Brass cylindrical head slotted screws are precision micro fasteners, commonly used for fixing electronic products, precision instruments, glasses, watches, or small machinery. Its core functional design revolves around material characteristics, mechanical properties, and scene adaptation.
1. Core Function Positioning
Micro Precision Fixation
Applicable scenarios: electronic products, precision instruments, small machinery, and other space-sensitive scenarios.
Size coverage: M1 to M3 diameter, length is usually 2-10mm, which can meet the assembly needs of tiny structures.
Reliable conductivity and corrosion resistance
Brass H59 and H62 materials provide medium conductivity and are suitable for electronic devices that need grounding or signal transmission. The natural oxidation resistance is better than carbon steel, suitable for humid environments, and the surface can be nickel-plated or tin-plated for enhanced protection.
Efficient manual assembly
The slotted design is compatible with standard slotted screwdrivers, simplifying the operation process and avoiding the risk of damage to micro parts by power tools. The cylindrical head design provides moderate contact pressure to avoid deformation of plastic or thin metal parts.
2. Key performance parameters
Tensile strength: H62 brass is about 400MPa, which is higher than plastic screws and lower than stainless steel screws.
Torque bearing: M1: 0.05N·m; M3: 0.3N·m, suitable for low-frequency manual adjustment.
Working temperature range: -30℃~120℃ (plating can be extended to 200℃), Avoid high temperature and high load scenarios.
3. Scenario-based adaptation design
Electronic field: non-magnetic characteristics avoid interference with precision sensors, and brass has good compatibility with PCB pads.
Maintenance friendliness: The slot structure is easy to clean and can still be removed by impact after rusting.
Appearance coordination: polished brass is suitable for retro equipment or decorative fixation, such as lamps and musical instrument accessories.
4. Limitation description
Strength limit: not suitable for scenarios with strong vibration or high-frequency disassembly.
Slot defect: The slot is easy to slip.
5. Selection Recommendations
Preferably choose the nickel-plated version to enhance wear resistance. For specifications below M1.4, it is recommended to use thread glue to prevent loosening. In cost-sensitive and non-critical structures, you can choose the unplated basic version.
The core value of this type of screw is to balance miniaturization, conductivity requirements, and low cost. It is a typical application representative of brass materials in precision machinery.
