How long are the screws in ResMed VPAP / S8 service hardware?

The records range from 6 to 16 mm depending on the position, so match each screw to its own hole.

What is the thread pitch of an M3 screw?

0.5 mm (coarse), which is the standard pitch for M3 machine screws; a 0.35 mm fine pitch exists but is uncommon. The tap drill is 2.5 mm and the normal clearance hole is 3.4 mm.

What screwdriver do I need for ResMed VPAP / S8 service hardware?

The sources do not name the drive. For M3, Phillips heads normally take PH1 and Torx heads T10; socket heads take a 2.5 mm hex key.

Can I use an imperial screw instead of M3?

No. Imperial look-alike: #5-40 (3.18 mm) or #4-40 — neither interchanges with M3. Use a true M3 screw so it does not cross-thread or strip the hole.

Where can I buy replacement screws for ResMed VPAP / S8 service hardware?

TechSpareWarehouse (our own store) lists M3 x 6mm, M3 x 8mm and M3 x 10mm, which match lengths in the records above.

ResMed VPAP / S8 service hardware screw size

M3 · 6 to 16 mm long

If you are replacing a screw on ResMed VPAP / S8 service hardware, the thread is M3 in lengths from 6 to 16 mm.

It is listed for service manual details internal chassis fasteners.

This entry is marked reported and comes from documents.cdn.ifixit.com.

An M3 screw is 3 mm in diameter with a 0.5 mm pitch, tapped with a 2.5 mm drill; imperial look-alike: #5-40 (3.18 mm) or #4-40 — neither interchanges with M3.

ResMed VPAP / S8 service hardware 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
M3	6–16 mm	0.5 mm	not stated	not stated	Service manual details internal chassis fasteners	Reported

Fitment records and sources

M36-16mmreported

Service manual details internal chassis fasteners

pitch 0.5 mm · tap 2.5 mm · clearance 3.4 mm · PH1 / Torx T10

Source

How to check the screw before you buy

For medical and lab equipment, use the manufacturer's replacement part where one is specified; the thread size here helps identify it, not certify it.
Diameter: across the threads an M3 screw measures about 3 mm with calipers (usually a hair under). If yours measures noticeably more or less, it is a different thread.
Pitch: 0.5 mm from one thread crest to the next (20 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 6–16 mm, which means different positions take different lengths — match each hole to its own screw.
Driver: the source does not name the drive. Standard M3 heads take PH1 for Phillips and T10 for Torx, and a 2.5 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 M3 is about 80-130 N·cm into metal threads and 35-60 N·cm into plastic bosses; snug it up and stop.

Common mix-ups with M3

Thor Zone Nanoq S case mixes metric M3 (various lengths: 4, 5, 6, 10, 13, 20mm) and imperial #6-32 UNC fasteners across the same build, so builders must sort hardware carefully rather than assuming an all-metric kit.
Part numbers can embed a thread code (e.g. ifm fibre fittings with 'M3') that refers to a fitting thread, not a chassis screw.

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 ResMed VPAP / S8 service hardware, closest length match first.

ResMed S9 Elite CPAP chassis also M3 × 8–14 mm
cab XD4T industrial label printer also M3 × 6–10 mm
Kendro / Sorvall Legend T and Multifuge 3S/3L centrifuge also M3 × 8 mm
BMC RESmart CPAP machine also M3 × 10 mm
Kaycee Microfish veterinary tube-feed repeater syringe also M3 × 12 mm
TSC TTP-2610MT / TTP-368MT industrial barcode printer also M3 × 6 mm
TSC MH241 / MH341 / MH641 industrial label printer also M3 × 6–8 mm
Surgical / veterinary instrument handles also M3 × 6–10 mm

Questions about ResMed VPAP / S8 service hardware screws

What size screw does ResMed VPAP / S8 service hardware use?: M3 × 6–16 mm for service manual details internal chassis fasteners.
How long are the screws in ResMed VPAP / S8 service hardware?: The records range from 6 to 16 mm depending on the position, so match each screw to its own hole.
What is the thread pitch of an M3 screw?: 0.5 mm (coarse), which is the standard pitch for M3 machine screws; a 0.35 mm fine pitch exists but is uncommon. The tap drill is 2.5 mm and the normal clearance hole is 3.4 mm.
What screwdriver do I need for ResMed VPAP / S8 service hardware?: The sources do not name the drive. For M3, Phillips heads normally take PH1 and Torx heads T10; socket heads take a 2.5 mm hex key.
Can I use an imperial screw instead of M3?: No. Imperial look-alike: #5-40 (3.18 mm) or #4-40 — neither interchanges with M3. Use a true M3 screw so it does not cross-thread or strip the hole.
Where can I buy replacement screws for ResMed VPAP / S8 service hardware?: TechSpareWarehouse (our own store) lists M3 x 6mm, M3 x 8mm and M3 x 10mm, which match lengths in the records above.

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