SATA SC21202 1/4" Drive Hex Bit Socket 4mm

Key specs: 4mm hex size, 1/4" drive compatibility, chrome vanadium steel body, S2 steel insert bits, heat-treated for durability, corrosion-resistant chrome finish, and clearly stamped size markings for quick identification.

Durability comes from heat-treated construction, an S2 steel insert for strong bit retention, and a hardened chrome vanadium body with a corrosion-resistant chrome finish, making it suitable for demanding tasks.

Attach it to a 1/4" drive ratchet or wrench, ensure the 4mm bit is securely seated in the socket (retention features help prevent slipping), and turn with steady torque for fastening or loosening.

Yes. The compact design and precise 4mm hex bit help in tight spaces, while the clear size markings speed up selection, making it suitable for electronics, automotive, and assembly tasks.

The precisely sized 4mm hex bit combined with secure bit retention minimizes cam-out, reducing the risk of stripping fasteners during use.

This socket features large stamped size markings for fast and easy size identification, so you can grab the correct tool without hesitation.

Consider these alternatives on Fepy.com: • SATA SC21201 1/4" Drive Hex Bit Socket 3mm — https://fepy.com/product/sata-sc21201-14-drive-hex-bit-socket-3mm • SATA SC21203 1/4" Drive Hex Bit Socket 5mm — https://fepy.com/product/sata-sc21203-14-drive-hex-bit-socket-5mm • SATA SC21204 1/4" Drive Hex Bit Socket 2.5mm — https://fepy.com/product/sata-sc21204-14-drive-hex-bit-socket-25mm

This model uses chrome vanadium steel with an S2 steel insert and a corrosion-resistant chrome finish, offering strong torque transfer, secure retention, and long life. Other 4mm sockets on Fepy may vary in retention systems, material alloys, and finishes, which can affect durability and ease of use.

Wipe it clean after use, keep it dry, and store it in a dry toolbox. The chrome finish provides corrosion resistance, but avoiding prolonged exposure to moisture and harsh chemicals will help preserve the finish and functionality.

Yes. Its compact size and lightweight design make it easy to carry with other sockets, making it convenient for on-the-go repairs and tight-space work.

Tasks involving 4mm hex fasteners in tight spaces—such as engine bay adjustments, electronics enclosures, appliance repair, and precision assembly—will benefit from the precise fit, secure retention, and efficient torque transfer of this socket.