
| Brand | Unbrako |
| Product Type | Socket Screw |
| Head Type | Socket Head Cap |
| Diameter | 4 MM |
| Length | 55 MM |
| Quantity Per Box | 20 Pcs |
| Color | Black |
| Material | High Tensile Steel |
The Unbrako 4 X 55 MM Socket Head Cap Screw (Allen Bolt) is a high-quality fastener designed for precision and durability in demanding industrial and mechanical applications. Manufactured by Unbrako, a leading name in fastener technology, this socket head cap screw combines strength with precision. With its metric dimensions of 4 mm in diameter and 55 mm in length, and available in a bulk quantity of 200 pieces, it is well-suited for various projects requiring reliable and secure fastening solutions.
Key Features
- Robust Alloy Steel Construction
- Crafted from premium alloy steel, the Unbrako Socket Head Cap Screw offers exceptional tensile strength and long-lasting durability. The steel undergoes a heat treatment process to enhance its performance under high-stress conditions, providing resistance to wear and deformation. This robust construction ensures reliable performance even in demanding applications.
- Exact Metric Dimensions
- The socket head cap screw features precise metric dimensions of 4 mm in diameter and 55 mm in length. This accuracy ensures compatibility with a wide range of components and systems, both domestic and international. The precisely threaded design provides a secure fit, minimizing the risk of loosening and ensuring a stable connection.
- Compact Low-Profile Design
- The compact, low-profile socket head design allows the screw to sit flush with the surface once installed. This design is particularly advantageous in applications with limited space, such as machinery, automotive parts, or electronic devices. The flush finish not only improves the aesthetic but also facilitates easier access in tight or confined spaces.
- Enhanced Corrosion Resistance
- The Unbrako Socket Head Cap Screw is treated with a specialized surface coating that enhances its resistance to corrosion. This feature makes the screw suitable for use in environments exposed to moisture, chemicals, or extreme temperatures. The corrosion-resistant finish helps maintain the screw’s strength and appearance over time, even in harsh conditions.
- Ease of Installation with High Torque Capability
- Designed for use with a hex wrench, the socket head allows for straightforward installation and provides a secure grip, reducing the risk of slippage. The design also supports the application of higher torque, ensuring a strong and reliable fit. This feature is particularly valuable for applications that require high precision and strength.
The Unbrako 4 X 55 MM Socket Head Cap Screw (Allen Bolt) is a high-performance fastener that excels in strength, precision, and durability. Its premium alloy steel construction, exact metric sizing, and enhanced corrosion resistance make it an excellent choice for a range of industrial and mechanical applications. With 200 screws per package, you are well-prepared for both extensive and specialized projects. Choose Unbrako for fasteners that deliver exceptional performance and reliability, ensuring successful results in every application.


