Rohloff Grub screw bayonet connectors
Rohloff Grub Screws for bayonet connectors (8570, pair) clamp the shift cables in the bayonet connectors of the internal gear mech and in the cable drum of the external gear mech on the SPEEDHUB 500/14 – tiny genuine parts that keep your shifting precise.
Why genuine grub screws?
Easy to lose. Small M4x4 screws drop out easily during a cable change – keep a spare pair. 
Correct size and thread. M4x4 with 2 mm Allen key, tightened to 1.5 Nm according to Rohloff. 
Firm cable clamping. A good grub screw holds the cable end securely, so the gear steps stay precise. 
Two uses. Bayonet connectors of the internal gear mech and the cable drum of the external gear mech.
Who is it for?
- Riders changing shift cables. A fresh screw is better than a worn hex socket.
- Workshops. A standard Rohloff spare for every cable job.
Compatibility
| Fits | SPEEDHUB 500/14: bayonet connectors (internal gear mech), cable drum (external gear mech) |
|---|---|
| Contents | 2 grub screws |
| Size | M4x4 |
| Tool | 2 mm Allen key |
| Torque | 1.5 Nm |
Frequently asked questions
How many grub screws does a hub use?
Rohloff lists 8 bayonet connector screws for the internal gear mech and 2 cable drum screws for the external gear mech.
Can I reuse the old screws?
Yes, if the hex socket and thread are in good shape. If the socket is rounded, replace them.
About Rohloff
Rohloff AG designs and builds the SPEEDHUB 500/14 in Fuldatal, Germany: a 14-speed gear hub with a 526% gear range that has proven itself for more than 20 years on touring, tandem, cargo and e-bikes.
BoodaBike (Massive Bikes, Budapest) is an official Rohloff service centre, trained by Rohloff, and an official European distributor of Rohloff hubs and genuine spare parts. Not sure which part fits your hub? Send us the serial number and a photo of your hub and we will check it for you.