What is the tensile strength of these screws?

These are generally manufactured to a property class suitable for electronics and light mechanical assembly. For high-load structural applications, a higher-grade fastener is recommended. Contact us to confirm specific mechanical properties.

M1.4–M5 Nickel-Plated Countersunk Machine Screws for Laptop, Hard Drive, Keyboard, PC

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M1.4–M5 Nickel-Plated Countersunk Machine Screws for Laptop, Hard Drive, Keyboard, PC

HomeDIYer

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By HomeDIYer®

Thread diameter x Length(Include Head): M1.4 x 3mm

Pack Quantity(Pcs): 100

Price:

$6.51 USD

Stock:

In stock (500 units), ready to be shipped

Quantity:

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M1.4–M5 Nickel-Plated Countersunk Machine Screws — Flush-Mount Precision for Electronics Assembly

Anyone who has cracked open a laptop, swapped a hard drive, or rebuilt a mechanical keyboard knows the frustration of stripped or missing screws that leave panels rattling or components loose. These nickel-plated countersunk machine screws are designed for electronics technicians, PC builders, and DIY repair enthusiasts who need reliable, flush-seating fasteners in small metric sizes.

Each pack contains countersunk (flat-head) machine screws in your chosen thread diameter and length. Thread diameters range from M1.4 to M5, with lengths from 3mm (≈1/8") to 20mm (≈25/32"), available in pack quantities of 10 to 1,000 pieces. The nickel plating provides a clean silver finish and moderate corrosion resistance suited to indoor electronics environments.

These screws are widely used in laptop chassis assembly, 2.5" and 3.5" hard drive mounting, mechanical keyboard plate fastening, PC case panel installation, and precision instrument enclosures — anywhere a flush, low-profile fastener is required in a metric tapped hole.

🔩 Compatibility: ISO metric thread standard (M-series). Compatible with standard metric tapped holes and metric nuts. Not compatible with UNC/UNF inch-standard threads. Verify your thread diameter and pitch before ordering.

✅ Key Features of These Nickel-Plated Countersunk Machine Screws

📐Flush-Mount Countersunk Head — The flat (countersunk) head sits flush with or below the surface, eliminating protrusions that can snag cables or prevent panel closure in tight laptop and PC enclosures.
✨Nickel-Plated Finish — The electroplated nickel coating delivers a uniform silver appearance and moderate corrosion resistance, keeping screws looking clean through repeated assembly and disassembly cycles.
🔬Wide Size Range: M1.4 to M5 — Covers the most common metric thread diameters used in consumer electronics, from ultra-fine M1.4 screws found in smartphone-class devices up to M5 for heavier PC hardware mounting.
📏Multiple Length Options: 3mm–20mm — Choose the exact length for your application, from 3mm (≈1/8") shallow-panel fasteners to 20mm (≈25/32") for deeper chassis or stacked-material assemblies.
📦Flexible Pack Quantities — Available in packs of 10 to 1,000 pieces, so hobbyists can grab a small quantity for a single repair while repair shops and assemblers can stock up cost-effectively.
🖥️Electronics-Assembly Ready — Sized and finished for laptop hard drive mounting screws, mechanical keyboard plate screws, and PC case panel fasteners — the everyday fasteners that keep precision electronics together.

📐 Technical Specifications — Nickel-Plated Countersunk Machine Screws

Product Type	Countersunk (Flat Head) Machine Screw
Thread Standard	ISO Metric (M-series)
Thread Diameter Range	M1.4, M1.6, M2, M2.5, M3, M4, M5
Length Range (incl. head)	3mm (≈1/8") – 20mm (≈25/32")
Head Type	Countersunk / Flat Head
Head Angle	Typically 90° (standard metric countersunk)
Drive Type	See variant options / product images
Material	Steel with Nickel Plating
Finish	Electroplated Nickel (silver tone)
Corrosion Resistance	Moderate — suitable for indoor/dry environments
Property Class	Contact us to confirm
Pack Quantity Options	10, 20, 50, 100, 150, 200, 250, 300, 400, 500, 1000 pcs
Typical Applications	Laptop chassis, hard drive mounting, keyboard plates, PC cases, precision instruments
Thread Pitch	See variant options (standard ISO metric coarse pitch)

⚠️ Sizing Note: The length listed for each variant includes the head. Always verify thread diameter, length, and drive type against your device's service manual or an existing screw before ordering.

❓ Frequently Asked Questions

How do I choose the right size countersunk machine screw for my laptop or hard drive?

Measure the thread diameter of the existing screw or the tapped hole with a caliper. For length, measure the depth of the hole or the thickness of the material being fastened — the screw length should generally match or be slightly shorter. For example, M2 x 4mm (≈5/32" x 5/32") is commonly used in laptop chassis, while M3 x 6mm (≈1/8" x 1/4") is typical for 2.5" hard drives. When in doubt, check your device's service manual.

What thread standard do these countersunk machine screws use?

These screws follow the ISO metric thread standard (M-series). They are compatible with standard metric tapped holes and metric nuts. They are not compatible with UNC/UNF inch-standard threads commonly found in older American-made equipment.

What is the head angle of the countersunk head?

These screws typically feature a 90° countersunk (flat) head angle, which is the standard for metric machine screws used in electronics and precision assemblies. This allows the head to sit flush with or below the surface of the material, which is critical for panel fit in laptops and PC cases.

Are these screws suitable for outdoor or corrosive environments?

The nickel plating provides moderate corrosion resistance suitable for indoor electronics and dry environments. For outdoor, marine, or high-humidity applications, stainless steel screws are generally recommended. These are best suited for laptop, PC, and electronics assembly use indoors.

What drive type do these screws use?

These countersunk machine screws typically use a Phillips (cross) drive, which is standard for electronics assembly. Please confirm the drive type in the product images or contact us if you need a specific drive style such as JIS or slotted.

What is the tensile strength or load capacity of these screws?

These are generally manufactured to a property class suitable for electronics and light mechanical assembly. In most cases, they are adequate for securing laptop panels, hard drives, and keyboard plates. For high-load structural applications, a higher-grade fastener is recommended. Contact us to confirm specific mechanical properties for your application.

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Can I buy a mixed assortment of different sizes in one order?

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Currently each variant is sold by a single size and pack quantity. You can add multiple variants to your cart to build your own assortment across sizes and lengths. If you need a custom kit or bulk mixed order, feel free to contact us and we will do our best to help.

🛒 Select your thread diameter, length, and pack quantity above, then add to cart — ships from our US warehouse.