Shimano Ultegra RD-6700 rear derailleur screw size
M4 / M5 · 8 to 13.5 mm long
Our records put Shimano Ultegra RD-6700 rear derailleur on M4 and M5 screws in lengths from 8 to 13.5 mm.
There are 3 separate fitment records for it, including B-tension adjusting screw (M4), stroke (high/low limit) adjusting screws (M4) and cable fixing bolt and plate (M5).
3 of the 3 records are marked confirmed, drawn from 1 source (easymanua.ls).
M4 means a 4 mm nominal diameter with a 0.7 mm thread pitch. Imperial look-alike: #8-32 (4.17 mm) — the standard US PC/rack screw, close but not the same.
Shimano Ultegra RD-6700 rear derailleur screw specifications
One row per fitment record. Head, drive are shown only where the source states them; pitch is the ISO coarse pitch for the thread.
| Thread | Length | Pitch | Head | Drive | Where it goes | Status |
|---|---|---|---|---|---|---|
| M4 | 13.5 mm | 0.7 mm | not stated | not stated | B-tension adjusting screw | Confirmed |
| M4 | 11.5 mm | 0.7 mm | not stated | not stated | stroke (high/low limit) adjusting screws | Confirmed |
| M5 | 8 mm | 0.8 mm | not stated | not stated | cable fixing bolt and plate | Confirmed |
Fitment records and sources
B-tension adjusting screw
pitch 0.7 mm · tap 3.3 mm · clearance 4.5 mm · PH2 / Torx T20
stroke (high/low limit) adjusting screws
pitch 0.7 mm · tap 3.3 mm · clearance 4.5 mm · PH2 / Torx T20
cable fixing bolt and plate
pitch 0.8 mm · tap 4.2 mm · clearance 5.5 mm · PH2 / Torx T25
How to check the screw before you buy
- Where the manufacturer publishes a torque value, use a torque driver rather than feel.
- Diameter: across the threads an M4 screw measures about 4 mm with calipers (usually a hair under). This device also uses M5, so measure each screw rather than assuming they match.
- Pitch: 0.7 mm from one thread crest to the next (14.29 crests per centimetre). A thread pitch gauge or the pitch-gauge tool settles it in seconds.
- Length: measure from under the head to the tip for pan, button, wafer and cap heads; countersunk (flat) heads are measured overall.
- The records span 8–13.5 mm, which means different positions take different lengths — match each hole to its own screw.
- Driver: the source does not name the drive. Standard M4 heads take PH2 for Phillips and T20 for Torx, and a 3 mm hex key for socket heads; a bit that fits loosely will cam out and strip the head.
- Tightening: no device-specific torque is published in these records. The site's general figure for M4 is about 2.0-3.0 N·m into metal threads and 0.8-1.4 N·m into plastic bosses; snug it up and stop.
Common mix-ups with M4 / M5
- Festo sensor brackets are named after the sensor interface (DASP-M4-...), but the bracket's own fixing screws are often a different size (M5/M6/M8).
- M4 and 6-32 UNC share a nominal diameter with different pitch — a classic cross-thread in US-market kits.
- Wheelchair and mobility OEM screws specify an exact standard and strength class (ISO 7045 CL4.8, ISO 4762 CL12.9). Matching only the thread size can cause a failure under load.
- Carbon bosses strip easily: 2-4 Nm torque and the right length so the bolt doesn't bottom out.
More in Vehicles, Marine & Mobility
The same screw also fits
Devices whose records share a thread with Shimano Ultegra RD-6700 rear derailleur, closest length match first.
- Chainsaw air filter cover also M4 × 13.5 mm
- Motorcycle fairing panels also M4 × 13.5 mm
- Drawer slide rails also M4 × 13.5 mm
- Shimano derailleur limit screws (H/L limit and B-tension) also M4 × 11.5 mm
- Six-bolt disc brake rotor also M5 × 8 mm
- RV / camper cabinet hardware also M4 × 13.5 mm
- Shimano BL-M785 hydraulic brake lever also M5 × 8 mm
- Car centre console and vent trim also M4 × 13.5 mm
Questions about Shimano Ultegra RD-6700 rear derailleur screws
- What size screw does Shimano Ultegra RD-6700 rear derailleur use?
- M4 × 13.5 mm for B-tension adjusting screw; M4 × 11.5 mm for stroke (high/low limit) adjusting screws; M5 × 8 mm for cable fixing bolt and plate.
- How long are the screws in Shimano Ultegra RD-6700 rear derailleur?
- The records range from 8 to 13.5 mm depending on the position, so match each screw to its own hole.
- What is the thread pitch of an M4 screw?
- 0.7 mm (coarse), which is the standard pitch for M4 machine screws; a 0.5 mm fine pitch exists but is uncommon. The tap drill is 3.3 mm and the normal clearance hole is 4.5 mm.
- What screwdriver do I need for Shimano Ultegra RD-6700 rear derailleur?
- The sources do not name the drive. For M4, Phillips heads normally take PH2 and Torx heads T20; socket heads take a 3 mm hex key.
- Can I use an imperial screw instead of M4?
- No. Imperial look-alike: #8-32 (4.17 mm) — the standard US PC/rack screw, close but not the same. Use a true M4 screw so it does not cross-thread or strip the hole.