Husqvarna 122-series string trimmer / brushcutter housing screw size
M5 · 15 mm long
Husqvarna 122-series string trimmer / brushcutter housing takes M5 metric screws, 15 mm long.
It is listed for genuine Husqvarna 525 75 51-01 M5 x 15mm T27 Torx housing screw.
Head and drive, as the source states them: Torx T27 drive.
This entry is marked confirmed and comes from lsengineers.co.uk.
M5 means a 5 mm nominal diameter with a 0.8 mm thread pitch. Imperial look-alike: #10-32 (4.83 mm) — the other common rack thread; check before mixing.
Husqvarna 122-series string trimmer / brushcutter housing 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 |
|---|---|---|---|---|---|---|
| M5 | 15 mm | 0.8 mm | not stated | Torx T27 | Genuine Husqvarna 525 75 51-01 M5 x 15mm T27 Torx housing screw | Confirmed |
Fitment records and sources
Genuine Husqvarna 525 75 51-01 M5 x 15mm T27 Torx housing screw
pitch 0.8 mm · tap 4.2 mm · clearance 5.5 mm · PH2 / Torx T25
How to check the screw before you buy
- Check the strength class stamped on the head (8.8, 10.9, A2-70) and replace like for like.
- Diameter: across the threads an M5 screw measures about 5 mm with calipers (usually a hair under). If yours measures noticeably more or less, it is a different thread.
- Pitch: 0.8 mm from one thread crest to the next (12.5 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 record states 15 mm. Going longer risks bottoming out or touching parts behind the hole; going shorter loses thread engagement.
- Driver: the source names a Torx T27 drive. For comparison, standard M5 heads take PH2 (Phillips) or T25 (Torx), or a 4 mm hex key.
- Tightening: no device-specific torque is published in these records. The site's general figure for M5 is about 4.0-6.0 N·m into metal threads and 1.5-2.5 N·m into plastic bosses; snug it up and stop.
Common mix-ups with M5
- Husqvarna alone mixes M5 (trimmer and chainsaw housings) and M6 (brushcutter/mower housings), so screws are not interchangeable across their own models.
- M5x0.8 is the de facto universal bike thread — confirm 0.8mm pitch before threading into carbon or alloy bosses.
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Devices whose records share a thread with Husqvarna 122-series string trimmer / brushcutter housing, closest length match first.
- Machinery access panels also M5 × 15 mm
- Makita 1806B planer also M5 × 15 mm
- ABB ACS580 motor terminal box / cable glands also M5 × 15 mm
- Motorcycle fairing bolts also M5 × 15 mm
- Wheelchair armrest and footrest brackets also M5 × 15 mm
- EcoFlow Power Kits Power Hub wall/RV mounting hardware also M5 × 15 mm
- E-scooter fenders & kickstands also M5 × 15 mm
- Bicycle bottle cage bosses (Trek and industry standard) also M5 × 15 mm
Questions about Husqvarna 122-series string trimmer / brushcutter housing screws
- What size screw does Husqvarna 122-series string trimmer / brushcutter housing use?
- M5 × 15 mm for genuine Husqvarna 525 75 51-01 M5 x 15mm T27 Torx housing screw.
- How long are the screws in Husqvarna 122-series string trimmer / brushcutter housing?
- The record gives 15 mm. Measure the original from under the head (overall for a countersunk head) to confirm before ordering.
- What is the thread pitch of an M5 screw?
- 0.8 mm (coarse), which is the standard pitch for M5 machine screws; a 0.5 mm fine pitch exists but is uncommon. The tap drill is 4.2 mm and the normal clearance hole is 5.5 mm.
- What screwdriver do I need for Husqvarna 122-series string trimmer / brushcutter housing?
- The source lists a Torx T27 drive. Standard M5 heads otherwise take PH2 (Phillips) or T25 (Torx), or a 4 mm hex key.
- Can I use an imperial screw instead of M5?
- No. Imperial look-alike: #10-32 (4.83 mm) — the other common rack thread; check before mixing. Use a true M5 screw so it does not cross-thread or strip the hole.