Eyeglasses/sunglasses hinge screw screw size
M1.4 · 4 mm long
The screws used on Eyeglasses/sunglasses hinge screw are M1.4, 4 mm long.
It is listed for glasses hinge screw explicitly sold as 2.0mm head x 1.4mm diameter x 4.0mm length, sized for eyewear hinges.
This entry is marked confirmed and comes from opticalproductsonline.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.
Eyeglasses/sunglasses hinge screw 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 | 4 mm | 0.3 mm | not stated | not stated | Glasses hinge screw explicitly sold as 2.0mm head x 1.4mm diameter x 4.0mm length, sized for eyewear hinges | Confirmed |
Fitment records and sources
Glasses hinge screw explicitly sold as 2.0mm head x 1.4mm diameter x 4.0mm length, sized for eyewear hinges
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
- Phone and wearable screws are tiny and often differ by fractions of a millimetre between positions; keep each one next to the hole it came from.
- 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 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 M1.4 heads take PH000 / PH00 for Phillips and T2–T3 for Torx, and a 1.3 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 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
- Eyewear screws are named thread x shaft x length, a different convention from ISO metric naming — easy to order wrong.
- Sellers often list only thread diameter, so an M1.4x3 drone screw and an M1.4x2.3 phone screw look like the same product.
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 Phones, Tablets & Wearables
The same screw also fits
Devices whose records share a thread with Eyeglasses/sunglasses hinge screw, closest length match first.
- Fairphone 4 internal screws also M1.4 × 4 mm
- Miniature precision instrument screws (NBK) also M1.4 × 4 mm
- Fairphone 3 internal screws also M1.4 × 4 mm
- Fairphone 2 / 3 / 4 internal screws also M1.4 × 4 mm
- Watch casebacks & dials also M1.4 × 4 mm
- Samsung Galaxy Watch 3 (45mm) screw also M1.4 × 4 mm
- Universal eyeglass hinge screw (2.0mm head) also M1.4 × 4 mm
- Miniature plastic machine screw (RENY) marketed for micro-precision assemblies including hearing-aid-scale hardware also M1.4 × 4 mm
Questions about Eyeglasses/sunglasses hinge screw screws
- What size screw does Eyeglasses/sunglasses hinge screw use?
- M1.4 × 4 mm for glasses hinge screw explicitly sold as 2.0mm head x 1.4mm diameter x 4.0mm length, sized for eyewear hinges.
- How long are the screws in Eyeglasses/sunglasses hinge screw?
- 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 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 Eyeglasses/sunglasses hinge screw?
- The sources do not name the drive. For M1.4, Phillips heads normally take PH000 / PH00 and Torx heads T2–T3; socket heads take 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.