How long are the screws in Bixolon SRP-B300II POS receipt printer?

The records range from 4 to 8 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 Bixolon SRP-B300II POS receipt printer?

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 Bixolon SRP-B300II POS receipt printer?

TechSpareWarehouse (our own store) lists M3 x 4mm, M3 x 5mm and M3 x 6mm, which match lengths in the records above.

Bixolon SRP-B300II POS receipt printer screw size

M3 · 4 to 8 mm long

Bixolon SRP-B300II POS receipt printer takes M3 metric screws in lengths from 4 to 8 mm.

It is listed for cover, frame and mechanism screws listed as M3x4, M3x6, M3x8.

This entry is marked confirmed and comes from bixolon.com.

For reference, M3 is 3 mm across the threads at 0.5 mm pitch. The imperial size people confuse it with: #5-40 (3.18 mm) or #4-40 — neither interchanges with M3.

Bixolon SRP-B300II POS receipt printer 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	4–8 mm	0.5 mm	not stated	not stated	Cover, frame and mechanism screws listed as M3x4, M3x6, M3x8	Confirmed

Fitment records and sources

M34-8mmconfirmed

Cover, frame and mechanism screws listed as M3x4, M3x6, M3x8

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

Source

How to check the screw before you buy

Check whether the mount uses a VESA pattern or a vendor bracket before buying screws.
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 4–8 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

Label printer parts lists write M3*6 with an asterisk; that is still a true ISO M3 x 6mm machine screw.
Printer manuals often mix screw callouts like 'M3*8L' (length in mm after the L) with driver-bit-only references elsewhere in the same manual — only the explicit M-prefixed entries were captured here.

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 Bixolon SRP-B300II POS receipt printer, closest length match first.

HP LaserJet 9000/9040/9050 series printer also M3 × 6 mm
Brother HL-2170W laser printer also M3 × 8 mm
Elo EMV cradle kit, P400 attachment screws also M3 × 6 mm
Elo self-service kiosk stand pan-head screw (Bag C) also M3 × 8 mm
Diebold Nixdorf DN100 ATM also M3 × 8 mm
Elo floor-mount self-service stand screw also M3 × 8 mm
Epson SC-P8500D / T7700D large-format printer also M3 × 8 mm
Elo countertop self-service stand screw also M3 × 8 mm

Questions about Bixolon SRP-B300II POS receipt printer screws

What size screw does Bixolon SRP-B300II POS receipt printer use?: M3 × 4–8 mm for cover, frame and mechanism screws listed as M3x4, M3x6, M3x8.
How long are the screws in Bixolon SRP-B300II POS receipt printer?: The records range from 4 to 8 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 Bixolon SRP-B300II POS receipt printer?: 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 Bixolon SRP-B300II POS receipt printer?: TechSpareWarehouse (our own store) lists M3 x 4mm, M3 x 5mm and M3 x 6mm, which match lengths in the records above.

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