Trek E-Bike RIB Battery Mount screw size
M4 / M5 · 6 to 16 mm long
Trek E-Bike RIB Battery Mount takes M4 and M5 metric screws in lengths from 6 to 16 mm.
There are 2 separate fitment records for it, including alignment plate bolts for the Removable Integrated Battery assembly (M4) and general mounting hardware for the battery assembly (M5).
2 of the 2 records are marked confirmed, drawn from 1 source (phattirebikeshop.com).
For reference, M4 is 4 mm across the threads at 0.7 mm pitch. The imperial size people confuse it with: #8-32 (4.17 mm) — the standard US PC/rack screw, close but not the same.
Trek E-Bike RIB Battery Mount 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 | 6 mm | 0.7 mm | not stated | not stated | Alignment plate bolts for the Removable Integrated Battery assembly | Confirmed |
| M5 | 16 mm | 0.8 mm | not stated | not stated | General mounting hardware for the battery assembly | Confirmed |
Fitment records and sources
Alignment plate bolts for the Removable Integrated Battery assembly.
pitch 0.7 mm · tap 3.3 mm · clearance 4.5 mm · PH2 / Torx T20
General mounting hardware for the battery assembly.
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 6–16 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
- Not all telescope/finder hardware is metric — Celestron Edge/NexStar SE finder-shoe and dovetail screws are reported as 8/32 (imperial UNC), so metric M4/M5 fitments cannot be assumed across all Celestron products; must check per accessory/vintage.
- Most HVAC chassis hardware in US-market units is imperial; metric shows up mainly on European-made components.
- Archery sight and rest hardware is almost always imperial 10-24, not metric.
- Shimano SPD cleat bolts are widely sold as M5 x 8, but Shimano's own dealer manuals don't state the thread — check the old bolt.
More in Vehicles, Marine & Mobility
The same screw also fits
Devices whose records share a thread with Trek E-Bike RIB Battery Mount, closest length match first.
- Bosch e-bike battery mounting/guide bolts also M5 × 16 mm
- Cycling shoe cleat bolts also M5 × 16 mm
- Car badge / emblem studs also M4 × 6 mm
- Garden equipment control panels also M5 × 16 mm
- Shimano BL-M785 hydraulic brake lever also M5 × 16 mm
- Mobility scooter battery box screw set also M5 × 16 mm
- E-scooter deck & folding covers also M5 × 16 mm
- Honeywell Thor VM1 vehicle-mount dock also M5 × 16 mm
Questions about Trek E-Bike RIB Battery Mount screws
- What size screw does Trek E-Bike RIB Battery Mount use?
- M4 × 6 mm for alignment plate bolts for the Removable Integrated Battery assembly; M5 × 16 mm for general mounting hardware for the battery assembly.
- How long are the screws in Trek E-Bike RIB Battery Mount?
- The records range from 6 to 16 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 Trek E-Bike RIB Battery Mount?
- 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.