Master Cylinder · Brakes, Wheels, Tires
Safety critical fastener
| System | Brakes, Wheels, Tires |
| Subsystem | Master Cylinder |
| Assembly | Attachment of Piston Rod to Eyebolt End |
| Fastener | Nut (Flat) |
| Thread | M10 |
| Grade | C 45/6 |
| Years | 1972–1981 |
| Vehicles | 911SC, 911T/E/S |
| Confidence | Factory Verified |
Source: Porsche 911 Workshop Manual, Section 6 (Front and Rear Brakes), page 543 (Tightening Torques for Front and Rear Brakes)