| Subject | English | Spanish |
| mech.eng. | axially loaded helical spring | resorte helicoidal de torsión |
| transp., mech.eng. | flexible helical-spring coupling | acoplamiento elástico por muelles helicoidales |
| industr., construct., tech. | helical spring | muelle de hélice |
| industr., construct., tech. | helical spring | muelle espiral |
| industr., construct., tech. | helical spring | resorte en espiral |
| industr., construct., tech. | helical spring | resorte helicoidal |
| industr., construct., tech. | helical spring | muelle helicoidal |
| industr., construct., tech. | helical spring | muelle en espiral cilíndrica |
| tech. | helical spring | resorte espiral |
| transp., mech.eng. | helical-spring gear | acoplamiento elástico por muelles helicoidales |
| mech.eng. | tangentially loaded helical spring | resorte helicoidal de flexión |