17-4PH SS 10.9S Hex Bolts for Steel Structures
Product Overview
17-4PH SS 10.9S hex bolts for steel structures are high-strength, corrosion-resistant fasteners specifically engineered for high-performance structural applications. These bolts are manufactured using precipitation-hardened stainless steel, delivering exceptional mechanical properties such as high tensile strength and excellent resistance to corrosion and fatigue. Adapted for steel structures used in industrial, civil, and architectural projects, these bolts ensure stability and long-term durability even in harsh environments.
At Flybear Fastener, we specialize in producing these critical components with the precision, reliability, and strength that today’s construction demands.
Product Specifications
| Specification | Details |
|---|---|
| Product Name | 17-4PH SS 10.9S Hex Bolts |
| Head Type | Hex Head |
| Thread Type | Metric Coarse |
| Bolt Grade | 10.9S |
| Material Standard | ASTM A564 Grade 630 (17-4PH) |
| Finish | Boiled oil treatment |
| Sizes Available | M6 to M36 (Length up to 300mm) |
| Certification | ASME B 18.2.6, GB1231 |
Technical Parameters
| Property | Value |
|---|---|
| Tensile Strength | ≥ 1000 MPa |
| Yield Strength | ≥ 900 MPa |
| Elongation | ≥ 12% |
| Hardness | HRC 28-35 |
| Operating Temperature | -29°C to 450°C |
| Corrosion Resistance | Excellent (salt spray test >1000hrs) |
Material Introduction and Production Process
17-4PH (UNS S17400) stainless steel is a martensitic precipitation-hardening stainless steel known for its superior mechanical properties and corrosion resistance. It combines high strength with good toughness across a wide temperature range. The production process for our hex bolts includes:
- Raw material procurement of premium-grade 17-4PH stainless steel.
- Precision cold forming or hot forging.
- Thread machining with CNC lathes for tight tolerances.
- Heat treatment and aging to achieve 10.9S strength grade.
- Surface treatment including passivation or protective coating.
- Final quality inspection and packaging.
Our advanced manufacturing process ensures each bolt meets international quality standards with consistent dimensional accuracy and performance.
Common Industrial Applications
17-4PH SS 10.9S hex bolts for steel structures are widely used in:
- Steel framework for commercial and industrial buildings
- Offshore and coastal structural installations
- Bridges and transportation infrastructure
- Mining and heavy machinery structures
- Renewable energy structures like wind turbines
- Railways, tunnels, and engineering structural supports
Product Advantages and Competitive Edge
Material Excellence
Manufactured from premium 17-4PH stainless steel, these bolts offer a rare combination of tensile strength and corrosion resistance, especially beneficial for outdoor, marine, or chemically exposed environments.
Precision Engineering
Dimensional accuracy and tight thread tolerances ensure superior fitting and load performance. Our skilled technicians employ CNC machining and quality forging practices to achieve consistent bolt integrity.
Advanced Surface Treatments
Each bolt undergoes surface passivation or corrosion-resistant treatment, delivering longevity even in aggressive conditions. This makes them ideal for high-demand structural applications.
Customization Capability
We offer full customization services to produce bolts based on your drawings or samples. From non-standard dimensions to specific coating needs, our team can deliver tailor-made solutions in bulk quantities.
Inventory and Delivery
With a large on-site warehouse and optimized supply chain logistics, Flybear Fastener ensures timely deliveries around the globe, helping partners avoid project delays caused by stock shortages.
Strong Technical & After-Sales Support
We back our products with responsive customer service and technical support. From installation tips to choosing the correct fasteners, our support teams are always ready to assist.
Testing & Quality Control
Every batch of bolts is subject to a rigorous quality control process, including:
- Raw material validation (spectroscopy and hardness testing)
- Dimensional inspection using precision gauges
- Tensile and torque strength verification
- Salt spray testing for corrosion resistance
- Thread conformity testing using GO/NO-GO gauges
Certifications like ISO 9001:2015 ensure our processes align with top-tier industry standards. Our lab reports confirm compliance with EN and ASTM norms.
Bolt Selection and Procurement Guidelines
When choosing the right 17-4PH SS 10.9S hex bolts, consider:
- Application environment (corrosiveness, temperature, load-bearing needs)
- Dimensional compatibility (thread pitch, bolt size)
- Applicable standards (ISO, ASTM)
- Required certifications
- Volume and lead time for delivery
For specific industries like offshore wind power or chemical plants, these bolts offer unmatched performance benefits. We recommend consulting our engineering team for application-specific selection support. Visit our catalog to explore a broader range of fastener products.
Conclusion & Company Promotion
At Flybear Fastener, we are committed to providing the highest quality fastener products with full customization and technical support at every stage of your project. From advanced material sourcing to exacting production standards, we deliver reliability where it counts.
“We always adhere to the principle of ‘quality first, customer supreme,’ dedicated to offering clients premium-grade fasteners and one-stop fastening solutions.” For industry-specific recommendations or competitive quotes, please don’t hesitate to contact us.
We welcome your inquiries and look forward to being your trusted fastening partner for structural engineering needs.
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