M1.4 vs M1.6
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.
| M1.4 | M1.6 | |
|---|---|---|
| Thread diameter | 1.40 mm | 1.60 mm |
| Standard pitch | 0.3 mm | 0.35 mm |
| Tap drill | 1.1 mm | 1.25 mm |
| Clearance hole | 1.6 mm | 1.8 mm |
| Cap head Ø | 2.6 mm | 3 mm |
| Hex key | 1.3 mm | 1.5 mm |
| Torque into steel | 8-12 N·cm | 12-20 N·cm |
| Into plastic | 4-7 N·cm | 6-10 N·cm |
M1.4 is normally used for
Standard eyeglass hinge screw, camera bodies, phone internals, micro drones
Everything M1.4 fits →M1.6 is normally used for
Laptop hinges and boards, connectors, small standoffs, instrument panels
Everything M1.6 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 — 1.4 mm means M1.4, 1.6 mm means M1.6.
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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M1.4 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 -
M1.6 x 2mm Black Wafer Head Keyboard & Speaker Screws for HP ZBook Fury G1i 18 – 70-Pack Replacement
$7.99Choose size -
M1.6 x 2mm Black Wafer Head M.2 2230 SSD Screws for Alienware m15 R1 & Dell Inspiron 15 5502 – 10-Pack Replacement
$4.99Choose size -
M1.6 x 2mm Black Wafer Head Phillips Machine Screws (4mm Thin Flat Head) for Laptop, Tablet & Micro Electronics
From $4.99Choose size
