Screw Type Terminal Blocks
Products Description
The Screw Type Terminal Blocks are not simply an assembly of metal parts, but a functional component systematically designed around force distribution, conductivity, insulation, and assembly efficiency.
Core Components:
Clamping Screw: Provides stable and controllable axial clamping force
Wire Contact Cavity (Terminal Block): Achieves conductor positioning and force distribution
Insulating Base: Isolates conductive components, ensuring device safety
Delivered pre-assembled, customers do not need to assemble parts during the assembly process, effectively reducing assembly errors and improving production cycle consistency.
Core Material Advantages
Safety and Compliance
All materials are RoHS and REACH certified, and their flame retardancy, insulation, and heavy metal content meet global electrical safety standards.
High Durability
Screws have uniform plating thickness and pass salt spray tests (galvanized ≥48 hours, stainless steel ≥1000 hours), ensuring no rust even after long-term use.
Cost Optimization
Through tiered material selection, high-performance solutions are provided while meeting performance requirements in different scenarios, adapting to both small-batch customization and large-volume bulk procurement needs.
Environmental Adaptability
From extremely cold to high temperatures, from dry to humid environments, from ordinary atmospheres to corrosive environments, corresponding material combinations are available, avoiding over- or under-performance due to a "one-size-fits-all" approach.
Optimized Frame Structure Design
Guiding and Over-Insertion Prevention Structure
The wire insertion port of the Crimping Frame is designed with a smooth chamfer or flared opening for easy wire insertion; internal stops may be included to prevent wires from being inserted too deeply, affecting screw tightening or contact area.
Stress Dispersion and Reinforcement Structure
The frame geometry is optimized through finite element analysis, increasing local strength in the screw clamping area to avoid deformation or cracking caused by stress concentration, while guiding the clamping force evenly onto the wires.
Integrated Installation Features
Depending on application requirements, the frame can be integrated with clips, rivet holes, welding feet, etc., for quick and secure installation on PCB boards, plastic housings, or Screw Fastener Terminals.
Core Manufacturing Processes: Dual Guarantee of Precision and Consistency
1. Precision Stamping and Cold Forging:
The Terminal Screw Combination is formed using multi-station precision progressive die stamping, with dimensional tolerances controlled within micrometers. Screws are formed in one piece using a high-speed cold forging machine, ensuring complete metal flow lines in the head and shaft, resulting in superior mechanical properties.
2. Automated Pre-assembly and Online Inspection:
In highly automated assembly units, screws are automatically picked up, glued (if needed), and screwed into the Clamp Screw for Circuit Breaker to the preset position or torque. The entire process is monitored by machine vision and sensors to ensure 100% accuracy in screw type, installation depth, and preload.
100% Electrical Continuity Test: After pre-assembly, each Clamp Screw for Contactor undergoes a rapid electrical continuity test using probes to ensure there is no insulation failure between the screw and the frame due to thread defects or foreign objects.
3. Fully Automated Electroplating and Post-processing:
Components enter the fully automated electroplating line via a suspended chain, ensuring uniform plating thickness and strong adhesion. Post-treatment may include passivation, sealing, or coating with specialty lubricants to further enhance corrosion resistance and stabilize the coefficient of friction.
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