Flat head knurled hand screw is a fastening part with unique structure and function that is directly operated by hand. Its flat head shape, combined with knurled design, plays an important role in many scenarios. The following is a detailed introduction:
• Appearance features
Head design: The screw head is flat, with a flat top surface and a large fitting area with the installation surface. After installation, the surface is flat and will not protrude like a high head screw, which can avoid collisions and is also convenient for use in scenarios with space limitations or pursuit of surface flatness.
Rolling process: The surface of the head is treated with rolling to form straight or mesh patterns, increasing surface friction and making it easier and more stable for manual operation without the need for tools such as screwdrivers.
• Specification parameters
Thread specifications: Common specifications include M2, M3, M4, M5, M6, etc. M represents ordinary metric threads, and the number corresponds to the nominal diameter, which can meet different fastening needs.
Length range: The length is usually between 3mm and 50mm. Shorter ones are suitable for fastening thin plates, while longer ones are used for connecting thicker or multi-layer components, and can flexibly adapt to various installation scenarios.
• Materials and surface treatment
Material type: The main materials include stainless steel, carbon steel, brass, etc. Stainless steel material is corrosion-resistant and suitable for humid, acidic and alkaline environments; Carbon steel has high strength and can be improved in performance through heat treatment; Brass has good conductivity and thermal conductivity, and is commonly used in the electrical and electronic fields.
Surface treatment: Various surface treatments are carried out to enhance rust prevention, wear resistance, and other properties. Galvanizing can form a protective film on the surface, improving corrosion resistance; Nickel plating can increase aesthetics and wear resistance; Blackening treatment forms an oxide film on the surface, which has both anti rust and decorative effects.
• Application scenarios
Electronic appliances: Used in devices such as computers, televisions, and audio systems to secure components such as casings and internal circuit boards, facilitating installation, maintenance, and disassembly, while maintaining a smooth and aesthetically pleasing surface of the equipment.
Instrumentation: This screw is commonly used in the assembly of various precision instruments to avoid damage to the surface of the instrument. Its precise specifications also ensure the stability and reliability of the installation of internal components of the instrument.
Furniture assembly: In panel furniture and small wooden crafts, it is used to connect boards, which is easy and fast to operate by hand. After installation, the surface is flat and does not affect the overall aesthetics.
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