Rounded head Philips drive female threaded binding nut

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M3, M4, M5, M6 Rounded head Philips drive female threaded binding nut, Cross Flat Head Cold Forged Internal Thread Screws are screws designed for radiator mounting. Hereinafter we will refer to them asRounded head Philips drive female threaded binding nut. These screws are made of high-quality 304 stainless steel, using cold forging process and internal thread structure, which are very suitable for radiator mounting systems that require high precision and corrosion resistance. These screws are compatible with M3 to M6 specifications and are tailored for applications in high precision and harsh environments.

Product Picture

 

Material properties: In terms of corrosion resistance, these screws are made of 304 stainless steel (06Cr19Ni10), which has excellent acid resistance, alkali resistance, salt spray resistance and oxidation resistance, and are very suitable for humid, high temperature or chemical environments. In terms of mechanical properties, these screws have a tensile strength of ≥520MPa and a hardness of HV200-250, which combines toughness and strength for medium load applications.

Manufacturing advantages: These screws are cold forged to ensure high thread accuracy (up to 6g/6H grade), smooth surface without burrs, dense internal grain structure, and significantly enhanced fatigue resistance. The multi-step design provides effective axial alignment and anti-loosening function, reducing the need for additional washers.

Raw Material

Cold Forging

Threading

Auto Lathe

Auto Lathe

Table Lathe

CNC Lathe

Quality Checking

Inspection

Packing

Features: The cross flat head design makes the screw flush with the surface, which is ideal for applications that require high surface finish and no protruding interference. These screws have cutting grooves at the end to tap their own threads on plastic or thin metal sheets (such as aluminum alloys), so pre-tapping is not required. However, pre-drilled or threaded holes are required to ensure a firm and stable connection.

Scenario application:

Precision electronics: The anti-electromagnetic interference performance of 304 stainless steel is ideal for sensitive equipment and is an ideal choice for fixing circuit boards and heat sinks (such as CPU/GPU cooling modules).

Mechanical and automotive manufacturing: The stepped design is used for engine components, sensor brackets and small motor assemblies, which is ideal for stacking and fixing multiple components.

Clipers Micrometer

Torque

Depth Micrometer

Plug

Thread Guage

Ring Guage

Hardness Tester

Projector

Salt Spray Testing

Outdoor and humid environments: 304 stainless steel's salt spray resistance ensures its durability in harsh conditions, making it an ideal choice for photovoltaic brackets, outdoor lighting fixtures, and marine equipment.

Home appliances and furniture: Suitable for washing machine drums, air conditioner housings, and high-end furniture assembly, the flat head ensures a beautiful appearance.

Medical equipment: 304 stainless steel is easy to clean and resistant to contamination, making it an ideal choice for non-implantable devices such as test instruments.

Installation steps and precautions: Rounded head Philips drive female threaded binding nut installation should be aligned with the step, ensuring that the step portion of the screw is completely aligned with the contact surface of the component to prevent tilting and stress concentration. Tighten progressively: Pre-tighten manually first, then gradually increase the torque until the specified value is reached to prevent thread stripping or breakage. In high temperature or high load environments, apply molybdenum disulfide or a special anti-seize agent to the threads to prevent the screws from getting stuck. Avoid direct contact with carbon steel parts to prevent electrochemical corrosion (use insulating washers if necessary) In humid environments, check the screws for corrosion every 6-12 months. If necessary, replace with 316 stainless steel to enhance corrosion resistance.

If you need to use radiator step internal thread screws, please contact us and we will provide you with the best solution to meet your product needs.