What size screw does Hearing aids use?

M1.2 × 1.5–2.5 mm for battery door / shell & faceplate screws on BTE and ITE aids.

How long are the screws in Hearing aids?

The records range from 1.5 to 2.5 mm depending on the position, so match each screw to its own hole.

What is the thread pitch of an M1.2 screw?

0.25 mm (coarse), which is the standard pitch for M1.2 machine screws. The tap drill is 0.95 mm and the normal clearance hole is 1.4 mm.

What screwdriver do I need for Hearing aids?

The sources do not name the drive. For M1.2, Phillips heads normally take PH000 / JIS 00 and Torx heads T1–T2.

Can I use an imperial screw instead of M1.2?

No. Imperial look-alike: #0-80 UNF (1.52 mm) is the closest imperial screw, but it is bigger — not a substitute. Use a true M1.2 screw so it does not cross-thread or strip the hole.

Where can I buy replacement screws for Hearing aids?

TechSpareWarehouse (our own store) lists M1.2 x 2mm, which matches the length in the records above.

Hearing aids screw size

M1.2 · 1.5 to 2.5 mm long

Hearing aids takes M1.2 metric screws in lengths from 1.5 to 2.5 mm.

The record covers battery door / shell & faceplate screws on BTE and ITE aids.

This entry is marked reported and comes from accio.com.

For reference, M1.2 is 1.2 mm across the threads at 0.25 mm pitch. The imperial size people confuse it with: #0-80 UNF (1.52 mm) is the closest imperial screw, but it is bigger — not a substitute.

Hearing aids 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
M1.2	1.5–2.5 mm	0.25 mm	not stated	not stated	battery door / shell & faceplate screws on BTE and ITE aids	Reported

Fitment records and sources

M1.21.5-2.5mmreported

battery door / shell & faceplate screws on BTE and ITE aids

pitch 0.25 mm · tap 0.95 mm · clearance 1.4 mm · PH000 / JIS 00 / Torx T1–T2

Source

How to check the screw before you buy

Keep material and finish the same as the original (often stainless) on equipment that is cleaned or sterilised.
Diameter: across the threads an M1.2 screw measures about 1.2 mm with calipers (usually a hair under). If yours measures noticeably more or less, it is a different thread.
Pitch: 0.25 mm from one thread crest to the next (40 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 1.5–2.5 mm, which means different positions take different lengths — match each hole to its own screw.
Driver: the source does not name the drive. Standard M1.2 heads take PH000 / JIS 00 for Phillips and T1–T2 for Torx; 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 M1.2 is about 5-8 N·cm into metal threads and 3-5 N·cm into plastic bosses; snug it up and stop.

Common mix-ups with M1.2

M1.2 and M1.4 look identical in an eyeglass repair kit — the wrong one strips soft acetate or metal hinges.

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.

More in Medical & Laboratory

Agilent 1100 LC/MSD mass spectrometer Agilent 8453 UV-Visible spectrophotometer Alaris 8110/8120 infusion pump Behind-the-ear hearing aid shell Belmont Eurus S6 Dental Unit BHI Implants Rosen screw Bicycle SPD-SL / SPD cleat fixing bolts Bien-Air Dental Handpieces BioHorizons CONELOG Dental Implants Blind-tapped DN16CF ConFlat vacuum flange (metric)BMC RESmart CPAP machine Bredent dental prosthetic screw

Browse all 92 in Medical & Laboratory →

The same screw also fits

Devices whose records share a thread with Hearing aids, closest length match first.

Hearing aid battery door hinge also M1.2 × 1.5–2 mm
Olympus Gastrointestinal Videoscopes (GIF-160/180/Q180) also M1.2 × 1.5 mm
Wireless earbud charging case hinge also M1.2 × 1.5–2.5 mm
Bien-Air Dental Handpieces also M1.2 × 2 mm
Dell Inspiron 15 7591 also M1.2 × 2 mm
Dell Inspiron 15 7590 also M1.2 × 2 mm
Dell Inspiron 15 7580 also M1.2 × 1.5 mm
Dell Inspiron 11 3162 also M1.2 × 2 mm

Questions about Hearing aids screws

What size screw does Hearing aids use?: M1.2 × 1.5–2.5 mm for battery door / shell & faceplate screws on BTE and ITE aids.
How long are the screws in Hearing aids?: The records range from 1.5 to 2.5 mm depending on the position, so match each screw to its own hole.
What is the thread pitch of an M1.2 screw?: 0.25 mm (coarse), which is the standard pitch for M1.2 machine screws. The tap drill is 0.95 mm and the normal clearance hole is 1.4 mm.
What screwdriver do I need for Hearing aids?: The sources do not name the drive. For M1.2, Phillips heads normally take PH000 / JIS 00 and Torx heads T1–T2.
Can I use an imperial screw instead of M1.2?: No. Imperial look-alike: #0-80 UNF (1.52 mm) is the closest imperial screw, but it is bigger — not a substitute. Use a true M1.2 screw so it does not cross-thread or strip the hole.
Where can I buy replacement screws for Hearing aids?: TechSpareWarehouse (our own store) lists M1.2 x 2mm, which matches the length in the records above.

Heads up: shipping delay