450/650/720PCS Laptop Screw Set with Flat Countersunk Head, M1.4 x 16mm Cross Slot Threaded Machine Screws, A-Grade Carbon Steel 4.8 with Black Plating Finish for PC and Electronic Device Repair
Laptop Screw Set: M1.4 x 16mm Flat Head Machine Screws for PC and Electronic Device Repair

Assembling or repairing laptops and compact electronics requires fasteners that match the precise specifications of the original equipment. This screw set delivers a practical volume of M1.4 diameter, 16mm length machine screws with a flat countersunk head, designed specifically for these applications. The grade 4.8 carbon steel construction and black plating finish make these screws a functional choice for internal mounting of components, chassis panels, and brackets. Available in three different box quantities, the set allows technicians, IT support staff, or hobbyists to select the pack size that best fits their workflow, reducing the need to source these small, specialised screws individually for each job.
Features and Construction

This set is defined by its specific technical specifications, which are tailored to fit a common fastening requirement in modern consumer electronics. The construction focuses on providing a reliable, batch-consistent component for repeated use in repair and assembly environments.
Material and Build
The screws are manufactured from carbon steel graded at 4.8. This grade indicates a medium tensile strength, which is suitable for the load-bearing requirements of securing laptop casings, hard drive brackets, and internal framing without the risk of shearing or stripping the fine threads in softer materials like aluminium or plastic. The entire screw receives a surface treatment of black plating. This finish provides a uniform appearance and a basic layer of protection against rust, which is particularly relevant for components used inside electronic devices where condensation or minor environmental exposure could occur.
Size and Practical Fit
The critical dimensions of these screws are a 1.4mm diameter (M1.4) and a 16mm length. This combination is a standard size found in many laptops, small form-factor PCs, and other portable electronics for securing outer shells and internal boards. The flat, countersunk head is designed to sit flush or slightly recessed within a corresponding countersunk hole, creating a smooth surface that won't snag or interfere with other components. The cross-slot (Phillips) drive is universally recognised and allows for installation and removal with standard hand tools, supporting the stated 'hand twist' mode of action.
Uses and Placement

The primary application for these screws is in the realm of device maintenance and construction. Their specifications directly align with the fastening needs of commercial electronics, making them a staple component for relevant technical tasks.
Event or Professional Use
For IT service centres, computer repair shops, or electronics manufacturing lines, having a bulk supply of correctly sized screws is essential for efficiency. The available box sizes—450, 650, and 720 pieces—cater to different levels of professional usage. A larger box minimises restocking frequency for high-volume repair benches, while a smaller box might suit a specialised technician or a business with a lower daily throughput. The grade A product rating and standard 4h thread tolerance help ensure consistency from screw to screw, which is crucial for professional results and avoiding cross-threading during assembly.
Everyday Home Use
For the hobbyist or individual performing their own laptop upgrades and repairs, this set eliminates the frustration of missing or mismatched screws. When adding RAM, replacing a hard drive, or reassembling a case after cleaning, having an immediate supply of the right screw means a project can be completed without delay. The black finish also offers a cosmetic match for many internal components, maintaining the device's original aesthetic. The manual 'hand twist' installation method means no special power tools are required, making the set accessible for users with basic technical skills.
Benefits and Buying Value

The value of this product lies in its specificity, volume options, and the practical advantages it offers over sourcing screws individually or using incorrect sizes.
Reuse and Low Maintenance
As a consumable item in repair work, screws can become lost, damaged, or worn. This set provides a renewable resource, allowing multiple devices to be serviced from a single purchase. The carbon steel and plating offer sufficient durability for repeated installation and removal cycles typical in repair scenarios. By providing a dedicated stock of these screws, users can maintain their equipment properly without resorting to makeshift fixes that could damage components.
Why Choose This Product
Choosing this set comes down to matching the exact requirement. The M1.4 x 16mm specification with a flat head and cross drive is a direct fit for many documented repair guides. The three quantity options provide flexibility: the 450-piece box is suitable for occasional use, the 650-piece box offers a middle ground for more frequent tinkerers, and the 720-piece box is geared towards sustained professional or workshop use. The product delivers precisely what is stated—a batch of identical, specification-matched screws—which is the core requirement for organised, reliable electronic repair and assembly.
