Laptop Screw Size Guide – HP, Dell, Asus, Lenovo, and More
When repairing or assembling a laptop, one of the smallest yet most important components you’ll handle is the screw.
Using the wrong size can lead to broken threads, unstable panels, or even internal damage.
Here’s a detailed guide to help you understand laptop screw sizes by brand.
Laptop Screw Size Comparison Chart
| Brand | Common Thread Diameter | Common Lengths | Head Type | Used In |
| HP | M2.5 mm / M3 mm | 3 mm, 4 mm, 5 mm, 6 mm, up to 15 mm | Phillips (Cross) | Base panel, hinges, SSD/HDD bracket |
| Dell | M2.5 mm / M3 mm | 4 mm, 5 mm, 6 mm | Phillips / Torx | Back cover, keyboard frame, bottom case |
| Asus | M2 mm / M2.5 mm / M3 mm | 3 mm – 6 mm | Phillips | Base cover, screen hinge, internal mount |
| Lenovo | M2.5 mm / M3 mm | 3 mm, 4 mm, 5 mm, 6 mm | Phillips / Torx | Back panel, palm rest, hinges |
| Acer | M2 mm / M2.5 mm | 3 mm – 8 mm | Phillips | Keyboard panel, display, battery bay |
| Samsung | M2 mm / M2.5 mm | 3 mm – 5 mm | Phillips | Base panel, battery cover |
| Toshiba | M2.5 mm / M3 mm | 3 mm – 6 mm | Phillips | Bottom case, optical drive area |
1. HP Laptop Screws
HP laptops generally use:
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Thread size: M2.5 mm or M3 mm
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Length: 3 mm to 15 mm
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Head Type: Phillips
Different screw lengths are used for different parts — short ones for the keyboard section and long ones for hinges or the bottom cover.
Tip:
While disassembling, place each screw on a magnetic pad labeled by section (hinge, bottom, keyboard). This prevents mixing them up.
2. Dell Laptop Screws
Dell laptops mostly follow standard metric screw types:
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Thread size: M2.5 mm – M3 mm
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Length: 4–6 mm
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Common Head Type: Phillips or Torx (in newer models)
Tip:
Dell laptops often use different screw heads for outer and inner parts — keep matching bits ready while opening.
3. Asus Laptop Screws
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Thread size: M2 mm – M3 mm
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Length: 3–6 mm
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Head Type: Phillips
Asus models often include very fine-thread screws for display and hinge sections — handle gently to avoid stripping.
Tip:
Check your laptop’s exact model before ordering screws; many Asus parts have model-specific kits available online.
4. Lenovo Laptop Screws
Lenovo makes screw identification easier with small symbols near screw holes:
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Square symbol: Short screw
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Triangle symbol: Long screw
Sizes:
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Thread: M2.5 mm / M3 mm
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Length: 3 mm – 6 mm
Tip:
Always check those markings before reassembly — using a long screw where a short one belongs can crack the motherboard area.
5. Other Laptop Brands
Most other laptops — like Acer, Samsung, Toshiba, MSI — use a similar range:
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Thread Diameter: M2 mm to M3 mm
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Length: 3 mm to 8 mm
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Head Type: Phillips
Tip:
If you repair multiple brands, keep a All in One Laptop Screw Kit this kit includes 610 premium-quality screws in 15 popular sizes, ensuring you always have the right fit for every repair or upgrade.
Quick Reference – Universal Laptop Screw Sizes
| Screw Code | Diameter(mm) | Common Use |
| M2 × 3 mm | 2.0 | Internal frame / SSD screw |
| M2.5 × 4 mm | 2.5 | Keyboard / small cover |
| M2.5 × 5 mm | 2.5 | Base / mid-frame |
| M3 × 5 mm | 3.0 | Hinges / display mount |
| M3 × 6 mm | 3.0 | Hard drive / optical bay |
| M3 × 8 mm | 3.0 | Structural Screw / bracket |
Tips for Technician
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Always use a magnetic screwdriver and a screw organizer tray.
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Do not overtighten — aluminum threads strip easily.
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Label screw positions or take pictures while disassembling.
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Replace missing screws immediately to avoid vibration issues.
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For professional work, keep a Laptop Mix Screw Sample Packet — it saves time and fits 95% of laptop models.
Conclusion
Laptop screws may look tiny, but they hold your machine together — literally.
Knowing the right screw size saves time, prevents damage, and ensures a clean, professional repair job.
Whether you’re fixing an HP, Dell, Asus, Lenovo, or any other brand, Every size screw you can find and purchase on our website.
