Laptop Screw Set 450/650/720PCS Flat Head Machine Countersunk Cross Screws Black Plated Carbon Steel 4.8 Grade A 1.4mm Diameter 16mm Length Standard Thread Hand Twist Fit for Computer and Electronic Repair
Laptop Screw Set for Computer Repair: 450, 650, or 720 Countersunk Machine Screws

This laptop screw set delivers a practical, counted assortment of black-plated machine screws, specifically intended for securing components within laptops and other compact electronic devices. Choosing between the 450, 650, or 720-piece options allows you to match the kit size to your expected repair frequency or project scope, providing a ready supply of fasteners without unnecessary bulk. The core specifications – a 1.4mm diameter and 16mm length – are common in laptop chassis, hard drive cages, and other internal assemblies, making this set a relevant tool for maintenance and DIY computer work. Each screw features a standard thread for reliable engagement and is supplied for straightforward hand-tool installation.
Features and Construction

This product is defined by its precise, source-supported specifications and its straightforward, functional design for assembly tasks.
Material and Build
The screws are manufactured from carbon steel, designated with a 4.8 material grade. This grade indicates a standard tensile strength suitable for general-purpose structural applications, such as fastening non-load-bearing components within a laptop frame. The surface has undergone a black plating treatment, a common finish that provides a degree of corrosion resistance and helps the screws visually blend with dark-coloured internal casings. The product is specified as A grade, confirming it meets the defined quality standards for its category.
Size and Practical Fit
The key dimensional specifications are a screw diameter of 1.4mm and a length of 16mm. This combination is a typical size found in many laptops for securing panels, connectors, and smaller internal brackets. The head is a countersunk (flat head) type, designed to sit flush with or below the surface of the material, which is important in tight internal spaces. The cross-groove (Phillips) drive is universally compatible with standard hand screwdrivers and many precision driver bits, facilitating installation and removal without specialised tools.
Uses and Placement

The set is targeted at scenarios where small, standardised fasteners are needed for assembly or repair work, primarily in the realm of consumer electronics.
Event or Professional Use
For IT technicians, computer repair shops, or educational workshops, having a pre-sorted supply of common laptop screws can streamline workflow. The 720-piece option offers the highest volume for high-frequency repair environments, reducing time spent sourcing individual screws. The consistent 1.4mm x 16mm size and black finish mean the screws are a direct replacement for many OEM fasteners, supporting efficient repair services for a range of laptop models where this size is applicable.
Everyday Home Use
For the home DIY enthusiast or anyone performing their own laptop upgrades (such as adding RAM, replacing a hard drive with an SSD, or cleaning internal fans), this set provides the correct screws to reassemble the device. The 450-piece option offers a sensible quantity for occasional use, ensuring spare screws are available if any are lost during the process. The hand-twist mode of action means no power tools are required, making the task accessible and reducing the risk of overtightening and damaging delicate components.
Benefits and Buying Value

The value of this product lies in its convenience, specification clarity, and applicability to a defined repair niche.
Reuse and Low Maintenance
As a consumable repair item, the primary value is in having the right fastener on hand when needed. The carbon steel construction with black plating is sufficient for the protected, low-stress environment inside an electronic device, with no special care instructions required. The boxed packaging keeps the screws organised, and the substantial count in each set means a single purchase can support multiple repair jobs over time, offering a practical alternative to purchasing tiny quantities or cannibalising screws from other devices.
Why Choose This Product
This screw set is distinguished by its clear specification of size (1.4mm x 16mm), material (carbon steel 4.8), and head type (countersunk cross), allowing you to match it precisely to your project requirements. The option to select a box size (450, 650, or 720 pieces) provides control over inventory and cost. It addresses the specific need for a reliable, correctly sized fastener in laptop repair, avoiding the frustration of using ill-fitting screws that can strip threads or not seat properly.
