What size screw does Brother HL-2170W laser printer use?

M3 × 8 mm for taptite cup B M3 x 8 screws (x2) fastening the key stopper, torque 0.4 Nm; M4 × 12–14 mm for taptite bind B M4 x 12 for inner chute assembly and Taptite pan washer B M4 x 14 for the fuser unit.

How long are the screws in Brother HL-2170W laser printer?

The records range from 8 to 14 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 Brother HL-2170W laser 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.

How tight should the M3 screw on Brother HL-2170W laser printer be?

The source gives 0.4 Nm for taptite cup B M3 x 8 screws (x2) fastening the key stopper, torque 0.4 Nm.

Where can I buy replacement screws for Brother HL-2170W laser printer?

TechSpareWarehouse (our own store) lists M3 x 8mm, which matches the length in the records above.

Brother HL-2170W laser printer screw size

M3 / M4 · 8 to 14 mm long

Brother HL-2170W laser printer takes M3 and M4 metric screws in lengths from 8 to 14 mm.

There are 2 separate fitment records for it, including taptite cup B M3 x 8 screws (x2) fastening the key stopper, torque 0.4 Nm (M3) and taptite bind B M4 x 12 for inner chute assembly and Taptite pan washer B M4 x 14 for the f (M4).

Head and drive, as the sources state them: binding head.

2 of the 2 records are marked confirmed, drawn from 1 source (brother.manymanuals.com).

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.

Brother HL-2170W laser printer 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
M3	8 mm	0.5 mm	not stated	not stated	0.4 Nm	Taptite cup B M3 x 8 screws (x2) fastening the key stopper, torque 0.4 Nmself-tapping / thread-forming	Confirmed
M4	12–14 mm	0.7 mm	Binding head	not stated	not stated	Taptite bind B M4 x 12 for inner chute assembly and Taptite pan washer B M4 x 14 for the fuser unitself-tapping / thread-forming, washer / flange face	Confirmed

Fitment records and sources

M38mmconfirmed

Taptite cup B M3 x 8 screws (x2) fastening the key stopper, torque 0.4 Nm

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

Source

M412-14mmconfirmed

Taptite bind B M4 x 12 for inner chute assembly and Taptite pan washer B M4 x 14 for the fuser unit

pitch 0.7 mm · tap 3.3 mm · clearance 4.5 mm · PH2 / Torx T20

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). This device also uses M4, so measure each screw rather than assuming they match.
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: for binding head screws, measure from under the head to the tip (countersunk heads are the exception: they are measured overall).
The records span 8–14 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.

Common mix-ups with M3 / M4

Only the torque spec is given (1.2 Nm), not shank length or head style — confirm length by direct measurement before ordering replacements.
Pond/aquarium equipment manuals aimed at consumers rarely specify exact thread pitch or length for internal fasteners, since these are considered non-user-serviceable; distributor-level assembly/service manuals (e.g., Maytronics internal documents) are a better source than end-user guides.
Parts lists that say 'Taptite T-20 screw' are naming the driver, not the thread - only trust the separate M-size callout.
US-made pinball machines (Williams/Bally/Stern) overwhelmingly use imperial UTS threads (#6-32, #8-32, #10-32); explicit metric threads only appear on newer/import components such as Jersey Jack Pinball's Hobbit Smaug assembly (M3).

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 Brother HL-2170W laser printer, closest length match first.

HP LaserJet 9000/9040/9050 series printer also M3 × 8 mm
Rexel S16 paper shredder also M4 × 12–14 mm
Bixolon SRP-B300II POS receipt printer also M3 × 8 mm
Elo self-service kiosk stand pan-head screw (Bag C) also M3 × 8 mm
Diebold Nixdorf DN100 ATM also M3 × 8 mm
Brother MFC-8950DW laser printer also M4 × 12 mm
Elo countertop self-service stand screw also M3 × 8 mm
Epson SC-P8500D / T7700D large-format printer also M3 × 8 mm

Questions about Brother HL-2170W laser printer screws

What size screw does Brother HL-2170W laser printer use?: M3 × 8 mm for taptite cup B M3 x 8 screws (x2) fastening the key stopper, torque 0.4 Nm; M4 × 12–14 mm for taptite bind B M4 x 12 for inner chute assembly and Taptite pan washer B M4 x 14 for the fuser unit.
How long are the screws in Brother HL-2170W laser printer?: The records range from 8 to 14 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 Brother HL-2170W laser 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.
How tight should the M3 screw on Brother HL-2170W laser printer be?: The source gives 0.4 Nm for taptite cup B M3 x 8 screws (x2) fastening the key stopper, torque 0.4 Nm.
Where can I buy replacement screws for Brother HL-2170W laser printer?: TechSpareWarehouse (our own store) lists M3 x 8mm, which matches the length in the records above.

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