How long are the screws in Miniature precision instrument screws (NBK)?

The records range from 2 to 12 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 Miniature precision instrument screws (NBK)?

The source lists a Hex socket (Allen) 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.

Where can I buy replacement screws for Miniature precision instrument screws (NBK)?

TechSpareWarehouse (our own store) lists M1.4 x 2mm, which matches the length in the records above.

Miniature precision instrument screws (NBK) screw size

M1.4 · 2 to 12 mm long

If you are replacing a screw on Miniature precision instrument screws (NBK), the thread is M1.4 in lengths from 2 to 12 mm.

It is listed for catalogue of M1, M1.4, M1.6, M2, M2.5 hex socket screws for precision devices.

Head and drive, as the source states them: Hex socket (Allen) drive.

This entry is marked confirmed and comes from nbk1560.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.

Miniature precision instrument screws (NBK) 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	2–12 mm	0.3 mm	not stated	Hex socket (Allen)	Catalogue of M1, M1.4, M1.6, M2, M2.5 hex socket screws for precision devices	Confirmed

Fitment records and sources

M1.42-12mmconfirmed

Catalogue of M1, M1.4, M1.6, M2, M2.5 hex socket screws for precision devices

pitch 0.3 mm · tap 1.1 mm · clearance 1.6 mm · PH000 / PH00 / Torx T2–T3

Source

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 records span 2–12 mm, which means different positions take different lengths — match each hole to its own screw.
Driver: the source names a Hex socket (Allen) 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

M1.4 is THE Samsung Galaxy internal screw across S, A, M and Note lines — but lengths run 2.3mm to 4mm+ and are not interchangeable between models.

Pitch gauge · Screw size finder · Torque guide

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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The same screw also fits

Devices whose records share a thread with Miniature precision instrument screws (NBK), closest length match first.

Fitbit / fitness band back cover also M1.4 × 2–2.5 mm
Google Pixel 7 rear camera bracket also M1.4 × 2 mm
iPhone 17 Pro internal 'Super Screw' (genuine OEM teardown part) also M1.4 × 2.4 mm
Nintendo Switch Joy-Con also M1.4 × 5 mm
Eyeglass hinge repair screw also M1.4 × 8 mm
Google Pixel 7 motherboard also M1.4 × 2–3 mm
Fairphone 4 internal screws also M1.4 × 3.5–4.5 mm
Eyeglass/precision hinge screws (also used in small electronics/headphone hinges) also M1.4 × 4.8 mm

Questions about Miniature precision instrument screws (NBK) screws

What size screw does Miniature precision instrument screws (NBK) use?: M1.4 × 2–12 mm for catalogue of M1, M1.4, M1.6, M2, M2.5 hex socket screws for precision devices.
How long are the screws in Miniature precision instrument screws (NBK)?: The records range from 2 to 12 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 Miniature precision instrument screws (NBK)?: The source lists a Hex socket (Allen) 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.
Where can I buy replacement screws for Miniature precision instrument screws (NBK)?: TechSpareWarehouse (our own store) lists M1.4 x 2mm, which matches the length in the records above.

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