| English | Spanish | |
|---|---|---|
| Engineering | ||
| Engineering | bolt with left-hand thread | bulón zurdo [m] |
| Engineering | left-hand thread | rosca a izquierdas |
| Engineering | left-hand thread | filete a la izquierda |
| Engineering | left-hand thread | cuerda izquierda MX |
| Engineering | bolt with left-hand thread | perno zurdo |
| Technical | ||
| Technical | left-hand thread | rosca a la izquierda |
| Technical | left-hand thread | rosca zurda |
| Mechanics | ||
| Mechanics | left-hand thread | rosca zurda |
| Mechanics | left-hand thread | rosca a la izquierda |
| Machinery | ||
| Machinery | left-hand thread | rosca a izquierdas |
| Automotive | ||
| Automotive | left-hand thread | rosca a izquierda |
| Petrol | ||
| Petrol | left hand thread | rosca de paso izquierdo |
| Petrol | left-hand thread | rosca de paso izquierdo |
| Petrol | left-hand-thread running tool | herramienta viajera de rosca de paso izquierdo |
