Sony 877 screw size
M2 · 3 to 4 mm long
Sony 877 takes M2 metric screws in lengths from 3 to 4 mm.
There are 3 separate fitment records for it, including memory (gold) (M2), hinge (black) (M2) and unspecified (M2).
3 of the 3 records are marked confirmed, drawn from 1 source (tim.id.au).
An M2 screw is 2 mm in diameter with a 0.4 mm pitch, tapped with a 1.6 mm drill; imperial look-alike: #2-56 UNC (2.18 mm) is close but not interchangeable.
Sony 877 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 | 3 mm | 0.4 mm | not stated | not stated | Memory (gold) | Confirmed |
| M2 | 4 mm | 0.4 mm | not stated | not stated | Hinge (black)black finish | Confirmed |
| M2 | 4 mm | 0.4 mm | not stated | not stated | Unspecified | Confirmed |
Fitment records and sources
Memory (gold)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Hinge (black)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Unspecified
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
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 screw measures about 2 mm with calipers (usually a hair under). If yours measures noticeably more or less, it is a different thread.
- Pitch: 0.4 mm from one thread crest to the next (25 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 3–4 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 heads take PH0 for Phillips and T6 for Torx, and a 1.5 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 is about 25-40 N·cm into metal threads and 12-20 N·cm into plastic bosses; snug it up and stop.
Common mix-ups with M2
- The standard M.2 SSD screw is M2 x 3mm, but some laptops and handhelds use non-standard lengths or head shapes.
- M2 (2.00mm, 0.4mm pitch) is NOT the same as #2-56 UNC (2.18mm) — close enough to cross-thread and strip if forced.
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 x 4mm Screws for Dell Latitude 5530 SSD Type-C Bracket 10-Pack 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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HP EliteBook 840 G8 Replacement Screws Sold Individually – M1.6 x 3mm, M2 x 2.5mm, M2 x 4mm, M2.5 x 4mm Phillips Wafer Head, Black
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Devices whose records share a thread with Sony 877, closest length match first.
- Dell Latitude C610 also M2 × 3 mm
- Lenovo V110-14AST also M2 × 3 mm
- Dell Inspiron 13 5301 also M2 × 3 mm
- Lenovo ThinkPad T410 base cover screws also M2 × 3 mm
- Acer TravelMate 4720 also M2 × 3 mm
- Dell Inspiron 14 7467 also M2 × 3 mm
- Acer Aspire 1310 also M2 × 3 mm
- Lenovo ThinkPad R490 also M2 × 3 mm
Questions about Sony 877 screws
- What size screw does Sony 877 use?
- M2 × 3 mm for memory (gold); M2 × 4 mm for hinge (black); M2 × 4 mm for unspecified.
- How long are the screws in Sony 877?
- The records range from 3 to 4 mm depending on the position, so match each screw to its own hole.
- What is the thread pitch of an M2 screw?
- 0.4 mm (coarse), which is the standard pitch for M2 machine screws; a 0.25 mm fine pitch exists but is uncommon. The tap drill is 1.6 mm and the normal clearance hole is 2.4 mm.
- What screwdriver do I need for Sony 877?
- The sources do not name the drive. For M2, Phillips heads normally take PH0 and Torx heads T6; socket heads take a 1.5 mm hex key.
- Can I use an imperial screw instead of M2?
- No. Imperial look-alike: #2-56 UNC (2.18 mm) is close but not interchangeable. Use a true M2 screw so it does not cross-thread or strip the hole.
- Where can I buy replacement screws for Sony 877?
- TechSpareWarehouse (our own store) lists M2 x 3mm and M2 x 4mm, which match lengths in the records above.