What size screw does Fishing reel handle retainer use?

M3 × 3–10 mm for holds the handle nut retainer plate on baitcasters.

How long are the screws in Fishing reel handle retainer?

The records range from 3 to 10 mm depending on the position, so match each screw to its own hole.

What is the thread pitch of an M3 screw?

0.5 mm (coarse), which is the standard pitch for M3 machine screws; a 0.35 mm fine pitch exists but is uncommon. The tap drill is 2.5 mm and the normal clearance hole is 3.4 mm.

What screwdriver do I need for Fishing reel handle retainer?

The sources do not name the drive. For M3, Phillips heads normally take PH1 and Torx heads T10; socket heads take a 2.5 mm hex key.

Can I use an imperial screw instead of M3?

No. Imperial look-alike: #5-40 (3.18 mm) or #4-40 — neither interchanges with M3. Use a true M3 screw so it does not cross-thread or strip the hole.

Where can I buy replacement screws for Fishing reel handle retainer?

TechSpareWarehouse (our own store) lists M3 x 3mm, M3 x 4mm and M3 x 5mm, which match lengths in the records above.

Fishing reel handle retainer screw size

M3 · 3 to 10 mm long

If you are replacing a screw on Fishing reel handle retainer, the thread is M3 in lengths from 3 to 10 mm.

It is listed for holds the handle nut retainer plate on baitcasters.

This entry is marked confirmed and comes from hedgehog-studio.co.jp.

An M3 screw is 3 mm in diameter with a 0.5 mm pitch, tapped with a 2.5 mm drill; imperial look-alike: #5-40 (3.18 mm) or #4-40 — neither interchanges with M3.

Fishing reel handle retainer 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
M3	3–10 mm	0.5 mm	not stated	not stated	holds the handle nut retainer plate on baitcasters	Confirmed

Fitment records and sources

M33-10mmconfirmed

holds the handle nut retainer plate on baitcasters

pitch 0.5 mm · tap 2.5 mm · clearance 3.4 mm · PH1 / Torx T10

Source

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 M3 screw measures about 3 mm with calipers (usually a hair under). If yours measures noticeably more or less, it is a different thread.
Pitch: 0.5 mm from one thread crest to the next (20 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 3–10 mm, which means different positions take different lengths — match each hole to its own screw.
Driver: the source does not name the drive. Standard M3 heads take PH1 for Phillips and T10 for Torx, and a 2.5 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 M3 is about 80-130 N·cm into metal threads and 35-60 N·cm into plastic bosses; snug it up and stop.

Common mix-ups with M3

M3 (3.0mm, 0.5mm pitch) is not #6-32 UNC (~3.5mm) — they look identical and cross-thread, the single most common PC-building mistake.

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 Fishing reel handle retainer, closest length match first.

Scope / rail mount base screws (small metric) also M3 × 10 mm
E-scooter stem and controller housing also M3 × 10 mm
Gotrax electric scooter assembly screw also M3 × 6 mm
Airgun scope/rail mount replacement screws also M3 × 10 mm
Fishing reel side plate / frame also M3 × 6–10 mm
OE Handgrinders Fixie coffee grinder also M3 × 6 mm
Segway Ninebot Max G30 dashboard cover also M3 × 8 mm
Camper/caravan/tent fitting screw also M3 × 6 mm

Questions about Fishing reel handle retainer screws

What size screw does Fishing reel handle retainer use?: M3 × 3–10 mm for holds the handle nut retainer plate on baitcasters.
How long are the screws in Fishing reel handle retainer?: The records range from 3 to 10 mm depending on the position, so match each screw to its own hole.
What is the thread pitch of an M3 screw?: 0.5 mm (coarse), which is the standard pitch for M3 machine screws; a 0.35 mm fine pitch exists but is uncommon. The tap drill is 2.5 mm and the normal clearance hole is 3.4 mm.
What screwdriver do I need for Fishing reel handle retainer?: The sources do not name the drive. For M3, Phillips heads normally take PH1 and Torx heads T10; socket heads take a 2.5 mm hex key.
Can I use an imperial screw instead of M3?: No. Imperial look-alike: #5-40 (3.18 mm) or #4-40 — neither interchanges with M3. Use a true M3 screw so it does not cross-thread or strip the hole.
Where can I buy replacement screws for Fishing reel handle retainer?: TechSpareWarehouse (our own store) lists M3 x 3mm, M3 x 4mm and M3 x 5mm, which match lengths in the records above.

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