Laptop Screw Set: Bulk Carbon Steel Flat Head Machine Screws in 1.4mm Diameter

This laptop screw set is a practical supply of small, standardised fasteners designed for assembly, maintenance, and repair work on electronic devices like laptops, compact PCs, and other light hardware. The screws are manufactured from carbon steel to grade 4.8, a common specification indicating a level of tensile strength appropriate for general-purpose fastening where high loads are not expected. Featuring a consistent 1.4mm diameter and 16mm length, these screws come with a standard thread profile and a 4h thread tolerance, ensuring predictable engagement and fit in pre-tapped holes or suitable materials. The black plating provides a finished look and a degree of surface protection. Packaged in bulk quantities of 450, 650, or 720 pieces, this set is aimed at users who need a reliable stock of identical screws for multiple projects or frequent repairs.

Features and Construction

The construction of these screws focuses on standardised dimensions and a material choice suited for light mechanical applications. The design facilitates manual installation and a clean final appearance.

Material and Build

These screws are made from carbon steel, classified as grade 4.8. This grade denotes a specific level of mechanical properties, including tensile strength, making it a typical choice for screws used in general assembly rather than high-stress structural applications. The surface undergoes a black plating process, which applies a thin metallic coating. This finish alters the screw's appearance to a dark grey or black colour and offers a basic barrier against rust, though its primary role is cosmetic for a uniform look. The product is listed as grade A, a general quality designation for fasteners meeting standard dimensional and material specifications.

Size and Practical Fit

Every screw in the set has a diameter of 1.4mm and a length of 16mm. This small diameter is particularly relevant for the compact internal spaces and delicate components found in laptops and similar electronics. The 16mm length provides sufficient thread engagement for securing panels, brackets, or components of moderate thickness. The thread specification is standard, and the tolerance is 4h, which refers to the acceptable variance in thread dimensions. This tolerance level helps ensure the screws mate correctly with standard nuts or threaded holes designed for M1.4 fasteners, reducing the risk of cross-threading during hand installation.

Uses and Placement

The specific dimensions and head type of these screws direct their use towards applications where a low-profile fastener is needed and where installation is often done manually for control.

Event or Professional Use

For IT technicians, repair shop professionals, or small-scale assembly lines working on laptops and compact electronics, this bulk screw set acts as a consumable component. The availability in large counts (450, 650, or 720 pieces) supports continuous repair workflows, reducing downtime spent sourcing individual screws. The consistency in size and the grade A classification mean each screw from the box is interchangeable, which is crucial for maintaining a standardised repair quality. The black finish can also be a visual match for many internal laptop components, maintaining the device's original aesthetic during service.

Everyday Home Use

For hobbyists or individuals performing DIY repairs on their own laptops, gaming consoles, or other small gadgets, this set provides the correct spare parts. The hand twist mode of action mentioned makes them suitable for users without specialised powered screwdrivers, allowing for careful, controlled tightening to avoid damaging delicate plastic threads or components. Having a bulk supply means that if a screw is lost or damaged during a repair, a direct replacement is immediately at hand, helping to complete the project without further delay.

Benefits and Buying Value

The value of this product lies in its specificity, quantity, and suitability for manual, precision tasks, offering convenience and reliability for a defined range of applications.

Reuse and Low Maintenance

As a set of simple mechanical fasteners, these screws are inherently reusable. They can be unscrewed and reused in other applications, provided the threads remain undamaged. The carbon steel material and black plating require minimal maintenance; keeping them in their original box or another dry container is sufficient to preserve their condition between uses. Their durability is tied to the inherent properties of grade 4.8 carbon steel, which is adequate for repeated installation and removal in non-corrosive environments typical of electronic device interiors.

Why Choose This Product

This product is chosen for its exact dimensional match (1.4mm x 16mm) and functional design (countersunk head, Phillips drive) for specific repair and assembly tasks. The primary advantage is having a large quantity of identical, specification-compliant screws, which eliminates the frustration of mismatched or incorrect fasteners during a project. The option to select from three different pack sizes (450, 650, 720 pieces) allows buyers to match their purchase to their expected usage volume, whether for a one-off repair or ongoing workshop stock.