HP ProBook 450 15.6 inch G9 screw size

HP ProBook 450 15.6 inch G9 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 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 2–4 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 ProBook 450 15.6 inch G9, closest length match first.

• Lenovo IdeaPad s940-14IIL also M2 × 2 mm
• Dell Inspiron 15 5515 also M1.6 × 2 mm
• Dell Inspiron 15 3568 also M2.5 × 2.5 mm
• HP EliteBook 865 16 inch G11 also M1.6 × 2 mm
• Dell Inspiron 15 3520 also M2 × 2 mm
• Lenovo ThinkPad Iseries 1400 also M2 × 4 mm
• HP EliteBook 828 G3 also M2.5 × 2.5 mm
• Lenovo ideapad 320-15AST also M2.5 × 2.5 mm

Questions about HP ProBook 450 15.6 inch G9 screws

What size screw does HP ProBook 450 15.6 inch G9 use?

M1.6 × 2 mm for touchpad (qty 2, Phillips); M2 × 2 mm for speaker (qty 4, Phillips); M2 × 2 mm for touchpad (qty 4, Phillips); M2 × 2.5 mm for power button (qty 1, Phillips); M2 × 2.5 mm for SSD (qty 1, Phillips); M2 × 2.5 mm for system board (qty 4, 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 base cover (qty 2, captive, Phillips); M2 × 4 mm for battery (qty 6, Phillips); M2 × 4 mm for system board (qty 3, Phillips); M2.5 × 2.5 mm for hinge (qty 2, Phillips); M2.5 × 4 mm for display (qty 4, Phillips); M2.5 × 4 mm for hinge (qty 3, Phillips).

How long are the screws in HP ProBook 450 15.6 inch G9?

The records range from 2 to 4 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 ProBook 450 15.6 inch G9?

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 ProBook 450 15.6 inch G9?

TechSpareWarehouse (our own store) lists M2 x 2mm, M2 x 2.5mm and M2 x 4mm, which match lengths in the records above.