How long are the screws in Apple Watch strap adapter?

The records range from 1.2 to 2 mm depending on the position, so match each screw to its own hole.

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 Apple Watch strap adapter?

The source lists a Pentalobe drive. Standard M1.2 heads otherwise take PH000 / JIS 00 (Phillips) or T1–T2 (Torx).

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.

Where can I buy replacement screws for Apple Watch strap adapter?

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

Apple Watch strap adapter screw size

M1.2 · 1.2 to 2 mm long

The screws used on Apple Watch strap adapter are M1.2 in lengths from 1.2 to 2 mm.

Where it is used: pentalobe strap adapter screws measured by users at roughly M1.2.

Head and drive, as the source states them: Pentalobe drive.

This entry is marked reported and comes from discussions.apple.com.

M1.2 means a 1.2 mm nominal diameter with a 0.25 mm thread pitch. Imperial look-alike: #0-80 UNF (1.52 mm) is the closest imperial screw, but it is bigger — not a substitute.

Apple Watch strap adapter 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	1.2–2 mm	0.25 mm	not stated	Pentalobe	Pentalobe strap adapter screws measured by users at roughly M1.2	Reported

Fitment records and sources

M1.21.2-2mmreported

Pentalobe strap adapter screws measured by users at roughly M1.2

pitch 0.25 mm · tap 0.95 mm · clearance 1.4 mm · PH000 / JIS 00 / Torx T1–T2

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 M1.2 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.
The records span 1.2–2 mm, which means different positions take different lengths — match each hole to its own screw.
Driver: the source names a Pentalobe drive. For comparison, standard M1.2 heads take PH000 / JIS 00 (Phillips) or T1–T2 (Torx).
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.

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 Apple Watch strap adapter, closest length match first.

Samsung Galaxy S24 also M1.2 × 2 mm
Watch dial foot / movement ring also M1.2 × 1.2–2 mm
Smartphone antenna clips (some OEMs) also M1.2 × 1.5–2 mm
Watch casebacks & bracelet links also M1.2 × 1.5–2 mm
Valve Steam Deck (LCD) also M1.2 × 2 mm
Watch case back screw (small cases) also M1.2 × 1.7 mm
Steam Deck (LCD) Type 8 fastener also M1.2 × 2 mm
Watch strap keepers also M1.2 × 2 mm

Questions about Apple Watch strap adapter screws

What size screw does Apple Watch strap adapter use?: M1.2 × 1.2–2 mm for pentalobe strap adapter screws measured by users at roughly M1.2.
How long are the screws in Apple Watch strap adapter?: The records range from 1.2 to 2 mm depending on the position, so match each screw to its own hole.
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 Apple Watch strap adapter?: The source lists a Pentalobe drive. Standard M1.2 heads otherwise take PH000 / JIS 00 (Phillips) or T1–T2 (Torx).
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.
Where can I buy replacement screws for Apple Watch strap adapter?: TechSpareWarehouse (our own store) lists M1.2 x 2mm, which matches the length in the records above.

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