Triumph Thruxton rear mounting bracket screw size
M5 · 12 mm long
Triumph Thruxton rear mounting bracket takes M5 metric screws, 12 mm long.
It is listed for M5 x 12mm hex head fixings at 3 Nm.
This entry is marked confirmed and comes from triumphinstructions.com.
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.
Triumph Thruxton rear mounting bracket screw specifications
One row per fitment record. Head, drive and torque are shown only where the source states them; pitch is the ISO coarse pitch for the thread.
| Thread | Length | Pitch | Head | Drive | Torque | Where it goes | Status |
|---|---|---|---|---|---|---|---|
| M5 | 12 mm | 0.8 mm | not stated | not stated | 3 Nm | M5 x 12mm hex head fixings at 3 Nm | Confirmed |
Fitment records and sources
M5 x 12mm hex head fixings at 3 Nm
pitch 0.8 mm · tap 4.2 mm · clearance 5.5 mm · PH2 / Torx T25
How to check the screw before you buy
- Rack and enclosure hardware mixes metric and imperial (#8-32, #10-32, #6-32), so confirm the thread before forcing a screw.
- 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 12 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 M5 heads take PH2 for Phillips and T25 for Torx, and a 4 mm hex key for socket heads; a bit that fits loosely will cam out and strip the head.
Common mix-ups with M5
- M5x0.8 is the de facto universal bike thread — confirm 0.8mm pitch before threading into carbon or alloy bosses.
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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Devices whose records share a thread with Triumph Thruxton rear mounting bracket, closest length match first.
- RF Elements Twin Horn antenna bracket (secondary hardware) also M5 × 12 mm
- Rear-view / side mirror bracket also M5 × 12 mm
- Rack and fender eyelets also M5 × 12 mm
- Shelving brackets also M5 × 12 mm
- Bike rack & fender eyelets also M5 × 12 mm
- Leviton EV Series charging pedestal (EPED1 / EPED2) also M5 × 12 mm
- FJD 3D Excavator Guidance System (GNSS/IMU hardware) also M5 × 12 mm
- E-scooter fenders & kickstands also M5 × 12 mm
Questions about Triumph Thruxton rear mounting bracket screws
- What size screw does Triumph Thruxton rear mounting bracket use?
- M5 × 12 mm for M5 x 12mm hex head fixings at 3 Nm.
- How long are the screws in Triumph Thruxton rear mounting bracket?
- The record gives 12 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 Triumph Thruxton rear mounting bracket?
- The sources do not name the drive. For M5, Phillips heads normally take PH2 and Torx heads T25; socket heads take 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.
- How tight should the M5 screw on Triumph Thruxton rear mounting bracket be?
- The source gives 3 Nm for M5 x 12mm hex head fixings at 3 Nm.