HP EliteBook 840 Aero G8 screw size

HP EliteBook 840 Aero G8 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: measure from under the head to the tip for pan, button, wafer and cap heads; countersunk (flat) heads are measured overall.
5. The records span 1.8–10 mm, which means different positions take different lengths — match each hole to its own screw.
6. Driver: the source names a Phillips drive. For comparison, standard M1.6 heads take PH00 (Phillips) or T4–T5 (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 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 HP EliteBook 840 Aero G8, closest length match first.

• Lenovo B50-45 also M2 × 2 mm
• Lenovo ThinkPad Edge E220s also M2 × 4 mm
• Lenovo ideapad 500-14ISK also M2 × 2 mm
• Dell Vostro 16 7620 also M2 × 2 mm
• Lenovo ThinkPad R50 also M2 × 10 mm
• Lenovo K49 also M2 × 4 mm
• Lenovo YOGA 500-15ISK also M2 × 2.5 mm
• Lenovo ideapad Y720-15IKB also M2 × 4 mm

Questions about HP EliteBook 840 Aero G8 screws

What size screw does HP EliteBook 840 Aero G8 use?

M1.6 × 1.8 mm for touchpad (qty 5, Phillips); M1.6 × 3 mm for hinge (qty 1, Phillips); M2 × 10 mm for hinge (qty 3, Phillips); M2 × 2 mm for card reader (qty 3, Phillips); M2 × 2 mm for power button (qty 1, Phillips); M2 × 2 mm for system board (qty 3, Phillips); M2 × 2 mm for wireless card (qty 1, Phillips); M2 × 2.5 mm for SSD (qty 1, Phillips); M2 × 2.5 mm for wireless card (qty 1, Phillips); M2 × 4 mm for I/O board (qty 3, Phillips); M2 × 4 mm for battery (qty 4, Phillips); M2 × 4 mm for system board (qty 4, Phillips); M2 × 4 mm for unspecified (qty 1, Phillips); M2.5 × 4 mm for display (qty 6, Phillips).

How long are the screws in HP EliteBook 840 Aero G8?

The records range from 1.8 to 10 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 HP EliteBook 840 Aero G8?

The source lists a Phillips drive. Standard M1.6 heads otherwise take PH00 (Phillips) or T4–T5 (Torx), or 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 HP EliteBook 840 Aero G8?

TechSpareWarehouse (our own store) lists M1.6 x 3mm, M2 x 2mm and M2 x 2.5mm, which match lengths in the records above.