Lenovo G50-45 screw size

Lenovo G50-45 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 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 G50-45, closest length match first.

• HP 250 G10 also M2 × 3.5 mm
• Lenovo Flex 4-1480 also M2 × 3.5 mm
• Lenovo B480 also M2 × 3.5 mm
• Lenovo IdeaPad S540-15IWL GTX also M2 × 3.5 mm
• Lenovo ThinkPad A485 also M2 × 3.5 mm
• Lenovo ThinkPad L590 also M2 × 3.5 mm
• Lenovo Z40-70 also M2 × 3.5 mm
• Lenovo ThinkPad A475 also M2 × 3.5 mm

Questions about Lenovo G50-45 screws

What size screw does Lenovo G50-45 use?

M2 × 3.5 mm for base cover (qty 3, 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 6, 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 3, black, Phillips); M2 × 3.5 mm for wireless card (qty 1, black, Phillips).

How long are the screws in Lenovo G50-45?

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 G50-45?

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.