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Axial Racing crawler/buggy kits screw size

M2.5 · 6 to 12 mm long

Axial Racing crawler/buggy kits takes M2.5 metric screws in lengths from 6 to 12 mm.

There are 5 separate fitment records for it, including button head chassis/link screw (black-oxide, Axial factory hardware) (M2.5), button head chassis/link screw, shorter length variant (M2.5) and flat head countersunk screw, factory replacement (M2.5), plus 2 more in the table below.

Head and drive, as the sources state them: button and flat / countersunk heads.

5 of the 5 records are marked confirmed, drawn from 3 sources (horizonhobby.com, towerhobbies.com and store.hobbyetc.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.

Axial Racing crawler/buggy 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	10 mm	0.45 mm	Button head	not stated	Button head chassis/link screw (black-oxide, Axial factory hardware)black finish	Confirmed
M2.5	8 mm	0.45 mm	Button head	not stated	Button head chassis/link screw, shorter length variant	Confirmed
M2.5	10 mm	0.45 mm	Flat / countersunk	not stated	Flat head countersunk screw, factory replacement	Confirmed
M2.5	12 mm	0.45 mm	Flat / countersunk	not stated	Flat head countersunk screw for flush mounting	Confirmed
M2.5	6 mm	0.45 mm	Flat / countersunk	not stated	Flat head countersunk screw, short length	Confirmed

Fitment records and sources

M2.510mmconfirmed

Button head chassis/link screw (black-oxide, Axial factory hardware)

pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8

M2.58mmconfirmed

Button head chassis/link screw, shorter length variant

pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8

M2.510mmconfirmed

Flat head countersunk screw, factory replacement

pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8

M2.512mmconfirmed

Flat head countersunk screw for flush mounting

pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8

M2.56mmconfirmed

Flat head countersunk screw, short length

pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8

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 M2.5 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: the source describes a countersunk (flat) head, and those are measured overall, from the top of the head to the tip.
The records span 6–12 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.

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 Axial Racing crawler/buggy kits, closest length match first.

Hitec / Futaba RC servo horn also M2.5 × 8 mm
Mikado RC helicopter servo mounting screw also M2.5 × 12 mm
Sewing machine needle plate also M2.5 × 10 mm
Hitec / Futaba servo horn retaining screw also M2.5 × 8 mm
PowerVision PowerRay underwater drone also M2.5 × 10 mm
Holybro X500 V2 with Pixhawk 6C (PX4 official build) also M2.5 × 6 mm
Antique wall clock pendulum brackets also M2.5 × 10 mm
DJI OEM mounting screw (quad/hex arm hardware) also M2.5 × 6 mm

Questions about Axial Racing crawler/buggy kits screws

What size screw does Axial Racing crawler/buggy kits use?: M2.5 × 10 mm for button head chassis/link screw (black-oxide, Axial factory hardware); M2.5 × 8 mm for button head chassis/link screw, shorter length variant; M2.5 × 10 mm for flat head countersunk screw, factory replacement; M2.5 × 12 mm for flat head countersunk screw for flush mounting; M2.5 × 6 mm for flat head countersunk screw, short length.
How long are the screws in Axial Racing crawler/buggy kits?: The records range from 6 to 12 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 Axial Racing crawler/buggy 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 Axial Racing crawler/buggy kits?: TechSpareWarehouse (our own store) lists M2.5 x 10mm, M2.5 x 8mm and M2.5 x 12mm, which match lengths in the records above.

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