SS Cup Head Square Neck Bolts DIN603
Product Overview
SS Cup Head Square Neck Bolts DIN603, also known as carriage bolts, are essential fasteners widely used in wooden structures and various industries due to their smooth round head and square neck design. These bolts are manufactured according to the DIN603 standard, which ensures consistency in dimensions and quality. The square neck prevents rotation during installation, providing a secure and durable fastening solution ideal for smooth surface finishes and decorative applications.
At Flybear Fastener, we are committed to manufacturing premium-grade stainless steel carriage bolts that meet the highest global standards. SS Cup Head Square Neck Bolts are popular choices for both wooden and metal joints where aesthetics and high performance are critical.
Product Specification Table
| Standard | DIN603 |
|---|---|
| Size Range | M5 – M20 (custom sizes available) |
| Length Range | 16mm – 200mm |
| Thread Type | Metric |
| Head Type | Dome/Cup Head |
| Drive Style | Non-driving (hammer-driven) |
| Neck Type | Square Neck |
| Finish | Plain |
Technical Parameters Table
| Property | Value |
|---|---|
| Tensile Strength | ≥ 700 N/mm² |
| Yield Strength | ≥ 450 N/mm² |
| Thread Pitch Accuracy | ±0.1mm |
| Hardness | HRC 22–32 |
| Salt Spray Resistance | Up to 1000 hours (on request) |
Material Introduction and Production Process
Our SS Cup Head Square Neck Bolts are predominantly made from premium 304 and 316 stainless steel, offering excellent corrosion resistance, mechanical strength, and durability in outdoor and marine environments.
Production Process:
- Raw Material Inspection
- Cold Forging or Hot Forging (based on size)
- Heat Treatment (optional for carbon steel)
- Thread Rolling or Cutting
- Surface Treatment (such as pickling, passivation, or zinc plating)
- Quality Inspection
- Packaging and Labeling
Our production lines are equipped with state-of-the-art machines to ensure each bolt meets tight tolerance requirements and superior surface finishes.
Typical Industries and Applications
SS Cup Head Square Neck Bolts are ideal for applications requiring smooth surfaces and tamper resistance:
- Construction & Carpentry
- Furniture Manufacturing
- Railway and Bridge Construction
- Marine Engineering
- Agricultural Equipment
- Public Infrastructure (Benches, Poles)
- Playground and Deck Fastening
These bolts are especially preferred in wooden elements where the square neck settles into pre-drilled holes, ensuring that the bolt does not rotate when fastening the nut.
Product Advantages and Competitive Edge
At Flybear Fastener, we provide a competitive edge with our DIN603 stainless steel carriage bolts through:
- Material Selection: High-grade stainless steel (SS304/SS316) ensures superior rust and corrosion resistance, making them ideal for outdoor and humid environments.
- Precision Engineering: Our bolts feature tight thread tolerances, maintaining strong engagement between nuts and bolts.
- Advanced Surface Coating: Available in polished finish, black oxide, zinc plating, or HDG for enhanced performance under corrosive conditions.
- Strong Customization Capabilities: We accept drawings or samples for custom production needs based on application.
- Ample Stock & Fast Delivery: Ready inventory ensures timely dispatch for bulk and urgent orders.
- Comprehensive After-Sales & Technical Support: We’ve built strong back-end systems to offer sustained after-sales services globally.
Company Testing and Quality Control
Every SS Cup Head Square Neck Bolt undergoes strict quality control procedures:
- Dimensional Inspection using digital calipers and GO/NO-GO thread gauges
- Salt spray testing for coating endurance
- Mechanical properties analysis (tensile, yield, hardness)
- Surface finish inspection
- Third-party inspection support available upon request
Our commitment to ISO9001 excellence ensures that every fastener that leaves our facility is of consistently dependable quality.
Selecting and Buying Guide
When choosing the correct SS Cup Head Square Neck Bolt for your application, consider the following factors:
- Material Grade: Choose SS304 for general environments, SS316 for marine or chemical conditions
- Bolt Length and Diameter: Must match the thickness of the materials being fastened
- Coating Type: Depending on exposure to elements
- Application Requirements: Torque strength, decorative need, corrosive conditions
Custom solutions are available upon request. Our team is here to guide you through the selection process, helping you balance performance needs with cost-effectiveness.
Summary & Company Promotion
Choosing the right fastener is crucial for structural integrity and long-term durability. SS Cup Head Square Neck Bolts DIN603, especially in stainless steel, provide a reliable and aesthetic solution across numerous industries.
At Flybear Fastener, we offer an extensive range of high-quality fastener products that outperform expectations in durability, performance, and reliability.
We also provide tailored industry solutions to help our clients overcome engineering challenges with efficiency and innovation. Feel free to contact us for assistance in product selection, industry-specific recommendations, or to request a quote.
We always uphold the philosophy of “Quality First, Customer Foremost,” and are dedicated to supplying our clients with top-grade fastener products and one-stop solutions for any fastening needs.
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