Eyewire/optical and precision-instrument screws (representative of hearing aid / camera size class) screw size
M1.4 · 3.5 to 6.8 mm long
The screws used on Eyewire/optical and precision-instrument screws (representative of hearing aid / camera size class) are M1.4 in lengths from 3.5 to 6.8 mm.
It is listed for tabco Optical catalog lists numerous Phillips M1.4 (1.4mm) thread screws with 2.0mm head diameter and lengths from 3.5mm to 6.8mm, stainless steel, used in eyewire/precision assemblies.
Head and drive, as the source states them: Phillips drive.
This entry is marked confirmed and comes from tabcooptical.com.
For reference, M1.4 is 1.4 mm across the threads at 0.3 mm pitch. The imperial size people confuse it with: #0-80 UNF (1.52 mm) — close in diameter, different pitch, do not mix.
Eyewire/optical and precision-instrument screws (representative of hearing aid / camera size class) 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 |
|---|---|---|---|---|---|---|
| M1.4 | 3.5–6.8 mm | 0.3 mm | not stated | Phillips | Tabco Optical catalog lists numerous Phillips M1.4 (1.4mm) thread screws with 2.0mm head diameter and lengths from 3.5mm to 6.8mm, stainless steel, used in eyewire/precision assembliesstainless | Confirmed |
Fitment records and sources
Tabco Optical catalog lists numerous Phillips M1.4 (1.4mm) thread screws with 2.0mm head diameter and lengths from 3.5mm to 6.8mm, stainless steel, used in eyewire/precision assemblies
pitch 0.3 mm · tap 1.1 mm · clearance 1.6 mm · PH000 / PH00 / Torx T2–T3
How to check the screw before you buy
- Camera and optics hardware often uses short screws into thin threaded plates, so check engagement before tightening fully.
- Diameter: across the threads an M1.4 screw measures about 1.4 mm with calipers (usually a hair under). If yours measures noticeably more or less, it is a different thread.
- Pitch: 0.3 mm from one thread crest to the next (33.33 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 3.5–6.8 mm, which means different positions take different lengths — match each hole to its own screw.
- Driver: the source names a Phillips drive. For comparison, standard M1.4 heads take PH000 / PH00 (Phillips) or T2–T3 (Torx), or a 1.3 mm hex key.
- Tightening: no device-specific torque is published in these records. The site's general figure for M1.4 is about 8-12 N·cm into metal threads and 4-7 N·cm into plastic bosses; snug it up and stop.
Common mix-ups with M1.4
- Sellers often list only thread diameter, so an M1.4x3 drone screw and an M1.4x2.3 phone screw look like the same product.
- Phone guides describe screws by Torx bit size (T3/T4/T5) rather than thread; M1.4-M1.6 is inferred from shaft diameter, not stated by the maker.
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 Cameras & Optics
The same screw also fits
Devices whose records share a thread with Eyewire/optical and precision-instrument screws (representative of hearing aid / camera size class), closest length match first.
- Compact & action cameras also M1.4 × 3.5–4 mm
- Universal eyeglass hinge screw (2.0mm head) also M1.4 × 4 mm
- Camera lens/body low-profile 'JIS Micro Profile' fastener also M1.4 × 4 mm
- Eyeglass hinge / eyewire screw also M1.4 × 3.8 mm
- Oakley O Matter / steel frame hinge also M1.4 × 3.5–4 mm
- Self-aligning spring hinge screw (Tabco Optical) also M1.4 × 6.1–6.8 mm
- Binocular hinge / bridge also M1.4 × 3.5–6.8 mm
- Eyeglass hinge screw (the most common size) also M1.4 × 3.5–5 mm
Questions about Eyewire/optical and precision-instrument screws (representative of hearing aid / camera size class) screws
- What size screw does Eyewire/optical and precision-instrument screws (representative of hearing aid / camera size class) use?
- M1.4 × 3.5–6.8 mm for tabco Optical catalog lists numerous Phillips M1.4 (1.4mm) thread screws with 2.0mm head diameter and lengths from 3.5mm to 6.8mm, stainless steel, used in eyewire/precision assemblies.
- How long are the screws in Eyewire/optical and precision-instrument screws (representative of hearing aid / camera size class)?
- The records range from 3.5 to 6.8 mm depending on the position, so match each screw to its own hole.
- What is the thread pitch of an M1.4 screw?
- 0.3 mm (coarse), which is the standard pitch for M1.4 machine screws. The tap drill is 1.1 mm and the normal clearance hole is 1.6 mm.
- What screwdriver do I need for Eyewire/optical and precision-instrument screws (representative of hearing aid / camera size class)?
- The source lists a Phillips drive. Standard M1.4 heads otherwise take PH000 / PH00 (Phillips) or T2–T3 (Torx), or a 1.3 mm hex key.
- Can I use an imperial screw instead of M1.4?
- No. Imperial look-alike: #0-80 UNF (1.52 mm) — close in diameter, different pitch, do not mix. Use a true M1.4 screw so it does not cross-thread or strip the hole.