Vintage radio chassis and dial screws screw size
M2 · 4 to 10 mm long
Our records put Vintage radio chassis and dial screws on M2 screws in lengths from 4 to 10 mm.
Where it is used: chassis, dial and trim screws in restoration work.
This entry is marked reported.
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.
Vintage radio chassis and dial 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 | 4–10 mm | 0.4 mm | not stated | not stated | Chassis, dial and trim screws in restoration work | Reported |
Fitment records and sources
Chassis, dial and trim screws in restoration work
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
How to check the screw before you buy
- Frame and motor screws must not reach the motor windings; check the length against the motor's mounting depth.
- Diameter: across the threads an M2 screw measures about 2 mm with calipers (usually a hair under). If yours measures noticeably more or less, it is a different thread.
- 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: measure from under the head to the tip for pan, button, wafer and cap heads; countersunk (flat) heads are measured overall.
- The records span 4–10 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 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
- Xbox Series X internal chassis screws are M3, not M2 (confirmed on iFixit) — a widespread misconception.
- M2 (2.00mm, 0.4mm pitch) is NOT the same as #2-56 UNC (2.18mm) — close enough to cross-thread and strip if forced.
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 x 4mm Phillips Wafer Head Machine Screws Black 50-Pack Laptop SSD Repair
$4.49 each · min. 2
-
M2 x 4mm Screws for Dell Latitude 5530 SSD Type-C Bracket 10-Pack Black
$4.99
-
M2 x 5mm Replacement Bottom Case Screws for Dell Inspiron 3535 Laptop 10-Pack
$4.99 -
M2 x 5mm Phillips Wafer Head Screw for Dell G16 7630 Gaming Laptop Repair - Pack of 100 Black
$7.99 -
M2 x 6mm Phillips Wafer Head Screw for HP Omen Gaming Laptop Repair - Pack of 100 Black
$7.99 -
M2 x 6mm Phillips Wafer Head Screw for Audiophile Headphone Headband Repair - Pack of 50 Black
$4.99
-
Dell Inspiron 15 3520 Replacement Screws Sold Individually – M2 x 3mm, M2 x 5mm, M2.5 x 5mm, M3 x 3mm Phillips Wafer Head, Black
$0.10Choose size -
Dell Latitude 5430 Replacement Screws Sold Individually – M2 x 2.5mm, M2 x 3mm, M2 x 5mm, M2.5 x 5mm Phillips Wafer Head, Black
$0.10Choose size
More in Drones, RC & Gimbals
1/10 scale RC cars1/8 scale RC car chassis hardware3D-printed FPV stack mounts and spacers5-inch brushless motor to armAirsoft V2 / EHPA gearbox shellsALware Quad Flyer Spider 500 quadcopter kitAntique wall clock pendulum bracketsArcade marquee retainersARRMA Senton (and similar 1/10 vehicles)ARRMA Senton/kingpin-equipped vehiclesAxial Racing crawler/buggy kitsAxial SCX10 III RC crawler chassis
Browse all 144 in Drones, RC & Gimbals →The same screw also fits
Devices whose records share a thread with Vintage radio chassis and dial screws, closest length match first.
- FPV flight controller stack 20x20mm also M2 × 7–10 mm
- Arcade marquee retainers also M2 × 6–10 mm
- FPV freestyle frames (Djinn F25 SP) also M2 × 4–10 mm
- PowerVision PowerRay underwater drone also M2 × 5 mm
- Axial SCX10 III RC crawler chassis also M2 × 6–10 mm
- NSR PK guide (1/32 slot car) also M2 × 4 mm
- RC model servo mounting also M2 × 6–10 mm
- E-flite Gee Bee R-2 wing connector screws also M2 × 8 mm
Questions about Vintage radio chassis and dial screws screws
- What size screw does Vintage radio chassis and dial screws use?
- M2 × 4–10 mm for chassis, dial and trim screws in restoration work.
- How long are the screws in Vintage radio chassis and dial screws?
- The records range from 4 to 10 mm depending on the position, so match each screw to its own hole.
- 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 Vintage radio chassis and dial 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 Vintage radio chassis and dial screws?
- TechSpareWarehouse (our own store) lists M2 x 4mm, M2 x 5mm and M2 x 6mm, which match lengths in the records above.