HP 255 G7 screw size

HP 255 G7 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). This device also uses M2.5 / M3, so measure each screw rather than assuming they match.
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 records span 2–9 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 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 HP 255 G7, closest length match first.

• Dell Inspiron 300m also M2 × 3 mm
• Lenovo ideapad 130-14IKB also M2.5 × 2.5 mm
• Lenovo ideapad 320-15IAP also M2 × 3 mm
• Lenovo ThinkPad L540 also M2 × 3 mm
• Lenovo ThinkPad Edge E431 also M2 × 3 mm
• Lenovo LOQ 15APH8 also M2 × 3 mm
• Acer Aspire 1650 also M2.5 × 6 mm
• HP ProBook 4 G1iR 16 inch also M2 × 2 mm

Questions about HP 255 G7 screws

What size screw does HP 255 G7 use?

M2 × 2 mm for hinge (qty 1, broadhead, Phillips); M2 × 3 mm for card reader (qty 1, Phillips); M2 × 3 mm for display (qty 4, Phillips); M2 × 3 mm for hard drive (qty 1, Phillips); M2 × 3 mm for heat sink (qty 6, Phillips); M2 × 3 mm for optical drive (qty 1, Phillips); M2 × 3 mm for SSD (qty 1, Phillips); M2 × 3 mm for system board (qty 2, Phillips); M2 × 3 mm for touchpad (qty 2, Phillips); M2 × 3 mm for unspecified (qty 5, Phillips); M2 × 3 mm for wireless card (qty 1, Phillips); M2 × 8 mm for battery (qty 3, Phillips); M2.5 × 2.5 mm for hinge (qty 3, Phillips); M2.5 × 6 mm for fan (qty 1, Phillips); M2.5 × 6 mm for hinge (qty 4, Phillips); M2.5 × 9 mm for base cover (qty 10, Phillips); M2.

How long are the screws in HP 255 G7?

The records range from 2 to 9 mm depending on the position, so match each screw to its own hole.

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 HP 255 G7?

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.

Where can I buy replacement screws for HP 255 G7?

TechSpareWarehouse (our own store) lists M2 x 2mm, M2 x 3mm and M2 x 8mm, which match lengths in the records above.