What size screw does Compact smart sensor PCBs use?

M1.6 × 3–5 mm for internal PCB mounting inside small sensors.

How long are the screws in Compact smart sensor PCBs?

The records range from 3 to 5 mm depending on the position, so match each screw to its own hole.

What is the thread pitch of an M1.6 screw?

0.35 mm (coarse), which is the standard pitch for M1.6 machine screws; a 0.2 mm fine pitch exists but is uncommon. The tap drill is 1.25 mm and the normal clearance hole is 1.8 mm.

What screwdriver do I need for Compact smart sensor PCBs?

The sources do not name the drive. For M1.6, Phillips heads normally take PH00 and Torx heads T4–T5; socket heads take a 1.5 mm hex key.

Can I use an imperial screw instead of M1.6?

No. Imperial look-alike: #1-72 UNF (1.85 mm) is larger; there is no true imperial equivalent. Use a true M1.6 screw so it does not cross-thread or strip the hole.

Where can I buy replacement screws for Compact smart sensor PCBs?

TechSpareWarehouse (our own store) lists M1.6 x 3mm and M1.6 x 4mm, which match lengths in the records above.

Compact smart sensor PCBs screw size

M1.6 · 3 to 5 mm long

The screws used on Compact smart sensor PCBs are M1.6 in lengths from 3 to 5 mm.

It is listed for internal PCB mounting inside small sensors.

This entry is marked reported.

An M1.6 screw is 1.6 mm in diameter with a 0.35 mm pitch, tapped with a 1.25 mm drill; imperial look-alike: #1-72 UNF (1.85 mm) is larger; there is no true imperial equivalent.

Compact smart sensor PCBs 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
M1.6	3–5 mm	0.35 mm	not stated	not stated	Internal PCB mounting inside small sensors	Reported

Fitment records and sources

M1.63-5mmreported

Internal PCB mounting inside small sensors

pitch 0.35 mm · tap 1.25 mm · clearance 1.8 mm · PH00 / Torx T4–T5

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 M1.6 screw measures about 1.6 mm with calipers (usually a hair under). If yours measures noticeably more or less, it is a different thread.
Pitch: 0.35 mm from one thread crest to the next (28.57 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 mm, which means different positions take different lengths — match each hole to its own screw.
Driver: the source does not name the drive. Standard M1.6 heads take PH00 for Phillips and T4–T5 for Torx, and a 1.5 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 M1.6 is about 12-20 N·cm into metal threads and 6-10 N·cm into plastic bosses; snug it up and stop.

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 Compact smart sensor PCBs, closest length match first.

iPad Pro 11-inch internal brackets also M1.6 × 3–4 mm
Valve Steam Deck (LCD) also M1.6 × 3–5 mm
Watch bracelets & casebacks also M1.6 × 3–4 mm
Steam Deck (LCD) Type 5 fastener also M1.6 × 3 mm
Steam Deck (LCD) Type 7 fastener also M1.6 × 4 mm
Steam Deck inner backplate screws also M1.6 × 5 mm
iPad Mini 5 internal brackets also M1.6 × 3 mm
Dive watch bezels also M1.6 × 3 mm

Questions about Compact smart sensor PCBs screws

What size screw does Compact smart sensor PCBs use?: M1.6 × 3–5 mm for internal PCB mounting inside small sensors.
How long are the screws in Compact smart sensor PCBs?: The records range from 3 to 5 mm depending on the position, so match each screw to its own hole.
What is the thread pitch of an M1.6 screw?: 0.35 mm (coarse), which is the standard pitch for M1.6 machine screws; a 0.2 mm fine pitch exists but is uncommon. The tap drill is 1.25 mm and the normal clearance hole is 1.8 mm.
What screwdriver do I need for Compact smart sensor PCBs?: The sources do not name the drive. For M1.6, Phillips heads normally take PH00 and Torx heads T4–T5; socket heads take a 1.5 mm hex key.
Can I use an imperial screw instead of M1.6?: No. Imperial look-alike: #1-72 UNF (1.85 mm) is larger; there is no true imperial equivalent. Use a true M1.6 screw so it does not cross-thread or strip the hole.
Where can I buy replacement screws for Compact smart sensor PCBs?: TechSpareWarehouse (our own store) lists M1.6 x 3mm and M1.6 x 4mm, which match lengths in the records above.

Heads up: shipping delay