Laptop Screw Set in Black-Plated Carbon Steel with Countersunk Head and Cross Groove

This laptop screw set offers a practical, bulk-supplied hardware solution for a range of fastening needs, particularly within electronics repair, laptop maintenance, and general assembly tasks. The core value lies in providing a high quantity of standardised, A-grade machine screws, eliminating the time spent sourcing individual components. Available in three distinct pack sizes—450 pieces, 650 pieces, or 720 pieces—it allows users to match the quantity to their project scope or inventory requirements. Each screw is manufactured to consistent specifications, featuring a 1.4mm diameter, a 16mm length, and a standard thread with a 4h tolerance, ensuring reliable fit in pre-defined applications. The black plating provides a uniform finish, while the carbon steel construction graded at 4.8 offers the necessary strength for typical fastening duties.

Features and Construction

The design and build of these screws are focused on functionality and compatibility with common manual tools. The construction prioritises a standardised form factor suited to electronics and precision hardware, where consistent sizing is critical.

Material and Build

The screws are fabricated from carbon steel, a material chosen for its balance of strength and machinability in standard fastener production. The specific material grade is 4.8, which indicates its mechanical property class. A black plating has been applied as a surface treatment, which serves primarily as a finish rather than a heavy-duty protective coating. The product is designated as A grade, reflecting a standard level of quality control for such components.

Size and Practical Fit

The key dimensional specifications are a screw diameter of 1.4mm and a length of 16mm. This size is commonly encountered in the internal assembly of laptops, small electronics, and other compact devices. The thread follows a standard specification, and the manufacturing tolerance is defined as 4h, which relates to the fit between the internal and external threads. This standardisation means the screws are intended for use in pre-tapped holes or with matching nuts designed for M1.4 fasteners.

Uses and Placement

The application scope for these screws is defined by their size, head style, and material. They are a general-purpose fastener within the domain of small-scale assembly and repair work.

Event or Professional Use

For professionals or enthusiasts engaged in electronics repair, such as fixing laptops, reassembling small gadgets, or building custom computing hardware, this set acts as a reliable parts bin staple. The high piece count in each box means a single purchase can support multiple repair jobs or serve as a backup inventory, reducing downtime spent ordering replacement screws. The countersunk head design is specifically useful in applications where a flush or low-profile finish is required, such as when a screw head must sit flat against or within a chassis component.

Everyday Home Use

For general household DIY, hobbyist projects, or fixing loose fittings on small items, these screws provide a versatile option. The cross-drive groove and hand-twist mode of action make them accessible for anyone with a basic Phillips-head screwdriver. The black finish can be a visually discreet choice for repairs where the fastener might be visible. However, their primary design intent remains rooted in small-scale mechanical and electronic assembly rather than heavy structural woodwork or construction.

Benefits and Buying Value

The value proposition centres on convenience, standardisation, and having the right part on hand. It addresses the common frustration of not having a matching screw when needed.

Reuse and Low Maintenance

As a consumable hardware item, the main aspect of reuse is simply having a large supply available for multiple projects over time. The screws themselves, being carbon steel, can be reused in non-critical applications if removed carefully. Maintenance is minimal; storing the unused screws in the supplied box in a dry location will help preserve the black plating and prevent corrosion. No specialist care instructions are required beyond basic sensible storage.

Why Choose This Product

This product is a suitable choice for users who need a bulk supply of specific, small-diameter machine screws with a countersunk head. The clear differentiators are the precise size (1.4mm x 16mm), the black-plated finish, the choice of three high piece counts, and the standardised thread for reliable fit. It is a focused purchase for a known need in electronics repair or small assembly, rather than a general assortment of random screws. The A-grade rating and defined material grade (4.8) provide a baseline expectation of consistency and fitness for purpose.