Monel K500 Bolts and Nuts
Monel K500 Fasteners are high-strength, corrosion-resistant fastening solutions made from a nickel-copper alloy. These fasteners combine the excellent corrosion resistance of Monel 400 with added strength and hardness due to the presence of aluminum and titanium. Monel K500 Bolts and Nuts are widely used in industries such as marine, chemical processing, aerospace, and offshore oil drilling.
At ASC LLP, we are a trusted manufacturer and supplier of UNS N05500 Fasteners. We provide high-quality Alloy K500 Studs and other fastener types that meet international standards. Our fasteners are manufactured in compliance with the ASTM B865 K500 Monel Hex Head Bolt and ASME SB 865-04 Monel Shoulder Nuts standards, ensuring durability, strength, and superior corrosion resistance.

Properties of Monel K500 Fasteners
Monel K500 Fasteners, including Monel K500 Bolts and Nuts, possess the following key properties:
- High Strength: The addition of aluminum and titanium enhances the strength of Monel K500 compared to Monel 400.
- Excellent Corrosion Resistance: These fasteners resist corrosion in seawater, acidic, and alkaline environments.
- Non-Magnetic: Even after age-hardening, Monel K500 remains non-magnetic at room temperature.
- High Thermal Conductivity: It maintains performance at extreme temperatures, making it suitable for cryogenic applications.
- Wear and Galling Resistance: The alloy is highly resistant to wear, making it suitable for high-friction environments.
Advantages of Using Monel K500 Fasteners
- Long-Lasting Durability: These fasteners are designed to withstand harsh conditions, reducing maintenance and replacement costs.
- Superior Corrosion Resistance: Ideal for marine, chemical, and high-moisture environments.
- High Mechanical Strength: Enhanced tensile and yield strength compared to Monel 400.
- Temperature Stability: Performs efficiently in both high and low-temperature conditions.
- Non-Magnetic Properties: Suitable for sensitive applications where magnetism can interfere with performance.
Monel K500 Fasteners Manufacturing Standards
Monel K500 Fasteners comply with several international manufacturing standards, including:
- ASTM B865 – Specification for age-hardened Monel K500 fasteners
- ASME SB-865 – Standards for fastener quality and performance
- DIN 2.4375 – German industrial standards for precision fasteners
- UNS N05500 – Standardized alloy classification for Monel K500
Types of Monel K500 Fasteners
1. Monel K500 Bolts and Nuts: Monel K500 Bolts and Nuts are the most commonly used fasteners in industrial applications. They provide superior strength and corrosion resistance in marine and chemical environments.
2. UNS N05500 Fasteners: These fasteners comply with the Unified Numbering System (UNS) for metals and alloys, ensuring standardized quality and performance across industries.
3. Alloy K500 Studs: Alloy K500 Studs are threaded rods used in construction, marine, and aerospace applications. They offer exceptional durability and resistance to extreme conditions.
4. ASME SB 865-04 Monel Shoulder Nuts: Shoulder nuts made from Monel K500 comply with ASME SB 865-04 specifications, ensuring they meet industry standards for quality and performance.
5. ASTM B865 K500 Monel Hex Head Bolt: Hex head bolts manufactured under ASTM B865 standards provide high mechanical strength and corrosion resistance, making them ideal for offshore and chemical processing applications.
6. Monel 2.4375 Bolt/Nut: This designation corresponds to the alloy number 2.4375, ensuring that these fasteners meet international material standards.
7. DIN 2.4375 Nuts: DIN 2.4375 Nuts conform to German industrial standards, ensuring precision, durability, and superior quality for various engineering applications.


Schedule & Size Chart for Monel K500 Nuts and Bolts
Fastener Type | Size Range (Inches) | Thread Type | Length (Inches) |
Hex Bolts | 1/4″ to 2″ | UNC, UNF | 1/2″ to 12″ |
Stud Bolts | 1/4″ to 2″ | UNC, UNF | 1″ to 36″ |
Nuts | 1/4″ to 2″ | UNC, UNF | Standard Sizes |
Washers | 1/4″ to 2″ | Flat, Spring | Standard Sizes |
U-Bolts | 1/4″ to 2″ | UNC, UNF | Custom Length |
Shoulder Nuts | 1/4″ to 2″ | Custom Thread | Standard Sizes |
Mechanical Properties Chart for ASTM B865 Fasteners
Property | Value |
Tensile Strength | 140 – 160 ksi (965 – 1100 MPa) |
Yield Strength | 100 – 115 ksi (690 – 795 MPa) |
Elongation (%) | 20% min |
Hardness (Rockwell B) | 85-95 HRB |
Impact Strength | High |
Fatigue Strength | 48 ksi (330 MPa) |
Specifications Chart for UNS N05500 Fasteners
Standard | Specification |
ASTM | ASTM B865 |
ASME | ASME SB-865-04 |
UNS Number | UNS N05500 |
DIN Standard | DIN 2.4375 |
EN Standard | EN 2.4375 |
ISO Standard | ISO 15156-3 |
Chemical Composition Chart for ASME SB-865 Fasteners
Element | Composition (%) |
Nickel (Ni) | 63.0 min |
Copper (Cu) | 27.0 – 33.0 |
Aluminum (Al) | 2.30 – 3.15 |
Titanium (Ti) | 0.35 – 0.85 |
Iron (Fe) | 1.0 max |
Manganese (Mn) | 1.50 max |
Silicon (Si) | 0.50 max |
Carbon (C) | 0.25 max |
Sulfur (S) | 0.01 max |
Physical Properties Chart for DIN 2.4375 Fasteners
Property | Value |
Density | 8.44 g/cm³ |
Melting Point | 1350-1370°C (2460-2500°F) |
Thermal Conductivity | 17.5 W/m·K |
Electrical Resistivity | 0.98 μΩ·m |
Specific Heat Capacity | 427 J/kg·K |
Magnetic Properties | Non-magnetic in annealed condition |
Applications of Monel K500 Fasteners
Monel K500 Nuts and Bolts are widely used in the following industries:
1. Marine and Offshore Industry
- Shipbuilding
- Submarine components
- Offshore oil and gas drilling platforms
2. Chemical Processing Industry
- Heat exchangers
- Pumps and valves
- Acid and alkaline handling equipment
3. Aerospace Industry
- Aircraft engines
- Rocket components
- High-performance landing gear systems
4. Power Generation
- Turbine blades
- Nuclear power plants
- Heat-resistant fasteners for extreme environments
5. Defense and Military Applications
- Submarine and naval applications
- Military aircraft components
- High-stress fastening systems
Why Choose ASC LLP for ASTM B865 K500 Monel Hex Head Bolts?
ASC LLP is a leading manufacturer and supplier of high-quality Monel K500 Fasteners. Our products are manufactured to meet stringent industry standards, ensuring durability, reliability, and superior performance. We offer:
- Customization Options: Tailor-made fasteners to meet specific project requirements.
- Competitive Pricing: Affordable rates without compromising quality.
- Global Supply Chain: Fast delivery across multiple locations worldwide.
- Quality Assurance: Rigorous testing and quality control procedures to ensure defect-free products.
Monel K500, including Monel K500 Bolts and Nuts, Alloy K500 Studs, and ASTM B865 K500 Monel Hex Head Bolts, are highly sought after for their strength, corrosion resistance, and durability. Whether used in marine, chemical, aerospace, or defense applications, these fasteners offer outstanding performance in demanding environments. ASC LLP provides high-quality, industry-standard Monel Fasteners to meet the needs of various industries worldwide. Contact us today to learn more about our products and services!
Global Reach
Amardeep Steel Centre boasts a robust global presence and is committed to delivering unparalleled service and quality to clients around the world. Our dedication to prompt delivery and exceptional customer care sets us apart in the industry. Major corporations across the USA, Europe, Asia, and other regions place their trust in our high-quality Monel K500 Fasteners. This widespread trust underscores our reputation for reliability and excellence. By consistently meeting and exceeding the expectations of our international clientele, we continue to solidify our position as a leader in the global steel market.

Countries We Export To
UNITED STATES, EUROPE, UK, UAE, SAUDI ARABIA, OMAN, KUWAIT, JORDAN, QATAR, INDONESIA, MALAYSIA, BRAZIL, SPAIN, ITALY, FRANCE, GERMANY, BAHRAIN, SRI LANKA, AZERBAIJAN, AUSTRALIA, AUSTRIA, PHILIPPINES, TURKEY, RUSSIA, IRAN, IRAQ, CANADA, KOREA, JAPAN, YEMEN, FINLAND, ZIMBABWE, HUNGARY, PORTUGAL, VIETNAM, MOROCCO, THAILAND, SOUTH AFRICA, MEXICO, SINGAPORE, GREECE, KUWAIT, POLAND, NEW ZEALAND, SWEDEN, SWITZERLAND, BELGIUM, BHUTAN, BANGLADESH, TAIWAN, ROMANIA, CAMBODIA, KAZAKHSTAN, AFGHANISTAN.