Screw Carbon Steel Self Clinching Stud
Products Description
The structure of a Screw Carbon Steel Self Clinching Stud typically consists of the following components:
Knurled/Serrated Ring (for clinching)
Threaded Body
Shoulder Section
Lead-in Chamfer
Its operating principle is based on a "cold-extrusion plastic deformation locking mechanism":
Under the force of specialized press-fit equipment, the stud is pressed into a pre-drilled hole. High local pressure causes the material to undergo plastic flow and embed itself into the stud's knurled/serrated ring, thereby creating a mechanical interlock. This connection method requires no welding or adhesives, serving as a purely mechanical, permanent fastening solution.
The core advantages of this design include:
No heat-affected zone (preventing material property degradation)
No welding-induced deformation
High repeatability and consistency
Suitability for automated assembly
Key Functions and Application Scenarios: A Core Link in Modern Manufacturing Systems
Telecommunications Base Stations and Network Cabinets
Zinc Plated Carbon Steel Self Clinching Screw Providing space-efficient, stable structural support within densely wired and compact server chassis and router housings.
New Energy Vehicles and Smart Hardware
Passivated Clinching Stud Screw Used for the lightweight fastening of On-Board Chargers (OBC), Battery Management Systems (BMS) housings, and smart cockpit sheet metal components, capable of withstanding extreme vibrations during vehicle operation.
Photovoltaic Inverters and Energy Storage Cabinets
Ensuring secure, low-impedance structural locking between internal electrical components and metal frames, even in harsh outdoor environments characterized by complex weather conditions and wind loads.
Precision Instruments and Medical Equipment
Meeting the rigorous hygiene and assembly standards for medical device housings-specifically the requirements for a lack of welding spatter, high surface flatness, and the absence of secondary contamination.
Manufacturing Process: A Journey from Raw Material to Industrial Precision Product
| Raw Material Selection and Spheroidizing Annealing | High-quality low-carbon or medium-carbon steel wire rods (such as SWRCH35K, 1022A, etc.) are selected. Before cold heading, the material undergoes spheroidizing annealing to refine its microstructure and optimize plasticity and deformation resistance, preparing it for complex cold-heading operations. |
| Cold Heading and Thread Rolling | High-speed cold-heading machines perform multiple processes-including cutting, initial heading, finish heading, and chamfering-to shape the Stainless Steel Rivet Self-Clinching Screw's head, shank, and anti-rotation serrations at the base. Subsequently, precision thread-rolling dies are used to form high-accuracy metric or imperial threads. |
| Heat Treatment and Surface Protection | Carburizing and quenching heat treatments are applied to achieve a surface hardness exceeding HV600 while maintaining a core hardness of HV200–300, resulting in a combination of high strength and toughness. Finally, depending on the application environment, surface treatments such as zinc plating (white, colored, or blue), nickel plating, or Dacromet coating are applied to ensure corrosion resistance in harsh conditions, such as high humidity or salt spray environments. |
Feature Highlights
Knurled Pattern
Precision-machined knurling with well-defined, evenly distributed teeth ensures secure engagement with the panel material.
01
Thread Quality
Roll-formed threads with full profiles; passes Go/No-Go gauge inspections; smooth engagement with no stripping.
02
Head Profile
Various options available (flat, round, or large round heads); smooth finish free of burrs.
03
Heat Treatment Uniformity
Quenching and tempering processes ensure consistent properties between the core and surface, eliminating hardness gradient defects.
04
Plating Quality
Uniform zinc coating with strong adhesion; meets salt spray test standards.
05
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As a key fastening solution for sheet metal structures, Self Clinching Rivet Bolts Screws not only enhance structural strength and assembly efficiency but also optimize the overall manufacturing process, resulting in greater flexibility and reliability in sheet metal design.
For engineering procurement teams and equipment manufacturers, selecting a supply chain capable of maintaining stable self-clinching process control and ensuring batch-to-batch consistency directly impacts both product structural reliability and production efficiency.
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