Carbon Steel Machine Screw Set Flat Head Countersunk Cross for Laptop Repairs 1.4mm Diameter 16mm Length

During device repairs, finding the correct screw size and type can be time-consuming. This machine screw set addresses that challenge with a practical selection of flat-head countersunk screws designed for use in laptops and similar electronics. Each screw features a cross groove and is manufactured from carbon steel grade 4.8, with black plating for added protection. The set is available in three box sizes to suit varying project volumes, from occasional fixes to professional repair workshops.

Features and Construction

This screw set combines standard dimensions with a robust material grade, ensuring a reliable fit for common laptop fastening points. The following details outline the construction and practical specifications.

Material and Build

Each screw is made from carbon steel grade 4.8, which offers sufficient tensile strength for securing internal components of a laptop or other small device. The A-grade product classification indicates consistent threading and dimensional accuracy. The black plating surface treatment helps resist minor corrosion during normal use.

Size and Practical Fit

The screws have a 1.4mm diameter and 16mm length, compatible with standard cross-head screwdrivers. The countersunk flat head design sits flush when fully inserted, reducing protrusion and interference with surrounding components. Thread tolerance of 4h supports a secure engagement with standard threaded holes.

Uses and Placement

These screws are primarily intended for use in laptop assembly, repair, or maintenance. Their size and head style suit applications requiring a low-profile fastener.

Event or Professional Use

Repair technicians handling multiple devices will benefit from having a dedicated supply of matching screws. The 650 or 750-piece boxes provide enough stock for several repairs without frequent reordering. The consistent sizing helps maintain quality across work orders.

Everyday Home Use

For occasional DIY repairs or upgrading laptop components, the 450-piece box offers a cost-effective option. Users can replace lost or damaged screws quickly without searching for compatible alternatives. The hand-twist operation keeps the process straightforward.

Benefits and Buying Value

Choosing the right screw set saves time and reduces frustration during repairs. This product focuses on functional reliability and practical quantity options.

Reuse and Low Maintenance

Screws are designed for standard reuse during disassembly and reassembly. The black plating helps maintain appearance during repeated handling. No special storage conditions are needed beyond keeping the container sealed to avoid loss.

Why Choose This Product

The combination of carbon steel 4.8 grade, A-grade tolerance, and black plating offers a balance of strength and practicality for laptop-scale fastening tasks. The availability of three box sizes allows matching purchase quantity to actual demand.