Table of Contents
- Monel Fasteners Overview
- Monel Fasteners Specifications
- What are Monel 500 / K500 Nuts?
- Monel Fasteners Technical Properties & Composition
- Why Industries Prefer Monel 500 / K500 Nuts
- Types of Monel 500 / K500 Nuts
- Key Advantages of Monel 500 / K500 Nuts
- Key Applications of Monel 500 / K500 Nuts
- Quality Testing & Inspection
- Global Export Markets
- Frequently Asked Questions
- Contact Aurum Overseas
Monel 500 Nuts Suppliers & Exporters
Aurum Overseas is a trusted Monel 500 Nuts Supplier and Monel 500 Nuts Exporter, providing high-strength, precipitation-hardenable nickel-copper-aluminium fasteners designed for critical subsea and marine engineering applications.
Manufactured in strict compliance with ASTM B865 UNS N05500 Nuts standards, these heavy-duty Monel K500 Nuts combine the corrosion resistance of standard Monel 400 with substantially elevated yield and tensile performance gained through controlled age-hardening treatments.
As a worldwide Monel 500 Nuts Exporter, Aurum Overseas supplies fully tested and traceable bolting components across North America (USA, Canada, Mexico), Europe (Germany, UK, France, Italy, Netherlands, Norway), the Middle East (UAE, Saudi Arabia, Qatar, Kuwait, Oman), and Asia-Pacific (Singapore, Malaysia, Australia).
Monel Fasteners Specifications
| Parameter | Specification / Technical Range |
|---|---|
| Material Grade | Monel 500 / Monel K500 / Alloy K500 |
| UNS Number | UNS N05500 |
| Werkstoff Number | 2.4375 |
| Common Trade Names | Monel K-500 / Alloy K500 / N05500 / Nickel-Copper K500 |
| Manufacturing Standards | ASTM B865, ASME SB865, DIN 934, ISO 4032, ANSI B18.2.2 |
| Size Range | M3 to M100 | 3/16" to 4" | Custom Dimensions |
| Thread Configuration | ASME B1.1 2A/3A - 2B/3B Unified (UNC, UNF, 8UN) & B1.13M Metric |
| Nut Formats | Hex Head, Heavy Hex, Square, Lock, Slotted, Coupling, Flange Nuts |
| Testing Standards | ASTM E8, SAE J411, EN 14399, ASME B1.2, ISO 7090, DIN 125 |
What are Monel 500 / K500 Nuts?
UNS N05500 Nuts, commonly known as Monel K500 Nuts, are age-hardened nickel-copper alloy fasteners engineered for high-stress structural joints operating in marine, oil field, and sour-gas environments.
Produced to ASTM B865 UNS N05500 Nuts specifications, this alloy incorporates titanium and aluminum additions into its nickel-copper base matrix. When age-hardened, sub-microscopic gamma prime (γ') particles precipitate throughout the structure, yielding triple the yield strength and double the tensile strength of conventional Monel 400 while keeping non-magnetic characteristics in low temperatures.
Monel Fasteners Technical Properties & Composition
Chemical Composition of Monel K500 Nuts (%)
| Element | Content (%) |
|---|---|
| Nickel (Ni) | 63.00 min |
| Copper (Cu) | 27.00 – 33.00 |
| Iron (Fe) | 0.5 – 2.0 |
| Manganese (Mn) | 1.5 max |
| Silicon (Si) | 0.5 max |
| Carbon (C) | 0.25 max |
| Sulfur (S) | 0.010 max |
Physical & Mechanical Properties of Monel K500
| Property / Parameter | Value |
|---|---|
| Density | 8.44 g/cm³ |
| Melting Point | 1350°C (2460°F) |
| Tensile Strength | 1100 MPa / 160,000 Psi |
| Yield Strength (0.2% Offset) | 790 MPa / 115,000 Psi |
| Elongation (%) | 20% |
Equivalent Grade Standards
| Grade | Standard | Werkstoff Nr. | UNS | EN / ISO | JIS |
|---|---|---|---|---|---|
| Monel K500 | ASTM B865 | 2.4375 | N05500 | NiCu30Al | NW 5500 |
Why Industries Prefer Monel 500 / K500 Nuts
Subsea and marine oilfield operators select Monel K500 Nuts when standard Monel 400 lacks the tensile strength to withstand heavy preloads and severe hydraulic forces.
As a reliable Monel 500 Nuts Supplier, Aurum Overseas supplies age-hardened bolting that remains non-magnetic down to -100°C (-150°F), preventing magnetic field distortions in drill string instrumentation and sensitive subsea sensor assemblies.
Types of Monel 500 / K500 Nuts
Aurum Overseas supplies a comprehensive range of Monel 500 / K500 nut configurations manufactured according to standard DIN, ASME, and ISO dimensional tolerances for multiple engineering assemblies.
Monel K500 Hex Head Nuts
Monel K500 Square Nuts
Monel K500 Lock Nuts
Monel K500 Eye Nuts
Monel K500 Wing Nuts
Monel K500 T Nuts
Monel K500 Panel Nuts
Monel K500 Coupling Nuts
Monel K500 Dome Nuts
Key Advantages of Monel 500 / K500 Nuts
Precipitation Hardened Strength
Achieves a yield strength up to 790 MPa, providing load-bearing reliability for heavy flange connections.
Non-Magnetic Properties
Low magnetic permeability maintained across sub-zero conditions, preventing interference in electronic devices.
Resistance to Velocity Seawater
Withstands high-velocity marine currents, cavitation, and marine erosion.
Sour Gas Resistance
Resists hydrogen-induced cracking in oilfield production fluids per NACE MR0175 standards.
Low Creep Rate
Retains dimension and clamp force during continuous high-stress loads.
Key Applications of Monel 500 / K500 Nuts
| Industry Sector | Primary Fastener Application | Key Service Environment |
|---|---|---|
| Offshore Drilling | Drill collar bolting, subsea wellhead components | Sour gas (H₂S) streams, high-pressure oilfield brine, and marine muds |
| Marine Engineering | Submarine propeller shaft nuts, impeller fasteners | Rapidly flowing seawater, high mechanical shear stress, and marine cavitation |
| Chemical Processing | High-pressure pump shaft bolting, mixer hardware | Concentrated caustic solutions and non-oxidizing acid lines |
| Aerospace & Defense | Non-magnetic structural fasteners, sensor housings | Cold-temperature sub-zero atmospheres requiring high tensile strength |
Quality Testing & Inspection
Aurum Overseas performs stringent quality checks on all products as a dedicated Monel 500 Nuts Supplier and Monel 500 Nuts Exporter.
- Chemical Verification: PMI and XRF testing to verify nickel, copper, aluminum, and titanium ratios.
- Mechanical & Hardness Testing: Tensile, yield, proof load, and Rockwell C hardness testing to confirm age-hardening.
- Dimensional Precision: Thread checking and flatness evaluation according to ASME B1.2 and ISO tolerances.
- Traceable Documentation: Full EN 10204 3.1 Material Test Reports issued with every batch, verifying heat numbers and physical properties.
Global Export Markets
As an international Monel 500 Nuts Exporter, Aurum Overseas supplies fully certified high-strength hardware to offshore drilling and marine centers globally.
USA
Canada
Mexico
Germany
United
Kingdom
France
Italy
Netherlands
Norway
UAE
Saudi
Arabia
Qatar
Kuwait
Oman
Singapore
Malaysia
Australia
Frequently Asked Questions
Monel 400 is a solid-solution alloy, while Monel 500 (Monel K500) contains aluminum and titanium additions that undergo age-hardening, yielding double the tensile strength.
UNS N05500 Nuts are manufactured from bar and rod material conforming to ASTM B865 UNS N05500 Nuts specifications.
Yes, Monel K500 Nuts remain non-magnetic at room temperature and retain this property down to -100°C (-150°F).
Yes, when heat-treated per NACE MR0175 specifications, Monel K500 nuts resist stress corrosion cracking in environments containing H₂S.
Yes, as a global Monel 500 Nuts Exporter, Aurum Overseas delivers certified fasteners across North America, Europe, the Middle East, and Asia-Pacific.
We offer metric threads (M3 to M100) and Unified imperial series (UNC, UNF, 8UN) tailored for subsea and heavy mechanical assemblies.
Contact Aurum Overseas
Aurum Overseas supplies precision-engineered Monel 500 Nuts (Monel K500 Nuts) for subsea, marine, and high-stress industrial applications with global delivery.
Contact our sales engineering team today for technical guidance and prompt commercial quotes.