Bosch Performance Line CX Gen 4 Motor screw size
M4 · 12 mm long
If you are replacing a screw on Bosch Performance Line CX Gen 4 Motor, the thread is M4, 12 mm long.
Where it is used: fastening screw for the design cover (shroud).
This entry is marked confirmed and comes from ebike24.com.
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.
Bosch Performance Line CX Gen 4 Motor 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 | 12 mm | 0.7 mm | not stated | not stated | Fastening screw for the design cover (shroud) | Confirmed |
Fitment records and sources
Fastening screw for the design cover (shroud).
pitch 0.7 mm · tap 3.3 mm · clearance 4.5 mm · PH2 / Torx T20
How to check the screw before you buy
- On vehicles and bikes, use the original strength class and finish; outdoor hardware is usually stainless or coated to resist corrosion.
- Diameter: across the threads an M4 screw measures about 4 mm with calipers (usually a hair under). If yours measures noticeably more or less, it is a different thread.
- 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 record states 12 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 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
- M4 and 6-32 UNC share a nominal diameter with different pitch — a classic cross-thread in US-market kits.
Buy these screws at TechSpare Warehouse
In stock and shipped from South Carolina. Our black screws are Phillips wafer head (low profile); match the head style and length to the original before you order.
More in Vehicles, Marine & Mobility
The same screw also fits
Devices whose records share a thread with Bosch Performance Line CX Gen 4 Motor, closest length match first.
- Dometic Refrigerator also M4 × 12 mm
- Chainsaw air filter cover also M4 × 12 mm
- Motorcycle fairing panels also M4 × 12 mm
- Drawer slide rails also M4 × 12 mm
- Winter mechanical flight instruments (glider panel) also M4 × 12 mm
- Shimano BL-M785 hydraulic brake lever also M4 × 12 mm
- Car centre console and vent trim also M4 × 12 mm
- RV / camper cabinet hardware also M4 × 12 mm
Questions about Bosch Performance Line CX Gen 4 Motor screws
- What size screw does Bosch Performance Line CX Gen 4 Motor use?
- M4 × 12 mm for fastening screw for the design cover (shroud).
- How long are the screws in Bosch Performance Line CX Gen 4 Motor?
- The record gives 12 mm. Measure the original from under the head (overall for a countersunk head) to confirm before ordering.
- 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 Bosch Performance Line CX Gen 4 Motor?
- 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.