Lenovo Z40-75 screw size

Lenovo Z40-75 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. Laptop covers and brackets often mix two or three lengths of the same thread, so lay the screws out in the order they came out (a magnetic mat or a sheet of paper with the hole pattern drawn on it works).
2. Diameter: across the threads an M2 screw measures about 2 mm with calipers (usually a hair under). If yours measures noticeably more or less, it is a different thread.
3. Pitch: 0.4 mm from one thread crest to the next (25 crests per centimetre). A thread pitch gauge or the pitch-gauge tool settles it in seconds.
4. Length: measure from under the head to the tip for pan, button, wafer and cap heads; countersunk (flat) heads are measured overall.
5. The record states 3.5 mm. Going longer risks bottoming out or touching parts behind the hole; going shorter loses thread engagement.
6. Driver: the source names a Phillips drive. For comparison, standard M2 heads take PH0 (Phillips) or T6 (Torx), or a 1.5 mm hex key.
7. Tightening: no device-specific torque is published in these records. The site's general figure for M2 is about 25-40 N·cm into metal threads and 12-20 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 Z40-75, closest length match first.

• Lenovo ThinkPad L14 Gen 3 also M2 × 3.5 mm
• Lenovo G400s Touch also M2 × 3.5 mm
• HP 14 inch 14a-na1000 (ids 32708668 also M2 × 3.5 mm
• Lenovo ideapad 310S-11IAP also M2 × 3.5 mm
• Lenovo YOGA C930-13IKB Glass also M2 × 3.5 mm
• Lenovo G50-70 also M2 × 3.5 mm
• Lenovo ideapad 320S-15IKB also M2 × 3.5 mm
• Lenovo YOGA 330R-11IGM also M2 × 3.5 mm

Questions about Lenovo Z40-75 screws

What size screw does Lenovo Z40-75 use?

M2 × 3.5 mm for I/O board (qty 1, black, Phillips); M2 × 3.5 mm for base cover (qty 2, black, Phillips); M2 × 3.5 mm for display (qty 4, black,silver, Phillips); M2 × 3.5 mm for fan (qty 3, black, Phillips); M2 × 3.5 mm for hard drive (qty 4, black,silver, Phillips); M2 × 3.5 mm for heat sink (qty 7, black, Phillips); M2 × 3.5 mm for keyboard (qty 3, black, Phillips); M2 × 3.5 mm for optical drive (qty 1, black, Phillips); M2 × 3.5 mm for palm rest (qty 10, black, Phillips); M2 × 3.5 mm for system board (qty 1, black, Phillips); M2 × 3.5 mm for wireless card (qty 1, black, Phillips).

How long are the screws in Lenovo Z40-75?

The record gives 3.5 mm. Measure the original from under the head (overall for a countersunk head) to confirm before ordering.

What is the thread pitch of an M2 screw?

0.4 mm (coarse), which is the standard pitch for M2 machine screws; a 0.25 mm fine pitch exists but is uncommon. The tap drill is 1.6 mm and the normal clearance hole is 2.4 mm.

What screwdriver do I need for Lenovo Z40-75?

The source lists a Phillips drive. Standard M2 heads otherwise take PH0 (Phillips) or T6 (Torx), or a 1.5 mm hex key.

Can I use an imperial screw instead of M2?

No. Imperial look-alike: #2-56 UNC (2.18 mm) is close but not interchangeable. Use a true M2 screw so it does not cross-thread or strip the hole.