Watch case micro screw (Nylok) screw size
M1.2 · length not stated in the sources
Our records put Watch case micro screw (Nylok) on M1.2 screws. None of the sources we found gives an exact length, so measure the original before you order.
It is listed for carbon steel micro watch M1.2 Nylok screw listing.
This entry is marked likely and comes from fuhengtai.lovemaju.com.
An M1.2 screw is 1.2 mm in diameter with a 0.25 mm pitch, tapped with a 0.95 mm drill; imperial look-alike: #0-80 UNF (1.52 mm) is the closest imperial screw, but it is bigger — not a substitute.
Watch case micro screw (Nylok) 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 |
|---|---|---|---|---|---|---|
| M1.2 | not stated | 0.25 mm | not stated | not stated | Carbon steel micro watch M1.2 Nylok screw listing | Likely |
Fitment records and sources
Carbon steel micro watch M1.2 Nylok screw listing
pitch 0.25 mm · tap 0.95 mm · clearance 1.4 mm · PH000 / JIS 00 / Torx T1–T2
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 M1.2 screw measures about 1.2 mm with calipers (usually a hair under). If yours measures noticeably more or less, it is a different thread.
- Pitch: 0.25 mm from one thread crest to the next (40 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.
- Driver: the source does not name the drive. Standard M1.2 heads take PH000 / JIS 00 for Phillips and T1–T2 for Torx; 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 M1.2 is about 5-8 N·cm into metal threads and 3-5 N·cm into plastic bosses; snug it up and stop.
Common mix-ups with M1.2
- M1.2 and M1.4 look identical in an eyeglass repair kit — the wrong one strips soft acetate or metal hinges.
More in Phones, Tablets & Wearables
The same screw also fits
Devices whose records share a thread with Watch case micro screw (Nylok), closest length match first.
- Watch casebacks & bracelet links also M1.2
- Watch dial foot / movement ring also M1.2
- Smartphone antenna clips (some OEMs) also M1.2
- Samsung Galaxy S24 also M1.2
- Apple Watch strap adapter also M1.2
- Watch case back screw (small cases) also M1.2
- Watch case-back screw also M1.2
- Valve Steam Deck (LCD) also M1.2
Questions about Watch case micro screw (Nylok) screws
- What size screw does Watch case micro screw (Nylok) use?
- M1.2 for carbon steel micro watch M1.2 Nylok screw listing.
- How long are the screws in Watch case micro screw (Nylok)?
- None of the sources states a length. Remove one screw and measure it from under the head to the tip (overall for a countersunk head).
- What is the thread pitch of an M1.2 screw?
- 0.25 mm (coarse), which is the standard pitch for M1.2 machine screws. The tap drill is 0.95 mm and the normal clearance hole is 1.4 mm.
- What screwdriver do I need for Watch case micro screw (Nylok)?
- The sources do not name the drive. For M1.2, Phillips heads normally take PH000 / JIS 00 and Torx heads T1–T2.
- Can I use an imperial screw instead of M1.2?
- No. Imperial look-alike: #0-80 UNF (1.52 mm) is the closest imperial screw, but it is bigger — not a substitute. Use a true M1.2 screw so it does not cross-thread or strip the hole.