Raspberry Pi 3B / 4B / 5 / Zero 2 standoff kits screw size
M2.5 · 6 to 16 mm long
The screws used on Raspberry Pi 3B / 4B / 5 / Zero 2 standoff kits are M2.5 in lengths from 6 to 16 mm.
The record covers chassis-mount female-female standoffs with screws included.
This entry is marked confirmed and comes from thepihut.com.
An M2.5 screw is 2.5 mm in diameter with a 0.45 mm pitch, tapped with a 2.05 mm drill; imperial look-alike: #3-48 / #4-40 (2.51 / 2.84 mm) — #4-40 is the common US stand-in and it will NOT thread in.
Raspberry Pi 3B / 4B / 5 / Zero 2 standoff kits 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 |
|---|---|---|---|---|---|---|
| M2.5 | 6–16 mm | 0.45 mm | not stated | not stated | chassis-mount female-female standoffs with screws included | Confirmed |
Fitment records and sources
chassis-mount female-female standoffs with screws included
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
How to check the screw before you buy
- Take one original screw out first and measure it before ordering; the record above tells you the thread, the original screw tells you the exact length and head.
- Diameter: across the threads an M2.5 screw measures about 2.5 mm with calipers (usually a hair under). If yours measures noticeably more or less, it is a different thread.
- Pitch: 0.45 mm from one thread crest to the next (22.22 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 M2.5 heads take PH1 for Phillips and T8 for Torx, and a 2 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 M2.5 is about 45-70 N·cm into metal threads and 20-35 N·cm into plastic bosses; snug it up and stop.
Common mix-ups with M2.5
- M2.5 and M3 look the same to the naked eye — you need calipers on the shank to tell them apart.
- M2.5 pitch is 0.45mm vs M3's 0.5mm and M2's 0.4mm — forcing the wrong one strips plastic bosses instantly.
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.
-
M2.5 x 6mm Laptop Motherboard Replacement Screws Wafer Head 10-Pack Black
$4.99 -
10x M2.5 x 6mm Phillips Screws for Lenovo ThinkPad X131e Chromebook LCD Hinge
$4.99
-
M2.5 x 8mm Screws for Retevis RT27 Radio Belt Clip 10-Pack Black Phillips
$4.99 -
M2.5 x 8mm Screws for Raspberry Pi 5 Case and PoE HAT 10-Pack Black
$4.99 -
M2.5 x 10mm Phillips Wafer Head Screw for Turntable Cartridge Headshell Mount - Pack of 50 Black
$5.99 -
M2.5 x 10mm Phillips Wafer Head Screw for ASUS TUF Gaming A15/F15 Laptop Repair - Single Replacement Black
$0.10 each · min. 50
-
M2.5 x 12mm Phillips Wafer Head Screw for Turntable Cartridge Headshell Mount - Pack of 50 Black
$6.49 -
M2.5 x 12mm Phillips Wafer Head Screw for Laptop Bottom Cover Replacement - Single Replacement Black
$0.10 each · min. 50
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Devices whose records share a thread with Raspberry Pi 3B / 4B / 5 / Zero 2 standoff kits, closest length match first.
- Dell Alienware 17 R4 also M2.5 × 13 mm
- Motorola MOTOTRBO CM200d / CM300d mobile radio also M2.5 × 12 mm
- Acer Aspire / Swift also M2.5 × 6 mm
- Motorola MOTOTRBO XPR5350 / XPR5550 mobile radio also M2.5 × 12 mm
- TEKTELIC Kona Photon Gen-2 LoRaWAN gateway also M2.5 × 8 mm
- Raspberry Pi HAT stacking (Pololu / Adafruit) also M2.5 × 6–11 mm
- Backscatter FLIP3.1 underwater flip-frame retaining screw also M2.5 × 10 mm
- Motorola APX 5000 / APX 6000 portable radio also M2.5 × 7–16 mm
Questions about Raspberry Pi 3B / 4B / 5 / Zero 2 standoff kits screws
- What size screw does Raspberry Pi 3B / 4B / 5 / Zero 2 standoff kits use?
- M2.5 × 6–16 mm for chassis-mount female-female standoffs with screws included.
- How long are the screws in Raspberry Pi 3B / 4B / 5 / Zero 2 standoff kits?
- 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 M2.5 screw?
- 0.45 mm (coarse), which is the standard pitch for M2.5 machine screws; a 0.35 mm fine pitch exists but is uncommon. The tap drill is 2.05 mm and the normal clearance hole is 2.9 mm.
- What screwdriver do I need for Raspberry Pi 3B / 4B / 5 / Zero 2 standoff kits?
- The sources do not name the drive. For M2.5, Phillips heads normally take PH1 and Torx heads T8; socket heads take a 2 mm hex key.
- Can I use an imperial screw instead of M2.5?
- No. Imperial look-alike: #3-48 / #4-40 (2.51 / 2.84 mm) — #4-40 is the common US stand-in and it will NOT thread in. Use a true M2.5 screw so it does not cross-thread or strip the hole.
- Where can I buy replacement screws for Raspberry Pi 3B / 4B / 5 / Zero 2 standoff kits?
- TechSpareWarehouse (our own store) lists M2.5 x 6mm, M2.5 x 8mm and M2.5 x 10mm, which match lengths in the records above.