Universal rectangular nut

Application area

  • These self-piercing nuts can be used for component thicknesses from 0.7 to 3.5 mm and tensile strengths of up to 800 MPa
    or as rivet nuts for component thicknesses of up to 6.0 mm and tensile strengths of up to 1200 mm²
  • Suitable for a wide range of dynamic load conditions
  • High resistance to twist and ejection forces for thin sheet metals
  • Can be used for aluminium
  • Excellent cost/performance ratio
  • Suitable for use with surface-treated, galvanised or painted components

Technical characteristics

  • Thread sizes: M5 to M10
  • Self-piercing, can be used for single-stage processes (no hole preparation required) or with pre-punched processes (riveting)
  • Ideal for surface-treated sheet metals
  • FK 8 (standard)
  • Resistance to corrosion in accordance with the customer´s requirements
  • No adverse effects on the joint or function of the thread; no damage due to weld spatters
  • High resistance to twist forces, even for thin sheet metals
  • Nut positioning tolerance ranges can be halved as compared to welding methods
  • Straightforward, in-process and non-destructive quality testing possible by worker instead of elaborate destructive tests

Your contact

Telephone: 49 (0)6175 799-0

Processing steps

  • Position component above die
  • The support fastener is pushed through the component material by means of axial motion
  • The specific geometry of the die is used to form from the component material the nut shaft area so as to result in a form-fitting and friction-locking connection. There is no deformation of the nut

As-delivered condition

Sheet-metal preparation



Typical applications

Automotive sector

Body parts, fastening of sunroofs, loud speaker connections, window cranks, wing attachment, door modules, hatches and bonnets, seats, instrument panels, rear panels

Non-automotive sector

Thick- and thin-walled formed sheet metal parts, e.g. household appliances, agricultural machines, construction industry and building hardware industry

Custom versions

Strength classes 10, 12; UNC/UNF whitworth, no thread, with centring reduction, bearing bushings, centring elements, spacers