Electrical Terminal Screws
Products Description
Electrical terminal screws are fastening components used in electrical terminals, crimp blocks, and terminals, primarily for:
firmly crimping metal conductors to ensure a reliable power supply;
maintaining long-term mechanical pressure at terminals to prevent loosening and arcing risks;
adapting to the crimping requirements of conductors with different wire gauges (AWG/mm²);
enabling rapid assembly and maintenance of internal or field wiring;
Though small, they are the "pressure foundation" and "safety node" of electrical connection systems; the quality of a single Block Terminal can significantly impact the lifespan of the entire device.
Core Substrate: Brass / Copper / 304/316 Stainless Steel
"Selection Logic": Brass combines excellent conductivity and corrosion resistance, offering high cost-effectiveness and suitability for most industrial electrical applications; Copper boasts the highest conductivity (≥58MS/m), making it suitable for high-current, low-loss applications (such as new energy inverters and high-power contactors); 304/316 stainless steel exhibits extremely strong corrosion resistance, suitable for highly corrosive environments such as marine engineering and chemical equipment, with 316 stainless steel offering 50% better salt spray resistance than 304; Compared to ordinary steel, our selected substrates have an impurity content ≤0.05%, resulting in more stable conductivity and mechanical strength, avoiding poor conductivity or breakage due to material defects.
"Performance Advantages": High conductivity, reducing energy loss; excellent mechanical strength, able to withstand tightening torque without deformation; good temperature resistance, no risk of brittleness or softening in environments ranging from -55℃ to 150℃.
"Differentiated Value": Precisely matching substrates to current ratings and environmental requirements avoids a "one-size-fits-all" approach. The selection of materials can lead to either over- or under-performance, achieving a balance between cost and performance.
Surface Treatment Materials: Silver Plating / Tin Plating / Zinc Plating
Silver Plating
Highest conductivity, lowest contact resistance, excellent oxidation resistance, Terminal Screw Connector suitable for precision electrical equipment (such as medical instruments, aerospace electronics), and high-frequency signal transmission scenarios, with no performance degradation over long-term use;
Tin Plating
Good oxidation resistance and weldability, high cost-effectiveness, suitable for industrial control, building power distribution, etc., ensuring reliable connection between terminals and wires and avoiding poor contact caused by oxidation;
Zinc Plating
Strong corrosion resistance, suitable for outdoor and humid environments (such as outdoor distribution boxes, new energy power stations), effectively resisting salt spray and damp heat corrosion, extending screw terminal block lifespan.
Common Advantages
All plating layers use cyanide-free electroplating technology, environmentally friendly and non-toxic, with strong adhesion. After insertion/removal and vibration tests, there is no peeling or flaking, ensuring long-term stability of conductivity and protective performance.
Our Commitment: Building a Safer Electrical World Together
Connection System Solutions
Equipped with a professional technical team, we provide comprehensive support from AMP Terminal Screws selection to connection system design, optimising the reliability of your electrical connections.
Customised Development Services
Based on your specific needs, we offer personalised solutions for material selection, plating schemes, and structural design to meet the stringent requirements of special applications.
Full Lifecycle Quality Commitment
We have established a comprehensive quality traceability system to ensure consistency across batches of Electrical Screw Terminal Blocks. We provide complete technical documentation and test reports to support your quality certification and product verification.
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