Steering Lock · Front Axle
| System | Front Axle |
| Subsystem | Steering Lock |
| Assembly | Lock Nut for Centering Screw |
| Fastener | Nut |
| Thread | M8 |
| Grade | 8 |
| Years | 1972–1983 |
| Vehicles | 911SC, 911T/E/S |
| Confidence | Cross Referenced |
Source: Porsche 911 Workshop Manual, Section 4 (Front Axle and Steering), pages 497-498 (Tightening Torques for Front Axle and Steering); thread size confirmed as M8 and torque as 18 Nm by Porsche Technical Specifications (WKD 423110, 82-83 Models), resolving the manual's ambiguous "MS" print