Stainless Steel Hex Socket Countersunk Head Cap Screws
Hex Socket Countersunk Head Cap Screws are one of the most essential fasteners in precision engineering and assembly. Their flush surface design and internal hex drive make them ideal for applications requiring a sleek finish without compromising strength or torque capabilities. Manufactured to exact standards using high-grade stainless steel, these screws are built for durability and corrosion resistance.
At Flybear Fastener, we specialize in manufacturing reliable and high-precision fastening solutions. Our Hex Socket Countersunk Head Cap Screws comply with international standards for high-performance applications across various industries.
Product Overview
Hex Socket Countersunk Head Cap Screws are designed with a flat head that sits flush within the assembled surface. The internal hex socket drive allows smooth torque application without slippage, making them highly suitable for application where aesthetics and safety are both required.
These screws are primarily used in areas where a clean, smooth surface is needed such as machinery maintenance, structural hardware, automotive assembly, and electronic devices.
Product Specifications
| Specification | Details |
|---|---|
| Head Type | Countersunk Flat Head |
| Drive Type | Hex Socket |
| Thread Type | Metric/Unified |
| Thread Direction | Right Hand |
| Sizes Available | M2 – M24 |
| Material | Stainless Steel 304 / 316 |
| Surface Finish | Plain / Passivated |
| Standards Complied | DIN 7991, ISO 10642 |
Technical Parameters Table
| Parameter | Value |
|---|---|
| Tensile Strength | Up to 700 MPa (A2-70), 800 MPa (A4-80) |
| Hardness | 250 HV – 320 HV |
| Temperature Resistance | Up to 870°C (Stainless Steel 316) |
| Torque Requirements | As per ISO 898-1 |
| Dimensional Tolerances | ±0.05 mm |
| Surface Roughness | Ra ≤ 1.6 µm |
Materials and Production Process
All Hex Socket Countersunk Head Cap Screws produced by Flybear Fastener are crafted from premium-grade stainless steel, including A2 (304) and A4 (316). These materials offer superior mechanical properties and outstanding corrosion resistance, making them suitable for both indoor and outdoor environments.
The manufacturing process includes:
- Raw material inspection
- Cold or hot forging
- CNC machining and threading
- Heat treatment (optional for high tensile grades)
- Surface passivation or other finishing
- Final quality inspection and packaging
Common Applications and Industries
- Automotive and motorcycle assembly
- Precision equipment and machine tools
- Marine and offshore constructions
- Aerospace structures
- Consumer electronics
- Furniture production
- Renewable energy systems
These screws are widely used where both structural reliability and surface flushness are critical. Their low-profile heads reduce surface protrusion, minimizing injuries and enhancing appearance.
Product Advantages & Competitive Edge
- Superior Material Selection: Made from high-quality 304 and 316 stainless steel for excellent corrosion resistance.
- Precision Manufacturing: Tight tolerance control ensures consistent thread quality and alignment.
- Advanced Surface Treatment: Options like passivation provide extended anti-rust attributes.
- Custom Capability: Can be manufactured based on your specific drawings or physical samples.
- Strong Inventory System: Ample stock levels ensure fast dispatch and global delivery.
- Reliable After-Sales Support: Instant technical consulting and professional service team.
Company Testing and Quality Control
Flybear Fastener applies a strict quality control protocol throughout the production process. Each batch undergoes:
- Dimensional inspection
- Mechanical property testing
- Salt spray corrosion test
- Torsion and tensile examination
- Thread gauge compatibility check
Advanced testing instruments and professional QC engineers ensure all products delivered exceed industry specifications.
Hex Socket Countersunk Screw Selection Guide
When selecting Hex Socket Countersunk Head Cap Screws, consider the following:
- Diameter and length based on structural requirements
- Material grade (use 316 for marine or chemical environments)
- Standard compliance (DIN 7991 or ISO 10642)
- Surface finish for environmental resistance
- Torque and load demands
Design engineers should also factor in the head angle (typically 90°) and whether a passivated finish is required for aesthetic or corrosion resistance needs.
Summary and Company Promotion
At Flybear Fastener, we are committed to producing only high-performance fastener products that meet the evolving needs of global industries. We understand the importance of dimensional stability, corrosion resistance, and product consistency.
Our design team is ready to support custom requests, and our extensive inventory allows for quick sourcing and dispatch. Whether you’re in the aerospace, automotive, construction, or electronics industry, our dedicated experts are here to guide you through available solutions.
We always uphold the principle of “Quality First, Customer Foremost” to deliver trust and reliability. Feel free to contact us for custom quotations, technical support, or to explore more fastening solutions.
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