ASUS ROG bottom case and heatsink screw size
M2.5 · 5 to 6 mm long
Our records put ASUS ROG bottom case and heatsink on M2.5 screws in lengths from 5 to 6 mm.
It is listed for gaming chassis cover and cooling shroud.
This entry is marked reported and comes from asus.com.
For reference, M2.5 is 2.5 mm across the threads at 0.45 mm pitch. The imperial size people confuse it with: #3-48 / #4-40 (2.51 / 2.84 mm) — #4-40 is the common US stand-in and it will NOT thread in.
ASUS ROG bottom case and heatsink 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 |
|---|---|---|---|---|---|---|
| M2.5 | 5–6 mm | 0.45 mm | not stated | not stated | gaming chassis cover and cooling shroud | Reported |
Fitment records and sources
gaming chassis cover and cooling shroud
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
How to check the screw before you buy
- A screw that is even 1 mm too long in a laptop base can push into the keyboard, battery or a board trace, so match the length position by position.
- Diameter: across the threads an M2.5 screw measures about 2.5 mm with calipers (usually a hair under). If yours measures noticeably more or less, it is a different thread.
- Pitch: 0.45 mm from one thread crest to the next (22.22 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 5–6 mm, which means different positions take different lengths — match each hole to its own screw.
- Driver: the source does not name the drive. Standard M2.5 heads take PH1 for Phillips and T8 for Torx, and a 2 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 M2.5 is about 45-70 N·cm into metal threads and 20-35 N·cm into plastic bosses; snug it up and stop.
Common mix-ups with M2.5
- M2.5 and M3 look the same to the naked eye — you need calipers on the shank to tell them apart.
- M2.5 pitch is 0.45mm vs M3's 0.5mm and M2's 0.4mm — forcing the wrong one strips plastic bosses instantly.
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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M2.5 x 5mm Screws Compatible with Dell XPS 14 9440 Display Assembly 10-Pack
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M2.5 x 5mm Phillips Wafer Head Screw for Action Camera Protective Housing - Pack of 50 Black
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M2.5 x 6mm Laptop Motherboard Replacement Screws Wafer Head 10-Pack Black
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10x M2.5 x 6mm Phillips Screws for Lenovo ThinkPad X131e Chromebook LCD Hinge
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Dell Inspiron 15 3520 Replacement Screws Sold Individually – M2 x 3mm, M2 x 5mm, M2.5 x 5mm, M3 x 3mm Phillips Wafer Head, Black
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Dell Latitude 5430 Replacement Screws Sold Individually – M2 x 2.5mm, M2 x 3mm, M2 x 5mm, M2.5 x 5mm Phillips Wafer Head, Black
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ASUS ROG Strix G15 G513R Replacement Screws Sold Individually – M1.6 x 3mm, M2 x 2.5mm, M2 x 3mm, M2.5 x 6mm Phillips Wafer Head, Black
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ASUS ROG Strix G17 G713 Replacement Screws Sold Individually – M1.6 x 3mm, M2 x 2.5mm, M2 x 3mm, M2.5 x 6mm Phillips Wafer Head, Black
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Browse all 2799 in Laptops & PCs →The same screw also fits
Devices whose records share a thread with ASUS ROG bottom case and heatsink, closest length match first.
- HP ENVY x360 15-w2xx also M2.5 × 5 mm
- Dell Precision 5680 also M2.5 × 5 mm
- Acer TravelMate 5520 also M2.5 × 5 mm
- Lenovo ThinkPad X200 Tablet also M2.5 × 6 mm
- Lenovo K14 Gen 1 also M2.5 × 5 mm
- Dell Vostro 15 3515 also M2.5 × 5 mm
- HP Pavilion DV8200 also M2.5 × 6 mm
- Dell Vostro 15 3501 also M2.5 × 5 mm
Questions about ASUS ROG bottom case and heatsink screws
- What size screw does ASUS ROG bottom case and heatsink use?
- M2.5 × 5–6 mm for gaming chassis cover and cooling shroud.
- How long are the screws in ASUS ROG bottom case and heatsink?
- The records range from 5 to 6 mm depending on the position, so match each screw to its own hole.
- What is the thread pitch of an M2.5 screw?
- 0.45 mm (coarse), which is the standard pitch for M2.5 machine screws; a 0.35 mm fine pitch exists but is uncommon. The tap drill is 2.05 mm and the normal clearance hole is 2.9 mm.
- What screwdriver do I need for ASUS ROG bottom case and heatsink?
- The sources do not name the drive. For M2.5, Phillips heads normally take PH1 and Torx heads T8; socket heads take a 2 mm hex key.
- Can I use an imperial screw instead of M2.5?
- No. Imperial look-alike: #3-48 / #4-40 (2.51 / 2.84 mm) — #4-40 is the common US stand-in and it will NOT thread in. Use a true M2.5 screw so it does not cross-thread or strip the hole.
- Where can I buy replacement screws for ASUS ROG bottom case and heatsink?
- TechSpareWarehouse (our own store) lists M2.5 x 5mm and M2.5 x 6mm, which match lengths in the records above.