Alloy 660 (A286) Hex Nut - High Temperature & Corrosion Resistant Fastener
Our Alloy 660 (A286) hex nuts are engineered for demanding applications requiring high tensile strength and resistance to elevated temperatures and corrosive media. Available in M2 to M64, these nuts meet ISO, DIN, ASTM, ASME, ANSI, and JIS standards. With A2-70, A4-80, D6-80, D6-100 strength grades, they deliver reliable performance in aerospace, petrochemical, and marine environments.
Key Features
- Excellent high-temperature resistance: Alloy 660 (A286) maintains mechanical properties at temperatures up to 700°C, ideal for aerospace turbine and petrochemical applications.
- Corrosion and acid resistance: Withstands seawater and acidic environments, suitable for marine and chemical processing.
- Precision tread tolerance: 6H/2B/3B thread classes ensure consistent assembly and high fatigue strength.
- International standard compliance: Meets ISO, DIN, ASTM, ASME, ANSI, JIS requirements for global projects.
- Multiple surface treatments: Natural finish, passivation, Dacromet, and adhesive pre-coating reduce maintenance needs.
Technical Specifications
| Dimensions | M2 – M64 |
| Strength Grades | A2-70, A2-80, A4-70, A4-80, D6-80, D6-100 |
| Thread Tolerance | 6H / 2B / 3B |
| Raw Materials | Alloy 660 (A286), also available 304/316, duplex, nickel alloys |
| Surface Treatments | Natural, passivation, Dacromet, adhesive pre-coating |
| Standards | ISO, DIN, ASTM, ASME, ANSI, JIS |
Models and Options
Available types: hex nut, coupling nut, weld nut, flange nut, nylon nut, heavy nut, jam nut, castle nut, slot nut, self-locking nut.
Custom sizes and dimensions within M2-M64 range; full size customization supported.
Materials and Structure
Alloy 660 (A286) is a nickel-based high-temperature alloy known for its excellent strength and corrosion resistance. It is supplied as raw material in bar form, subsequently machined into precise hex nut dimensions. Other materials such as 304/316 stainless steel, duplex steel, and nickel-based alloys are available for different application needs.
Applications
These hex nuts serve in high-temperature and corrosive environments across petrochemical, power generation, aerospace, automotive, marine & offshore, construction, industrial machinery, and more. Their high tensile and anti-fatigue properties make them suitable for critical fastening applications.
Customization
We offer OEM/ODM services with custom sizes, materials, and surface treatments. Strict pre-delivery inspection and flexible OEM service ensure consistent quality and performance.
Case Study
Our fasteners have been used for over 10 years in fastening assemblies for aerospace parts, marine equipment, automotive chassis, and power generation facilities. Clients report greatly reduced maintenance and replacement costs, ensuring stable project operation.
FAQ
What is the typical lead time for custom Alloy 660 hex nuts?
Lead times depend on order quantity and specifications. Please contact our sales team for accurate delivery schedules.
Do you provide free samples for evaluation?
We can arrange samples based on your requirements. Please send an inquiry to discuss sample policy and costs.
What certifications do your products hold?
Our products comply with ISO, DIN, ASTM, ASME, ANSI, and JIS standards. The company holds ISO 9001, ISO 14001, ISO 45001, and PED certification.
Can you provide Dacromet coating for enhanced corrosion resistance?
Yes, we offer Dacromet coating as one of the surface treatment options, suitable for high-corrosion environments.
What is your MOQ for hex nuts?
MoQ varies by size and material. Please contact us for specific MOQ information.
What thread tolerance classes are available?
We offer 6H, 2B, and 3B thread tolerance classes to meet precision fastening needs.
Do you support special packaging?
Yes, we can customize packaging to your specifications for export or domestic shipment.
Inquiry Information
Contact: Michael Shen
Email: michaelshen@uhc-group.com.cn / sales@uhc-group.com.cn
Tel/WhatsApp: +86 13575349247
Website: www.jxuhc.com
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