TFV12 rebuildable vape tank grub/set screws screw size
M2 / M2.5 · 3 mm long
The screws used on TFV12 rebuildable vape tank grub/set screws are M2 and M2.5, 3 mm long.
There are 2 separate fitment records for it, including vape screw-size guide states the TFV12 RBA build-deck grub screws are debated between M2.5 (M2) and vape screw-size article states 'some sources stating the size is M2.5 x 3mm' for TFV12 RBA (M2.5).
Head and drive, as the sources state them: set screw (headless) head.
0 of the 2 records are marked confirmed, drawn from 1 source (shuntool.com).
For reference, M2 is 2 mm across the threads at 0.4 mm pitch. The imperial size people confuse it with: #2-56 UNC (2.18 mm) is close but not interchangeable.
TFV12 rebuildable vape tank grub/set screws 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 | 3 mm | 0.4 mm | Set screw (headless) | not stated | Vape screw-size guide states the TFV12 RBA build-deck grub screws are debated between M2.5 x 3mm and M2.0, i.e. M2 reported as one commonly cited size for this atomizer | Reported |
| M2.5 | 3 mm | 0.45 mm | Set screw (headless) | not stated | Vape screw-size article states 'some sources stating the size is M2.5 x 3mm' for TFV12 RBA build deck grub screws | Reported |
Fitment records and sources
Vape screw-size guide states the TFV12 RBA build-deck grub screws are debated between M2.5 x 3mm and M2.0, i.e. M2 reported as one commonly cited size for this atomizer
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Vape screw-size article states 'some sources stating the size is M2.5 x 3mm' for TFV12 RBA build deck grub screws
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 screw measures about 2 mm with calipers (usually a hair under). This device also uses M2.5, so measure each screw rather than assuming they match.
- Pitch: 0.4 mm from one thread crest to the next (25 crests per centimetre). A thread pitch gauge or the pitch-gauge tool settles it in seconds.
- Length: for set screw (headless) screws, measure from under the head to the tip (countersunk heads are the exception: they are measured overall).
- The record states 3 mm. Going longer risks bottoming out or touching parts behind the hole; going shorter loses thread engagement.
- Driver: the source does not name the drive. Standard M2 heads take PH0 for Phillips and T6 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 M2 is about 25-40 N·cm into metal threads and 12-20 N·cm into plastic bosses; snug it up and stop.
Common mix-ups with M2 / M2.5
- 'M2x3 T5' is commonly conflated with the Torx bit size (T5) — the T5 refers to the drive, M2x3 is the actual metric thread and length.
- 'M2' is sometimes used loosely by resellers to mean 'roughly 2mm' without a real ISO metric thread; only counted here when the source datasheet explicitly states 'M2' thread.
- Commonly confused with imperial 4-40 screws in older medical equipment, but modern GE/Mindray devices explicitly list M2.5 metric threads.
- M2.5 and M3 look the same to the naked eye — you need calipers on the shank to tell them apart.
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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More in Other Equipment
The same screw also fits
Devices whose records share a thread with TFV12 rebuildable vape tank grub/set screws, closest length match first.
- M.2 heatsink / shield assemblies also M2 × 3 mm
- Nintendo Switch battery shield also M2 × 3 mm
- ASUS / MSI / Gigabyte / ASRock motherboards also M2 × 3 mm
- Dell Latitude 5411 also M2.5 × 3 mm
- Dell XPS 13 9350 / 9360 / 9365 also M2 × 3 mm
- Nintendo Switch also M2 × 3 mm
- PS5 DualSense controller also M2 × 3 mm
- Dell XPS 15 9575 2-in-1 also M2 × 3 mm
Questions about TFV12 rebuildable vape tank grub/set screws screws
- What size screw does TFV12 rebuildable vape tank grub/set screws use?
- M2 × 3 mm for vape screw-size guide states the TFV12 RBA build-deck grub screws are debated between M2.5 x 3mm and M2.0, i.e. M2 reported as one commonly cited size for this atomizer; M2.5 × 3 mm for vape screw-size article states 'some sources stating the size is M2.5 x 3mm' for TFV12 RBA build deck grub screws.
- How long are the screws in TFV12 rebuildable vape tank grub/set screws?
- The record gives 3 mm. Measure the original from under the head (overall for a countersunk head) to confirm before ordering.
- What is the thread pitch of an M2 screw?
- 0.4 mm (coarse), which is the standard pitch for M2 machine screws; a 0.25 mm fine pitch exists but is uncommon. The tap drill is 1.6 mm and the normal clearance hole is 2.4 mm.
- What screwdriver do I need for TFV12 rebuildable vape tank grub/set screws?
- The sources do not name the drive. For M2, Phillips heads normally take PH0 and Torx heads T6; socket heads take a 1.5 mm hex key.
- Can I use an imperial screw instead of M2?
- No. Imperial look-alike: #2-56 UNC (2.18 mm) is close but not interchangeable. Use a true M2 screw so it does not cross-thread or strip the hole.
- Where can I buy replacement screws for TFV12 rebuildable vape tank grub/set screws?
- TechSpareWarehouse (our own store) lists M2 x 3mm and M2.5 x 3mm, which match lengths in the records above.