Spherical washers and conical seats are used for transmission of tension forces to adjust tension elements, if the tension surfaces are not parallel to each other. The combination of spherical washers and conical seats allows a deviation of the tension bolt by 3°. For slots use only conical seats form G. Form D use only for closed and plain surfaces, not for slots.

Designation of a conical seat form D with d2=19 mm

Conical seat DIN 6319- D 19


  • Deliverable in stainless or other special material too.

zu den Werkstoffen

  • Material form D : Case hardening steel
  • Hardness 550 + 100 HV10 –  Eht 0,2-0,4 mm
  • Material form G : Heat-treatable steel
  • Hardness 350 + 80 HV30
  • phosphatized or brown finished