Olympus flexible endoscope (160-290 series) control-body stiffness adjuster screw size
M2.5 · 3 mm long
Our records put Olympus flexible endoscope (160-290 series) control-body stiffness adjuster on M2.5 screws, 3 mm long.
Where it is used: panhead screw M2.0 x 3.0mm is JCIS-standard, but a separate reparts.eu listing explicitly ties an M2.5 range screw to endoscope control-body components (confirms M2/M2.5-class fasteners used in Olympus endoscope repair).
Head and drive, as the source states them: pan head.
This entry is marked reported and comes from reparts.eu.
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.
Olympus flexible endoscope (160-290 series) control-body stiffness adjuster 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 | 3 mm | 0.45 mm | Pan head | not stated | Panhead screw M2.0 x 3.0mm is JCIS-standard, but a separate reparts.eu listing explicitly ties an M2.5 range screw to endoscope control-body components (confirms M2/M2.5-class fasteners used in Olympus endoscope repair) | Reported |
Fitment records and sources
Panhead screw M2.0 x 3.0mm is JCIS-standard, but a separate reparts.eu listing explicitly ties an M2.5 range screw to endoscope control-body components (confirms M2/M2.5-class fasteners used in Olympus endoscope repair)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
How to check the screw before you buy
- Keep material and finish the same as the original (often stainless) on equipment that is cleaned or sterilised.
- 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: for pan head screws, measure from under the head to the tip (countersunk heads are the exception: they are measured overall).
- The record states 3 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.
More in Medical & Laboratory
The same screw also fits
Devices whose records share a thread with Olympus flexible endoscope (160-290 series) control-body stiffness adjuster, closest length match first.
- HP 14 14-f2000 (= 14-fq2000) also M2.5 × 3 mm
- Toshiba Portege M200 also M2.5 × 3 mm
- HP nx7000 also M2.5 × 3 mm
- Toshiba Satellite M50 also M2.5 × 3 mm
- Acer Aspire 4935 also M2.5 × 3 mm
- Dell Vostro 15 7580 also M2.5 × 3 mm
- Acer Aspire 4930 also M2.5 × 3 mm
- Lenovo ThinkPad 770E also M2.5 × 3 mm
Questions about Olympus flexible endoscope (160-290 series) control-body stiffness adjuster screws
- What size screw does Olympus flexible endoscope (160-290 series) control-body stiffness adjuster use?
- M2.5 × 3 mm for panhead screw M2.0 x 3.0mm is JCIS-standard, but a separate reparts.eu listing explicitly ties an M2.5 range screw to endoscope control-body components (confirms M2/M2.5-class fasteners used in Olympus endoscope repair).
- How long are the screws in Olympus flexible endoscope (160-290 series) control-body stiffness adjuster?
- The record gives 3 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 Olympus flexible endoscope (160-290 series) control-body stiffness adjuster?
- 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 Olympus flexible endoscope (160-290 series) control-body stiffness adjuster?
- TechSpareWarehouse (our own store) lists M2.5 x 3mm, which matches the length in the records above.