Stainless Steel Square Head Screw Plug
Product Overview
Square Head Screw Plug is a robust and versatile fastening component widely used for sealing and plugging threaded holes in a range of equipment and piping systems. These screw plugs, featuring a square-shaped head for easy wrenching, are typically employed in hydraulic, pneumatic, mechanical, and plumbing applications. Manufactured from corrosion-resistant stainless steel, they are an ideal choice for environments demanding high durability and performance, especially in highly corrosive or high-pressure scenarios.
At Flybear Fastener, we produce square head screw plugs that conform to international quality standards, ensuring optimal sealing performance and longevity under tough industrial conditions. Our products are precision-machined and available in a variety of sizes to meet the diverse needs of clients across different sectors.
Product Specifications
| Parameter | Specification |
|---|---|
| Product Name | Square Head Screw Plug |
| Head Type | Square Head |
| Thread Type | BSP / NPT / Metric |
| Sizes Available | 1/8″ to 2″ |
| Material | Stainless Steel (SS304, SS316) |
| Coating | Plain / Passivated |
| Operating Temperature | -20°C to +400°C |
| Pressure Rating | Up to 10,000 PSI |
Technical Data Sheet
| Property | Value |
|---|---|
| Thread Class | Class 2B / Class 6g |
| Yield Strength | ≥ 205 MPa |
| Tensile Strength | ≥ 515 MPa |
| Elongation | ≥ 30% |
| Hardness (HB) | ≤ 95 HB (Annealed condition) |
| Corrosion Resistance Class | Excellent |
| Manufacturing Tolerance | ±0.05mm |
Material & Manufacturing Process
Square Head Screw Plug products at Flybear Fastener are made from high-grade stainless steel, usually SS304 or SS316. These austenitic alloys are chosen for their outstanding corrosion resistance, high strength, and temperature stability in engineering applications.
Manufacturing goes through a highly controlled process that includes:
- Raw material inspection
- CNC turning/machining of threads and square heads
- Heat treatment (if required)
- Surface treatment such as passivation or electropolishing
- Final dimensional and functional inspections
Each stage is carried out under strict quality control guidelines to ensure consistent product precision and finish.
Application Industries and Use Cases
The Square Head Screw Plug is commonly used in a variety of settings such as:
- Hydraulic tubing and valve systems
- Pneumatic compressors and control units
- Petrochemical processing plants
- Marine and offshore projects
- Automotive repair and maintenance
- Aerospace engineering components
- Water and gas pipelines
These plugs are especially favored in systems where frequent assembly/disassembly happens and where corrosion resistance is paramount.
Product Advantages and Competitiveness
Superior Material:
We use premium-grade stainless steel, including SS316 for high-chloride environments.
High-Precision Threading:
Threads are cut using CNC machines maintaining exact tolerances to ensure easy installation and tight sealing.
Advanced Surface Treatments:
All plugs undergo optional passivation/electropolishing processes, significantly enhancing corrosion resistance and cleanliness.
Customization Support:
Tailored dimensions and threads available on request; we can manufacture according to custom drawings or specifications.
Reliable Supply Chain:
We maintain large inventory volumes for rapid dispatch and bulk order fulfillment.
End-to-End Technical Support:
Our team provides dedicated technical support, CAD drawings, and after-sales service to ensure optimal satisfaction.
Quality Assurance and Inspection
Flybear Fastener implements rigorous quality inspections throughout the production process to guarantee high-performance, reliable fastener components. Our in-house QC team verifies:
- Thread gauges
- Dimensional conformity
- Torque resistance tests
- Material composition analysis
- Anti-corrosion performance
- Certificates of compliance per order
All fastener products are tested against industry protocols to ensure zero-defect delivery.
Selection and Procurement Guide
When selecting a Square Head Screw Plug, consider the following:
- Thread type compatibility (BSP or NPT)
- Material requirement based on application environment
- Pressure and temperature ratings
- Required certifications (ROHS, REACH, etc.)
- Delivery timelines and inventory availability
Our catalog includes detailed specifications to assist engineers in choosing the right plug. For large projects, we offer bulk supply options and quick logistic support globally. Use our website to place queries or contact us for technical consultation, pricing, or lead time information.
Conclusion
The Square Head Screw Plug by Flybear Fastener is a trusted component in industries requiring durable and leak-proof sealing solutions. Backed by stainless steel strength and precise engineering, these screw plugs offer unmatched performance in the most demanding environments.
We invite you to explore our complete line of fastener products and reach out for specific solutions tailored to your industry. We firmly believe in “quality first, customer foremost”—a guiding principle that drives our commitment to excellence.
Whether you are sourcing for a standard application or a custom-engineered design, don’t hesitate to contact us for industry expertise and competitive pricing.
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