Monel 405 Fasteners
Monel 405 fasteners are known for their exceptional strength, corrosion resistance, and durability. These fasteners are made from Monel R 405, a nickel–copper alloy specifically designed for high-performance applications in marine, chemical, and industrial environments. ASC LLP is a trusted supplier and manufacturer of Monel 405 fasteners, ensuring premium quality products that meet international standards like ASTM F467 UNS N04405.
What is Monel 405?
Monel R 405, also known as Alloy R 405, is a nickel-copper alloy with a composition similar to Monel 400 but with added sulfur for enhanced machinability. This makes it ideal for manufacturing fasteners like bolts, nuts, washers, and screws. With excellent resistance to seawater, acids, and alkaline solutions, Monel Alloy Fasteners are widely used in demanding environments.

Properties of Monel 405 Fasteners
Monel R 405 Fasteners exhibit outstanding resistance to seawater, acids, and alkaline environments. Some key properties include:
- Excellent Corrosion Resistance – Ideal for marine and chemical applications.
- High Strength and Durability – Provides superior mechanical performance.
- Good Thermal and Electrical Conductivity – Suitable for electrical and heat-exchange applications.
- Enhanced Machinability – Improved ease of machining compared to Monel 400.
- Non-Magnetic in Annealed Condition – Preferred for applications requiring non-magnetic materials.
Advantages of Using Monel 405 Fasteners
- Superior Corrosion Resistance – Suitable for harsh environments.
- High Temperature Tolerance – Performs well under extreme temperatures.
- Enhanced Strength and Durability – Long service life.
- Improved Machinability – Easier to fabricate compared to Monel 400.
- Non-Magnetic in Annealed Condition – Ideal for sensitive applications.
UNS N04405 Fasteners Specifications
These fasteners adhere to several international standards, ensuring quality and reliability. Key specifications include:
- Standard: ASTM F467 UNS N04405 Fasteners
- Material Grade: Monel R 405 / Alloy R 405
- UNS Number: UNS N04405
- Certification: EN 10204 3.1 & 3.2 Compliance


Types of Monel 405 Fasteners
Monel Alloy Fasteners come in various types to suit different industrial applications. Some of the most common types include:
1. Monel R 405 Bolts
- Hex Bolts
- Heavy Hex Bolts
- Anchor Bolts
- Carriage Bolts
- Eye Bolts
2. Monel 405 Nuts
- Hex Nuts
- Heavy Hex Nuts
- Lock Nuts
- Wing Nuts
- Dome Nuts
3. Monel 405 Washers
- Flat Washers
- Spring Washers
- Lock Washers
- Fender Washers
4. Monel 405 Screws
- Machine Screws
- Socket Head Screws
- Self-Tapping Screws
- Shoulder Screws
5. Monel 405 Studs and Threaded Rods
- Double-End Studs
- Fully Threaded Studs
- Tap End Studs
- Threaded Rods
Schedule & Size Chart
Fastener Type | Size Range | Thread Type | Length Range |
Bolts | M3 – M72 | UNC, UNF, Metric | 6mm – 500mm |
Nuts | M3 – M72 | UNC, UNF, Metric | Standard Sizes |
Washers | 3mm – 100mm | Flat, Lock | Standard Sizes |
Screws | M2 – M60 | UNC, UNF, Metric | 6mm – 300mm |
Studs | M3 – M72 | UNC, UNF, Metric | Custom Lengths |
Mechanical Properties Chart
Property | Value |
Tensile Strength | 517 MPa (75 ksi) |
Yield Strength | 172 MPa (25 ksi) |
Elongation (%) | 35% |
Hardness (Brinell) | 135 HB (Max) |
Hardness (Rockwell) | B 80 (Approx.) |
Specifications Chart
Specification | Standard |
Material Grade | Monel 405 (UNS N04405) |
ASTM Specification | ASTM F467 UNS N04405 |
DIN Specification | DIN 2.4360 |
Standard Certifications | EN 10204 (3.1/3.2), ISO 9001 |
Size Availability | M3 – M72, Custom Sizes |
Thread Type | UNC, UNF, Metric, BSW, BSP |
Chemical Composition Chart
Element | Composition (%) |
Nickel (Ni) | 63.0 Min |
Copper (Cu) | 28.0 – 34.0 |
Iron (Fe) | 2.5 Max |
Manganese (Mn) | 2.0 Max |
Sulfur (S) | 0.025 – 0.060 |
Silicon (Si) | 0.5 Max |
Carbon (C) | 0.3 Max |
Physical Properties Chart
Property | Value |
Density | 8.80 g/cm³ |
Melting Point | 1300 – 1350°C (2370 – 2460°F) |
Thermal Conductivity | 22 W/(m·K) at 25°C |
Electrical Resistivity | 5.72 μΩ·m at 25°C |
Coefficient of Expansion | 13.9 x 10⁻⁶ /°C (20 – 100°C) |
Applications of Monel 405 Fasteners
Due to their superior properties, Monel 405 Fasteners are widely used in several industries, including:
1. Marine and Offshore Industry
- Shipbuilding
- Submarine components
- Offshore oil rigs
2. Chemical and Petrochemical Industry
- Heat exchangers
- Chemical tanks and reactors
- Acid processing equipment
3. Aerospace Industry
- Aircraft engine components
- Structural fasteners for aerospace equipment
4. Power Generation Plants
- Nuclear power plants
- Thermal and hydroelectric plants
5. Electrical and Electronic Applications
- Electrical connectors
- Electronic shielding components
Why Choose ASC LLP for Monel 405 Fasteners?
ASC LLP is a leading supplier and manufacturer of Monel Alloy Fasteners, offering high-quality products that meet industry standards. Here’s why we are the best choice:
- Certified Products: All fasteners comply with ASTM F467 UNS N04405 and EN 10204 standards.
- Extensive Inventory: A wide range of Monel 405 Fasteners available in various sizes and specifications.
- Custom Fabrication: Tailor-made solutions to meet specific project requirements.
- Global Shipping: Reliable and timely delivery across the world.
- Competitive Pricing: Affordable pricing without compromising on quality.
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 405 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.