M1.2 vs M1.4
They differ by 0.2 mm across the threads — enough that they are never interchangeable, but little enough that they are easy to mix up in a parts tray.
| M1.2 | M1.4 | |
|---|---|---|
| Thread diameter | 1.20 mm | 1.40 mm |
| Standard pitch | 0.25 mm | 0.3 mm |
| Tap drill | 0.95 mm | 1.1 mm |
| Clearance hole | 1.4 mm | 1.6 mm |
| Cap head Ø | 2.3 mm | 2.6 mm |
| Hex key | 1.0 mm | 1.3 mm |
| Torque into steel | 5-8 N·cm | 8-12 N·cm |
| Into plastic | 3-5 N·cm | 4-7 N·cm |
M1.2 is normally used for
Eyeglass hinges, watch cases, hearing aids, handheld game consoles, the very smallest laptop brackets
Everything M1.2 fits →M1.4 is normally used for
Standard eyeglass hinge screw, camera bodies, phone internals, micro drones
Everything M1.4 fits →If you are not sure which one you have
Measure across the outside of the threads with a caliper. A reading within about 0.1 mm of the nominal size is your answer — 1.2 mm means M1.2, 1.4 mm means M1.4.
Use the screw size finder →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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M1.2 x 2mm Phillips Wafer Head Screw for Digital Camera & Micro Robotics - Pack of 50 Black
$4.99 -
M1.2 x 2mm Phillips Wafer Head Screw for Alienware x16 R2 Laptop Repair - Single Replacement Black
$0.10 each · min. 50
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M1.2 x 2mm Phillips Wafer Head Screw for Eyeglasses & Sunglasses Hinge Repair - Single Replacement Black
$0.10 each · min. 50
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M1.4 x 3.5mm Black Wafer Head Headphone Housing Screws for Sennheiser MOMENTUM On-Ear, M2 OEBT, OEG & OEi – 20-Pack Replacement
$4.99Choose size -
M1.4 x 3.5mm Black Wafer Head Internal Screws for Samsung Galaxy S21, S20, A54, A53, Note 10 – 20-Pack Replacement
$4.99Choose size -
M1.4 x 3.5mm Black Wafer Head Phillips Machine Screws (2.5mm Thin Flat Head) for Phone, Tablet & Micro Electronics
From $4.99Choose size
