Lenovo ThinkPad 4 screw size

Lenovo ThinkPad 4 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.

How to check the screw before you buy

1. A screw that is even 1 mm too long in a laptop base can push into the keyboard, battery or a board trace, so match the length position by position.
2. Diameter: across the threads an M1.6 screw measures about 1.6 mm with calipers (usually a hair under). This device also uses M2 / M2.5, so measure each screw rather than assuming they match.
3. Pitch: 0.35 mm from one thread crest to the next (28.57 crests per centimetre). A thread pitch gauge or the pitch-gauge tool settles it in seconds.
4. Length: the source describes a countersunk (flat) head, and those are measured overall, from the top of the head to the tip.
5. The records span 1.8–5 mm, which means different positions take different lengths — match each hole to its own screw.
6. Driver: the source does not name the drive. Standard M1.6 heads take PH00 for Phillips and T4–T5 for Torx, and a 1.5 mm hex key for socket heads; a bit that fits loosely will cam out and strip the head.
7. Tightening: no device-specific torque is published in these records. The site's general figure for M1.6 is about 12-20 N·cm into metal threads and 6-10 N·cm into plastic bosses; snug it up and stop.

Pitch gauge · Screw size finder · Torque guide

More in Laptops & PCs

The same screw also fits

Devices whose records share a thread with Lenovo ThinkPad 4, closest length match first.

• Chromebook bottom case also M2 × 5 mm
• Acer Extensa 5230 also M2 × 3 mm
• Dell Inspiron 15 3583 also M2 × 3 mm
• Lenovo ThinkPad X260 also M2 × 3 mm
• Dell Inspiron 15 7572 also M2 × 3 mm
• HP Pavilion 16 inch PC 16z-ag000 also M2 × 2.5 mm
• HP Compaq Presario V3000 also M2 × 5 mm
• Lenovo ThinkPad S14 also M2 × 5 mm

Questions about Lenovo ThinkPad 4 screws

What size screw does Lenovo ThinkPad 4 use?

M1.6 × 1.8 mm for internal FRU screw listed in the official Hardware Maintenance Manual screw tables — flat-head, 1.8mm long; M2 × 5 mm for internal FRU screw listed in the official Hardware Maintenance Manual screw tables — flat-head, 5.0mm long; M2 × 3.5 mm for internal FRU screw listed in the official Hardware Maintenance Manual screw tables — flat-head, 3.5mm long; M2 × 2.5 mm for internal FRU screw listed in the official Hardware Maintenance Manual screw tables — flat-head, 2.5mm long; M2 × 5 mm for internal FRU screw listed in the official Hardware Maintenance Manual screw tables — flat-head, 5mm long; M2 × 3 mm for internal FRU screw listed in the official Hardware Maintenance Manual .

How long are the screws in Lenovo ThinkPad 4?

The records range from 1.8 to 5 mm depending on the position, so match each screw to its own hole.

What is the thread pitch of an M1.6 screw?

0.35 mm (coarse), which is the standard pitch for M1.6 machine screws; a 0.2 mm fine pitch exists but is uncommon. The tap drill is 1.25 mm and the normal clearance hole is 1.8 mm.

What screwdriver do I need for Lenovo ThinkPad 4?

The sources do not name the drive. For M1.6, Phillips heads normally take PH00 and Torx heads T4–T5; socket heads take a 1.5 mm hex key.

Can I use an imperial screw instead of M1.6?

No. Imperial look-alike: #1-72 UNF (1.85 mm) is larger; there is no true imperial equivalent. Use a true M1.6 screw so it does not cross-thread or strip the hole.

Where can I buy replacement screws for Lenovo ThinkPad 4?

TechSpareWarehouse (our own store) lists M2 x 5mm, M2 x 2.5mm and M2 x 3mm, which match lengths in the records above.