ASUS ROG Zephyrus M16 (GU603) screw size
M1.2 / M2 / M2.5 · 1.5 to 9 mm long
If you are replacing a screw on ASUS ROG Zephyrus M16 (GU603), the thread is M1.2, M2 and M2.5 in lengths from 1.5 to 9 mm.
There are 9 separate fitment records for it, including keyboard module to main base (M1.2), battery pack retention (M2) and thermal module retention (M2), plus 6 more in the table below.
9 of the 9 records are marked confirmed, drawn from 1 source (dlcdnets.asus.com).
M1.2 means a 1.2 mm nominal diameter with a 0.25 mm thread pitch. Imperial look-alike: #0-80 UNF (1.52 mm) is the closest imperial screw, but it is bigger — not a substitute.
ASUS ROG Zephyrus M16 (GU603) 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 |
|---|---|---|---|---|---|---|
| M1.2 | 1.5 mm | 0.25 mm | not stated | not stated | Keyboard module to main base | Confirmed |
| M2 | 4 mm | 0.4 mm | not stated | not stated | Battery pack retention | Confirmed |
| M2 | 4 mm | 0.4 mm | not stated | not stated | Thermal module retention | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | SSD card retention | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | WLAN card retention | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | Mainboard retention | Confirmed |
| M2 | 2 mm | 0.4 mm | not stated | not stated | Touchpad module retention | Confirmed |
| M2.5 | 9 mm | 0.45 mm | not stated | not stated | Back cover retention (set 1) | Confirmed |
| M2.5 | 6.5 mm | 0.45 mm | not stated | not stated | Back cover retention (set 2) | Confirmed |
Fitment records and sources
Keyboard module to main base
pitch 0.25 mm · tap 0.95 mm · clearance 1.4 mm · PH000 / JIS 00 / Torx T1–T2
Battery pack retention
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Thermal module retention
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
SSD card retention
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
WLAN card retention
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Mainboard retention
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Touchpad module retention
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Back cover retention (set 1)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Back cover retention (set 2)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
How to check the screw before you buy
- Laptop covers and brackets often mix two or three lengths of the same thread, so lay the screws out in the order they came out (a magnetic mat or a sheet of paper with the hole pattern drawn on it works).
- Diameter: across the threads an M1.2 screw measures about 1.2 mm with calipers (usually a hair under). This device also uses M2 / M2.5, so measure each screw rather than assuming they match.
- Pitch: 0.25 mm from one thread crest to the next (40 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 1.5–9 mm, which means different positions take different lengths — match each hole to its own screw.
- Driver: the source does not name the drive. Standard M1.2 heads take PH000 / JIS 00 for Phillips and T1–T2 for Torx; 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 M1.2 is about 5-8 N·cm into metal threads and 3-5 N·cm into plastic bosses; snug it up and stop.
Common mix-ups with M1.2 / M2 / M2.5
- Framework lists both M1.2 x 3.0 silver and M1.6 x 3.0 black expansion-card screws; they look identical in the tray but are not interchangeable.
- ASUS ROG Ally screw sizes circulating online (M2x16, M2x10) come from a community Q&A, not an ASUS manual — measure before ordering.
- M2.5 and M3 look the same to the naked eye — you need calipers on the shank to tell them apart.
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.
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More in Laptops & PCs
The same screw also fits
Devices whose records share a thread with ASUS ROG Zephyrus M16 (GU603), closest length match first.
- Dell Vostro 14 5402 also M2 × 4 mm
- Lenovo ThinkPad T14s Gen 2 also M2 × 3 mm
- Dell Alienware x15 R2 also M1.2 × 1.5 mm
- Lenovo YOGA 730-13IKB also M2 × 2 mm
- Dell Inspiron 14 5491 also M2 × 3 mm
- Dell Inspiron 14 5485 also M2 × 4 mm
- Lenovo YOGA 500-14ISK also M2 × 4 mm
- Lenovo IdeaPad Y580 also M2 × 4 mm
Questions about ASUS ROG Zephyrus M16 (GU603) screws
- What size screw does ASUS ROG Zephyrus M16 (GU603) use?
- M1.2 × 1.5 mm for keyboard module to main base; M2 × 4 mm for battery pack retention; M2 × 4 mm for thermal module retention; M2 × 3 mm for SSD card retention; M2 × 3 mm for WLAN card retention; M2 × 3 mm for mainboard retention; M2 × 2 mm for touchpad module retention; M2.5 × 9 mm for back cover retention (set 1); M2.5 × 6.5 mm for back cover retention (set 2).
- How long are the screws in ASUS ROG Zephyrus M16 (GU603)?
- The records range from 1.5 to 9 mm depending on the position, so match each screw to its own hole.
- What is the thread pitch of an M1.2 screw?
- 0.25 mm (coarse), which is the standard pitch for M1.2 machine screws. The tap drill is 0.95 mm and the normal clearance hole is 1.4 mm.
- What screwdriver do I need for ASUS ROG Zephyrus M16 (GU603)?
- The sources do not name the drive. For M1.2, Phillips heads normally take PH000 / JIS 00 and Torx heads T1–T2.
- Can I use an imperial screw instead of M1.2?
- No. Imperial look-alike: #0-80 UNF (1.52 mm) is the closest imperial screw, but it is bigger — not a substitute. Use a true M1.2 screw so it does not cross-thread or strip the hole.
- Where can I buy replacement screws for ASUS ROG Zephyrus M16 (GU603)?
- TechSpareWarehouse (our own store) lists M2 x 4mm, M2 x 3mm and M2 x 2mm, which match lengths in the records above.