Microphone array holder screws (GRAS 6-unit mic array holder) screw size
M3 · length not stated in the sources
Microphone array holder screws (GRAS 6-unit mic array holder) takes M3 metric screws. None of the sources we found gives an exact length, so measure the original before you order.
It is listed for RA0245 microphone holder assembly includes '1 x Screw 3 mm' for mounting quarter-inch mic capsule holder; instruction manual labels part explicitly as 'Screw 3 mm'.
This entry is marked reported and comes from grasacoustics.com.
M3 means a 3 mm nominal diameter with a 0.5 mm thread pitch. Imperial look-alike: #5-40 (3.18 mm) or #4-40 — neither interchanges with M3.
Microphone array holder screws (GRAS 6-unit mic array holder) 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 | not stated | 0.5 mm | not stated | not stated | RA0245 microphone holder assembly includes '1 x Screw 3 mm' for mounting quarter-inch mic capsule holder; instruction manual labels part explicitly as 'Screw 3 mm' | Reported |
Fitment records and sources
RA0245 microphone holder assembly includes '1 x Screw 3 mm' for mounting quarter-inch mic capsule holder; instruction manual labels part explicitly as 'Screw 3 mm'
pitch 0.5 mm · tap 2.5 mm · clearance 3.4 mm · PH1 / Torx T10
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 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.
- 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
- Sonos speakers mix lengths within one unit — M3 for driver housings, M2.5 at the control panel. Keep them sorted during teardown.
- Pond/aquarium equipment manuals aimed at consumers rarely specify exact thread pitch or length for internal fasteners, since these are considered non-user-serviceable; distributor-level assembly/service manuals (e.g., Maytronics internal documents) are a better source than end-user guides.
More in Phones, Tablets & Wearables
The same screw also fits
Devices whose records share a thread with Microphone array holder screws (GRAS 6-unit mic array holder), closest length match first.
- Xbox Series X PSU bracket also M3
- PlayStation 5 disc drive and shell also M3
- Video doorbell lens bezel also M3
- Akuvox A08 video doorbell (back plate) also M3
- Smart home sensor brackets also M3
- Xbox Series S internal chassis also M3
- Xbox One S internal drive caddy also M3
- CELLINK/BICO BIO X Thermoplastic Printhead also M3
Questions about Microphone array holder screws (GRAS 6-unit mic array holder) screws
- What size screw does Microphone array holder screws (GRAS 6-unit mic array holder) use?
- M3 for RA0245 microphone holder assembly includes '1 x Screw 3 mm' for mounting quarter-inch mic capsule holder; instruction manual labels part explicitly as 'Screw 3 mm'.
- How long are the screws in Microphone array holder screws (GRAS 6-unit mic array holder)?
- 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 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 Microphone array holder screws (GRAS 6-unit mic array holder)?
- 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.