ? 2mm). This is particularly suited for screw connections in through-holes or passages. When the core hole is optimally designed, the b&m-SHEETFORM® forms a hole-reinforcing collar from the sheet metal, which increases the number of threads in the clearance-hole and guarantees a connection with a high load capacity.

  • Diameter: M3 – M6
  • Length: depending on diameter / 10mm – 30mm
  • Property class: F10 according to b&m-factory standard WN 04/14 or according to DIN/ISO specification
  • Flank angle: 60°
  • Thread pitch: metric according to DIN 13
  • Head geometry: feasible solutions according to customer specification
  • Coating: optional according to specification (integrated or additionally applied lubricant according to application)
  • Thread forming zone: 6 – 7 threads
  • Specially developed for thin sheet metal applications
  • Cost benefits due to the elimination of punched, press-fit or welded nuts
  • Easy hole locating due to the special forming zone geometry
  • Increased number of threads through forming of a hole-reinforcing collar
  • Circular thread cross section and fully pronounced thread flanks offer maximum flank coverage and through this a high overtorque
  • Large process window between forming torque and overtorque
  • Easy assembly with little need for axial force during the screw-in process
  • A metric thread is generated, so that metric equivalents can be used for repairs
  • Especially suitable for thin sheet metal applications in aluminum and steel
  • sunroof screw connection