Stainless Steel Sleeper Screws
Products Description
Stainless Steel Sleeper Screws are core fastening components in the rail transit and electrical equipment fields. Made from stainless steel, they are suitable for the installation needs of sleepers, relays, and other facilities. Our products cover specifications such as 120mm Stainless Steel Screws and M4 Stainless Steel Screws, combining corrosion resistance and high load-bearing capacity. With various head styles, including Stainless Steel Wafer Head Screws, they can flexibly adapt to different scenarios.
Product Characteristics and Functions
Corrosion Resistance and Long-Term Stability
Made of A4 Stainless Bolts grade stainless steel, these bolts possess excellent resistance to acids, alkalis, and damp heat, allowing for long-term use in outdoor and humid environments in rail transit, preventing fastening failure due to rust.
High Load-Bearing Capacity
The threads of our M4 Stainless Steel Screws are precision rolled, with an engagement depth and friction suitable for the high load requirements of sleeper installation. They effectively resist track vibration and the impact of passing trains, ensuring structural stability.
Versatile Installation
The head design is compatible with common tools and supports the flat head style of Stainless Steel Wafer Head Screws, making it suitable for installation scenarios with limited space, such as sleepers or electrical equipment.
Low Maintenance Costs
Made of stainless steel, no additional rust prevention treatment is required. Subsequent maintenance only requires routine inspections, significantly reducing long-term operation and maintenance costs for rail transit facilities and electrical equipment.
Material Performance Advantages
Strength and Toughness Balance
A4 stainless steel for A4 Stainless Bolts has a tensile strength of 500-700 MPa, a yield strength of 200-300 MPa, and an elongation exceeding 40%, combining high strength with good plasticity to prevent brittle fracture during installation or overload.
Hardness and Wear Resistance
After cold working or heat treatment, the 120mm Stainless Steel Screw surface hardness can reach HRC 28-35, while the core retains toughness, ensuring the threads are wear-resistant and not easily deformed, suitable for repeated disassembly and assembly or high-friction applications.
Matching Coefficient of Thermal Expansion
The coefficient of thermal expansion of stainless steel is close to that of many engineering materials, reducing connection stress caused by temperature changes and avoiding loosening or cracking due to thermal cycling.
Non-magnetic or weakly magnetic
A4 stainless steel for Stainless Steel Wafer Head Screws is weakly magnetic or non-magnetic after solution treatment, making it suitable for precision instruments, medical MRI equipment electronic communication equipment, avoiding magnetic field interference.
Metal Forming Processes
| Cold Forging | The head and rod of Stainless Steel Sleeper Screws are processed using a cold heading process. Formed by die extrusion at room temperature, it maintains the original strength of the metal material and avoids performance loss caused by high-temperature processing. |
| Precision Thread Rolling | The threads of the M4 Stainless Steel Screws are machined using a thread rolling process. Compared to machined threads, thread rolling results in a smoother surface and a fuller tooth profile, improving thread engagement accuracy and load-bearing capacity. |
| Surface Passivation | The finished A4 Stainless Steel Bolts undergo passivation treatment, forming a dense oxide film on the stainless steel surface. This further enhances corrosion resistance, meeting the requirements of harsh environments such as outdoor and humid conditions. |
| Dimensional Calibration | All batches of products undergo precision measuring instrument calibration to ensure that the dimensional tolerances of specifications such as 120mm Stainless Steel Screws are controlled within industry standard ranges, guaranteeing installation compatibility. |
contact us
Hot Tags: stainless steel sleeper screws, China stainless steel sleeper screws manufacturers, suppliers, factory, Stainless Steel Pocket Screws, Self Forming Screw, Double Ended Hex Bolt, steel screw, Self Cutting Metal Screws, Ball End Grub Screw
You Might Also Like
Send Inquiry