These hexagonal nuts are used for connections, which are often tightend and released. The spherical surface in combination with a 120° countersink or a conical socket DIN 6319 allows to compensate deviations of form or position.

Designation of a hexagonal nut form B with thread M 20:

Hexagonal nut DIN 6330 – B M20

Form B with one spherical surface

  • The nuts are countersunk on both sides with 120° to the diameter d2.
  • Deliverable with fine pitch, higher grades, in stainless or other special material too.
  • Material : up to M 36 – 8 or 10
    Materia  : DIN EN 20898T2 > M 36
    240 + 62 HV 30 (188 + 114 HV 30 tolerable)