Inside diameter of the plane head bearing surface
| Symbol | da |
|---|---|
| Unit | mm |
| Attribute-ID | vdi_2230_inside_diameter_of_the_plane_head_bearing_surface |
| Numeric ID | 12212 |
| Value Type | PMTechValue |
The inside diameter of the plane head bearing surface da (at the inlet of the transition radius of the shank) must be smaller than the bore diameter to allow a flat head support.