Car license plate U-clip retaining fasteners (trim) screw size
M6 · 10 to 20 mm long
The screws used on Car license plate U-clip retaining fasteners (trim) are M6 in lengths from 10 to 20 mm.
It is listed for amazon/Tilga listings for automotive license plate/trim U-nut retaining clips explicitly state 'M6 Nut U-Type' / 'M6 Screw Hole' for fender, bumper, and license plate trim panels.
This entry is marked confirmed and comes from amazon.com.
For reference, M6 is 6 mm across the threads at 1 mm pitch. The imperial size people confuse it with: 1/4in-20 (6.35 mm) — the tripod/camera thread; visibly larger than M6.
Car license plate U-clip retaining fasteners (trim) 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 |
|---|---|---|---|---|---|---|
| M6 | 10–20 mm | 1 mm | not stated | not stated | Amazon/Tilga listings for automotive license plate/trim U-nut retaining clips explicitly state 'M6 Nut U-Type' / 'M6 Screw Hole' for fender, bumper, and license plate trim panels | Confirmed |
Fitment records and sources
Amazon/Tilga listings for automotive license plate/trim U-nut retaining clips explicitly state 'M6 Nut U-Type' / 'M6 Screw Hole' for fender, bumper, and license plate trim panels
pitch 1 mm · tap 5 mm · clearance 6.6 mm · PH3 / Torx T30
How to check the screw before you buy
- On vehicles and bikes, use the original strength class and finish; outdoor hardware is usually stainless or coated to resist corrosion.
- Diameter: across the threads an M6 screw measures about 6 mm with calipers (usually a hair under). If yours measures noticeably more or less, it is a different thread.
- Pitch: 1 mm from one thread crest to the next (10 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 10–20 mm, which means different positions take different lengths — match each hole to its own screw.
- Driver: the source does not name the drive. Standard M6 heads take PH3 for Phillips and T30 for Torx, and a 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 M6 is about 7-10 N·m into metal threads and 2.5-4.0 N·m into plastic bosses; snug it up and stop.
Common mix-ups with M6
- Trailer license plate mounts frequently use 1/4 inch screws in the US, but international and many modern bracket kits have shifted to M6.
- Manual explicitly warns that under-tightening this M6 hinge screw can let the door glass crash into the drum, so torque compliance matters more than just thread match.
More in Vehicles, Marine & Mobility
The same screw also fits
Devices whose records share a thread with Car license plate U-clip retaining fasteners (trim), closest length match first.
- Shimano Deore BR-M6100 disc brake caliper also M6 × 18 mm
- Exercise bike seat post clamp also M6 × 20 mm
- Car license plate mounting screws also M6 × 16–20 mm
- Motorcycle fairing panels also M6 × 12–20 mm
- Small boat deck hardware also M6 × 16–20 mm
- Gas grill cart and legs also M6 × 20 mm
- Shimano BR-M6100 disc brake caliper also M6 × 18 mm
- Pride Go-Go scooter tiller lock knob also M6 × 15–20 mm
Questions about Car license plate U-clip retaining fasteners (trim) screws
- What size screw does Car license plate U-clip retaining fasteners (trim) use?
- M6 × 10–20 mm for amazon/Tilga listings for automotive license plate/trim U-nut retaining clips explicitly state 'M6 Nut U-Type' / 'M6 Screw Hole' for fender, bumper, and license plate trim panels.
- How long are the screws in Car license plate U-clip retaining fasteners (trim)?
- The records range from 10 to 20 mm depending on the position, so match each screw to its own hole.
- What is the thread pitch of an M6 screw?
- 1 mm (coarse), which is the standard pitch for M6 machine screws; a 0.75 mm fine pitch exists but is uncommon. The tap drill is 5 mm and the normal clearance hole is 6.6 mm.
- What screwdriver do I need for Car license plate U-clip retaining fasteners (trim)?
- The sources do not name the drive. For M6, Phillips heads normally take PH3 and Torx heads T30; socket heads take a 5 mm hex key.
- Can I use an imperial screw instead of M6?
- No. Imperial look-alike: 1/4in-20 (6.35 mm) — the tripod/camera thread; visibly larger than M6. Use a true M6 screw so it does not cross-thread or strip the hole.