Small boat deck hardware screw size
M6 · 16 to 25 mm long
The screws used on Small boat deck hardware are M6 in lengths from 16 to 25 mm.
The record covers instrument panels and light deck fittings.
This entry is marked reported.
An M6 screw is 6 mm in diameter with a 1 mm pitch, tapped with a 5 mm drill; imperial look-alike: 1/4in-20 (6.35 mm) — the tripod/camera thread; visibly larger than M6.
Small boat deck hardware 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 | 16–25 mm | 1 mm | not stated | not stated | Instrument panels and light deck fittings | Reported |
Fitment records and sources
Instrument panels and light deck fittings
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 16–25 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
- Cymbal stand top threads (M6) are a separate standard from tension rod/lug threads (M5) on the same drum kit, so hardware is not interchangeable between the two locations.
- Snowmobile/ATV/PWC switch and gauge hardware is mostly SAE inch; metric appears mainly on M6+ engine and driveline bolts.
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Devices whose records share a thread with Small boat deck hardware, closest length match first.
- Motorcycle fairing panels also M6 × 16–25 mm
- Car license plate mounting screws also M6 × 16–20 mm
- Heavy flat-pack furniture also M6 × 25 mm
- Exercise bike seat post clamp also M6 × 20–25 mm
- Shimano Deore BR-M6100 disc brake caliper also M6 × 18 mm
- Car license plate U-clip retaining fasteners (trim) also M6 × 16–20 mm
- Shimano BR-M6100 disc brake caliper also M6 × 18 mm
- Gas grill cart and legs also M6 × 20–25 mm
Questions about Small boat deck hardware screws
- What size screw does Small boat deck hardware use?
- M6 × 16–25 mm for instrument panels and light deck fittings.
- How long are the screws in Small boat deck hardware?
- The records range from 16 to 25 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 Small boat deck hardware?
- 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.