| |
Prehole and burring necessary? |
yes |
yes |
yes |
no |
| Special machinery or equipment necessary? |
yes |
yes |
yes |
no |
| Handling (complexity) |
complex and time consuming |
complex and time consuming |
complex and time consuming |
easy possible, extremely fast |
| |
Error rate (as an tendency) |
very high |
low |
high |
very low |
| Automation |
conditionally possible |
possible (with high effort) |
conditionally possible |
easily possible with high flexibility |
| Machining of closed profiles |
conditionally possible (only from the outside) |
conditionally possible (only from the outside) |
possible, conditionally possible on circular tubes |
simply possible |
| |
Reliability |
given only conditionally |
as a rule high |
given only conditionally |
particularly high |
| Screwing |
if applicable inexact pressing, slant position |
if applicable distortion due to heat input |
if applicable cant, distortion of thread and risk of slipping |
homogeneous moulding in direction of drilling axis |
| Multiple shift usage |
conditionally possible |
yes |
conditionally possible |
yes |
| Torque loading |
low |
high |
low |
high |
| Type of connection |
mechanical, keyed press connection |
partly joining of microstructure due to spot welding |
mechanical, keyed press connection |
homogeneously closed joining of microstructure |
| Joining partners |
work piece, press nut |
work piece, weld nut (normally weld deposit) |
work piece, instert nut |
parent material only |
