Apple Watch case screws screw size
M1.4 · 1.5 to 2 mm long
If you are replacing a screw on Apple Watch case screws, the thread is M1.4 in lengths from 1.5 to 2 mm.
Where it is used: community measurement of Apple Watch pentalobe case screws.
Head and drive, as the source states them: Pentalobe drive.
This entry is marked reported and comes from ifixit.com.
For reference, M1.4 is 1.4 mm across the threads at 0.3 mm pitch. The imperial size people confuse it with: #0-80 UNF (1.52 mm) — close in diameter, different pitch, do not mix.
Apple Watch case screws 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 |
|---|---|---|---|---|---|---|
| M1.4 | 1.5–2 mm | 0.3 mm | not stated | Pentalobe | Community measurement of Apple Watch pentalobe case screws | Reported |
Fitment records and sources
Community measurement of Apple Watch pentalobe case screws
pitch 0.3 mm · tap 1.1 mm · clearance 1.6 mm · PH000 / PH00 / Torx T2–T3
How to check the screw before you buy
- Phone and wearable screws are tiny and often differ by fractions of a millimetre between positions; keep each one next to the hole it came from.
- Diameter: across the threads an M1.4 screw measures about 1.4 mm with calipers (usually a hair under). If yours measures noticeably more or less, it is a different thread.
- Pitch: 0.3 mm from one thread crest to the next (33.33 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 1.5–2 mm, which means different positions take different lengths — match each hole to its own screw.
- Driver: the source names a Pentalobe drive. For comparison, standard M1.4 heads take PH000 / PH00 (Phillips) or T2–T3 (Torx), or a 1.3 mm hex key.
- Tightening: no device-specific torque is published in these records. The site's general figure for M1.4 is about 8-12 N·cm into metal threads and 4-7 N·cm into plastic bosses; snug it up and stop.
Common mix-ups with M1.4
- M1.4 is THE Samsung Galaxy internal screw across S, A, M and Note lines — but lengths run 2.3mm to 4mm+ and are not interchangeable between models.
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 Phones, Tablets & Wearables
The same screw also fits
Devices whose records share a thread with Apple Watch case screws, closest length match first.
- Samsung Galaxy S23 board screws also M1.4 × 2 mm
- Samsung Galaxy S23 USB-C daughterboard also M1.4 × 2 mm
- Watch casebacks & dials also M1.4 × 2 mm
- Samsung Galaxy S23 screen/battery assembly also M1.4 × 2 mm
- Garmin smartwatch back cover also M1.4 × 2 mm
- OnePlus / Xiaomi flagship midframes also M1.4 × 2 mm
- Google Pixel 7 battery bracket also M1.4 × 2 mm
- Miniature precision instrument screws (NBK) also M1.4 × 2 mm
Questions about Apple Watch case screws screws
- What size screw does Apple Watch case screws use?
- M1.4 × 1.5–2 mm for community measurement of Apple Watch pentalobe case screws.
- How long are the screws in Apple Watch case screws?
- The records range from 1.5 to 2 mm depending on the position, so match each screw to its own hole.
- What is the thread pitch of an M1.4 screw?
- 0.3 mm (coarse), which is the standard pitch for M1.4 machine screws. The tap drill is 1.1 mm and the normal clearance hole is 1.6 mm.
- What screwdriver do I need for Apple Watch case screws?
- The source lists a Pentalobe drive. Standard M1.4 heads otherwise take PH000 / PH00 (Phillips) or T2–T3 (Torx), or a 1.3 mm hex key.
- Can I use an imperial screw instead of M1.4?
- No. Imperial look-alike: #0-80 UNF (1.52 mm) — close in diameter, different pitch, do not mix. Use a true M1.4 screw so it does not cross-thread or strip the hole.
- Where can I buy replacement screws for Apple Watch case screws?
- TechSpareWarehouse (our own store) lists M1.4 x 2mm, which matches the length in the records above.