Bosch e-bike frame battery holder screw size
M5 · 20 mm long
Bosch e-bike frame battery holder takes M5 metric screws, 20 mm long.
It is listed for M5x20mm screw set for the classic frame battery holder.
This entry is marked confirmed and comes from ebike24.com.
M5 means a 5 mm nominal diameter with a 0.8 mm thread pitch. Imperial look-alike: #10-32 (4.83 mm) — the other common rack thread; check before mixing.
Bosch e-bike frame battery holder 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 |
|---|---|---|---|---|---|---|
| M5 | 20 mm | 0.8 mm | not stated | not stated | M5x20mm screw set for the classic frame battery holder | Confirmed |
Fitment records and sources
M5x20mm screw set for the classic frame battery holder
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 M5 screw measures about 5 mm with calipers (usually a hair under). If yours measures noticeably more or less, it is a different thread.
- Pitch: 0.8 mm from one thread crest to the next (12.5 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 record states 20 mm. Going longer risks bottoming out or touching parts behind the hole; going shorter loses thread engagement.
- Driver: the source does not name the drive. Standard M5 heads take PH2 for Phillips and T25 for Torx, and a 4 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 M5 is about 4.0-6.0 N·m into metal threads and 1.5-2.5 N·m into plastic bosses; snug it up and stop.
Common mix-ups with M5
- GoPro also uses M5 for its classic two-prong mount thumbscrew and buckle system, while smaller GoPro chassis screws are commonly Torx-driven without a confirmed metric thread in available sources — don't conflate the mount thumbscrew size with internal chassis screws.
- 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.
More in Vehicles, Marine & Mobility
ABB Terra DC Wallbox (3-phase UL)Adjustable Picatinny rail threaded insertAdult e-scootersAftermarket car stereo cageAirgun scope/rail mount replacement screwsAlpine Head UnitsAnalogis phono cartridge screw setArduino UNO / full-size Arduino boardsAudio MusiKraft cartridge mounting screw kitAudio MusiKraft cartridge/headshell mounting kitBar-end plug or bar-end shifterBerkel 330M Slicer carriage/guard fastener
Browse all 171 in Vehicles, Marine & Mobility →The same screw also fits
Devices whose records share a thread with Bosch e-bike frame battery holder, closest length match first.
- Tait Orca mobile radio vehicle kit (fleet trucks/buses) also M5 × 20 mm
- Bicycle water bottle cage mounts also M5 × 20 mm
- Bar-end plug or bar-end shifter also M5 × 20 mm
- Kick scooter clamp and folding hardware also M5 × 20 mm
- Motorcycle fairing bolts also M5 × 20 mm
- SPD-SL / Look 3-hole cycling cleats also M5 × 20 mm
- Triumph Thruxton handlebar riser and instrument panel also M5 × 20 mm
- Stem faceplate bolts also M5 × 20 mm
Questions about Bosch e-bike frame battery holder screws
- What size screw does Bosch e-bike frame battery holder use?
- M5 × 20 mm for M5x20mm screw set for the classic frame battery holder.
- How long are the screws in Bosch e-bike frame battery holder?
- The record gives 20 mm. Measure the original from under the head (overall for a countersunk head) to confirm before ordering.
- What is the thread pitch of an M5 screw?
- 0.8 mm (coarse), which is the standard pitch for M5 machine screws; a 0.5 mm fine pitch exists but is uncommon. The tap drill is 4.2 mm and the normal clearance hole is 5.5 mm.
- What screwdriver do I need for Bosch e-bike frame battery holder?
- The sources do not name the drive. For M5, Phillips heads normally take PH2 and Torx heads T25; socket heads take a 4 mm hex key.
- Can I use an imperial screw instead of M5?
- No. Imperial look-alike: #10-32 (4.83 mm) — the other common rack thread; check before mixing. Use a true M5 screw so it does not cross-thread or strip the hole.