b&m-FORM S®

Direct screwing system with shortened forming zone suited for all ductile metal materials

The b&m-FORM S® is a conversion of b&m-FORM® with a shortened forming zone. It is particularly suited for screw connections in tight spaces and /or assemblies allowing only a limited protrusion of the screw tip. The fully-formed threads and tip geometry guarantee a reliable screw-in process, even under unfavorable conditions.

  • Diameter: M3 – M6
  • Length: depending on diameter / 6mm – 20 mm
  • Property class: F10 according to b&m-factory standard WN04/14 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: 1 – 2 threads
  • Due to the short forming zone geometry on the screw thread, it is especially suitable for applications with limited installation space
  • 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
  • Easy hole locating due to the rounded screw tip
  • Especially suitable for applications with limited installation space as well as assemblies which allow only minimal protrusion of the screw tip
  • Suitable for aluminum direct screwing in die-cast or drilled core holes
  • Suitable for steel- and sheet metal applications
  • Fastening of the sliding roof spring
  • Screwing connection of a pump cover