316 Stainless Steel Screws
Products Description
316 stainless steel screws belong to the austenitic stainless steel fastener category. Due to the presence of molybdenum (Mo), they exhibit significantly superior resistance to chloride corrosion, pitting corrosion, and acid/alkali corrosion compared to the 304 series, making them a preferred material for marine environments and chemical systems.
Core Product Features
Excellent Corrosion Resistance: Excellent resistance to salt spray, humid and hot environments, and chloride ion corrosion.
High Strength and Stability: Maintains reliable tightening force under continuous vibration and temperature fluctuations.
Good Ductility and Toughness: Combines tensile strength and ductility, adaptable to various installation methods and preload requirements.
Non-Magnetic Properties: Meets the needs of applications sensitive to magnetic interference.
Aesthetically Pleasing Surface: High-gloss surface finish after treatment, easy to clean, and with good stain resistance.
These characteristics make stainless steel screws woods the designated material for many high-standard engineering projects.
Surface Treatment Optimization
Passivation Treatment
A chromate passivation process is used to form a uniform passivation film, extending salt spray test life by 50% while improving electrical insulation.
Anti-corrosion Coating
Optional PTFE (polytetrafluoroethylene) coating or Dacromet coating further enhances corrosion resistance, making countersunk flat head screws suitable for strong acid and alkali environments.
Lubrication Treatment
For scenarios with high assembly resistance, titanium nitride coating or pre-coating with grease is provided to reduce tightening torque and prevent thread seizing.
The Language of Design – Every Detail an Extension of Function
We offer more than just standard stainless steel sheet metal screws; we provide the engineering language of connection solutions. We understand that different head shapes, drive methods, and thread designs all correspond to specific engineering needs.
Engineering Considerations for Head and Drive Design: External Hexagon vs. Internal Hexagon: External hexagons offer greater torque capacity, suitable for heavy-duty fastening; internal hexagons are more aesthetically pleasing, allowing for countersunk installation, suitable for space-constrained applications or situations where appearance is important.
Advantages of Flange Faces: Flange designs distribute pressure across a larger contact surface, effectively protecting the connected surfaces of soft materials (such as plastics and aluminum alloys) and providing better anti-loosening performance.
Intelligent Anti-Loosening Design: We offer various anti-loosening solutions, including nylon locking and metal locking (such as Spiral threads), to ensure durable and stable connections under vibration and impact conditions, eliminating safety hazards caused by loosening.
Precise Thread Matching: Coarse vs. Fine: Coarse threads offer faster installation, higher standardization, and greater versatility; fine threads have a smaller lead, allowing for fine-tuning, better self-locking, and are more suitable for precision adjustments and vibration-resistant applications.
Customized Threads: Our technical team can develop non-standard thread profiles, pitches, and fit grades to meet your specific needs and achieve optimal connection performance.
Full-Scenario Application Advantages: Covering Core Industrial Fields
Marine Engineering
Used for ship deck fixing, offshore platform equipment connection, and seawater desalination equipment assembly. It withstands long-term seawater immersion and salt spray corrosion, with a service life more than 5 times longer than 304 stainless steel screws.
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Chemical Machinery
Used for chemical pipeline flange connections, reactor fastening, and acid/alkali storage tank fixing. It resists corrosion from strong acids, strong alkalis, and organic solvents, preventing media leakage due to stainless steel set screws failure.
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New Energy Equipment
Used for photovoltaic power station bracket fixing, internal connections in energy storage equipment, and fastening of new energy vehicle chassis components. stainless steel cladding screws is suitable for outdoor high and low temperature and humid environments, meeting the requirements for long-term stable operation.
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Medical Equipment
Used for fastening the outer shells of medical disinfection equipment, pharmaceutical machinery, and medical devices. The materials meet biocompatibility requirements, can withstand high-temperature and high-pressure disinfection, and do not leach heavy metals.
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Industrial Equipment
Used for connecting CNC machine tools, robot joints, and automated production line components. Stainless steel trim screws combine high strength and corrosion resistance, reducing equipment maintenance frequency and downtime losses.
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