Interchangeable pendant clasp screw system screw size
M2.5 · 4 mm long
Our records put Interchangeable pendant clasp screw system on M2.5 screws, 4 mm long.
The record covers jewelry pendant explicitly stated as designed 'for M2.5 screw interchangeable system' with 'The M2.5 thread is 4mm long'.
This entry is marked confirmed and comes from beachbuggy.at.
M2.5 means a 2.5 mm nominal diameter with a 0.45 mm thread pitch. 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.
Interchangeable pendant clasp screw system 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 | 4 mm | 0.45 mm | not stated | not stated | Jewelry pendant explicitly stated as designed 'for M2.5 screw interchangeable system' with 'The M2.5 thread is 4mm long' | Confirmed |
Fitment records and sources
Jewelry pendant explicitly stated as designed 'for M2.5 screw interchangeable system' with 'The M2.5 thread is 4mm long'
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
How to check the screw before you buy
- Over-long screws in phones are a known cause of damaged boards (Apple's 'long screw damage'), so never swap positions.
- 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 record states 4 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 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
- Commonly confused with imperial 4-40 screws in older medical equipment, but modern GE/Mindray devices explicitly list M2.5 metric threads.
- 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 4mm Screws for Lenovo IdeaPad 5 Pro 14 Display Hinge 10-Pack Black
$4.99 -
M2.5 x 4mm Screws for Lenovo IdeaPad 5 Pro 14 System Board Hinge 10-Pack Black
$4.99
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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
$0.10Choose size -
M2 x 2.5mm, M2 x 5mm, M2.5 x 4mm Phillips Wafer Head Screws Sold Individually – Black
$0.10Choose size
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Devices whose records share a thread with Interchangeable pendant clasp screw system, closest length match first.
- Acer Aspire 4930G also M2.5 × 4 mm
- HP Compaq Presario R3000 also M2.5 × 4 mm
- Lenovo ThinkPad S230u also M2.5 × 4 mm
- Lenovo ThinkPad T16 Gen 1 also M2.5 × 4 mm
- HP ProBook 450 G3 also M2.5 × 4 mm
- HP ProBook 450 G2 also M2.5 × 4 mm
- HP Compaq NX6120 also M2.5 × 4 mm
- Lenovo ideapad 300-15ISK also M2.5 × 4 mm
Questions about Interchangeable pendant clasp screw system screws
- What size screw does Interchangeable pendant clasp screw system use?
- M2.5 × 4 mm for jewelry pendant explicitly stated as designed 'for M2.5 screw interchangeable system' with 'The M2.5 thread is 4mm long'.
- How long are the screws in Interchangeable pendant clasp screw system?
- The record gives 4 mm. Measure the original from under the head (overall for a countersunk head) to confirm before ordering.
- 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 Interchangeable pendant clasp screw system?
- 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 Interchangeable pendant clasp screw system?
- TechSpareWarehouse (our own store) lists M2.5 x 4mm, which matches the length in the records above.