Monel Fasteners Supplier
MT.BOLTS manufactures Monel fasteners using high-corrosion-resistant Monel alloys such as Monel 400 and Monel K500. These fasteners are widely used in marine engineering, chemical processing equipment, and high-temperature environments.
Our MONEL fasteners have the following specifications:
- Diameter: M3 to M64 | #4 to 2.5″
- Length: 6mm to 500mm | 0.25″ to 20″
- Thread Pitch: Metric (Coarse/Fine) | UNC/UNF
- Standards: ASME B18.2.1, ASME B18.3, ASME B18.2.2, DIN/ISO/EN (e.g., DIN 933, DIN 934)
- Material Specifications: ASTM F467, ASTM F468, ASTM B164, ASTM B865
- Types: Bolts, Screws, Nuts, Washers, Studs
We regularly supply Monel fasteners and bolts made from two material grades – Monel 400 and Monel K500. Below are their chemical compositions and physical properties for your procurement reference.
Monel Fasteners Chemical Composition
| Element | Nickel (Ni) | Copper (Cu) | Iron (Fe) | Manganese (Mn) | Carbon (C) | Aluminum (Al) | Titanium (Ti) | Silicon (Si) | Sulfur (S) |
| Monel 400 | ≥ 63% | 28 – 34% | ≤ 2.5% | ≤ 2.0% | ≤ 0.30% | — | — | ≤ 0.50% | ≤ 0.024% |
| Monel K500 | ≥ 63% | 27 – 33% | ≤ 2.0% | — | ≤ 0.25% | 2.3 – 3.15% | 0.35 – 0.85% | ≤ 0.50% | ≤ 0.010% |
Monel Fasteners Mechanical Properties
| Alloy | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) |
| Monel 400 | ≥ 480 | ≥ 170 | ≥ 35 |
| Monel K500 | ≥ 965 | ≥ 690 | ≥ 20 |
Monel Fasteners Types
MT.BOLTS offers a comprehensive range of Monel fasteners for your selection to meet various application requirements:
Monel Hex Head Screw Bolts
Monel Square Head Bolts
Monel Flange Bolts
Monel Serrated Flange Bolts
Monel Eye bolts
Monel Carriage Bolts
Monel Elevator Bolts
Monel U-Bolts
Monel Anchor Bolts
Monel Expansion Bolt
Monel Lag Bolts
Monel U-Bolts
Monel Hex Head Lag Screws
Monel Shoulder Screws
Monel Socket Cap Screws
Monel Self-Tapping Screws
Monel Hex Nuts
Monel Serrated Flange Nuts
Monel Lock Nuts
Monel Wing Nuts
Monel Coupling Nut
Monel Square Nuts
Monel Acorn Nuts
Monel Wing Nuts
Monel Fully Threaded Rods & Studs
Monel Equal Thread Length Rods & Studs
Monel Unequal Thread Length Rods & Studs
Monel Single End Threaded Studs
Monel Weld Studs
Monel Press-In Captive Studs
Monel Flat Washers
Monel Lock Washers
Monel Curved Washers
Monel Wave Washers
Monel Square Washers
Monel Belleville Washers
Why Choose MT.BOLTS
- Material Diversity
- Standardized Production
- Ample Inventory
- Competitive Pricing
- Low-MOQ Customization
Reasons to Choose Monel Fasteners
- Exceptional Corrosion Resistance—Resists seawater, acids, and harsh chemicals
- High Strength & Durability—Monel K500 provides enhanced strength through age-hardening
- Reliable Performance—Long service life with minimal maintenance requirements
- Wide Temperature Range—Performs excellently in both cryogenic and high-temperature environments
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Application of Monel Fasteners
Monel fasteners are indispensable high-performance components for extreme environments, offering unparalleled corrosion resistance in marine/saltwater applications (outlasting stainless steel 3-5x), reliable operation in oil/gas refineries (NACE MR0175 compliant for sour service), and stable performance across chemical processing (pH 0-14) and energy systems (-200°C to 540°C). The age-hardenable Monel K-500 grade provides enhanced strength (1100MPa) for aerospace and defense applications, while maintaining Monel 400’s signature resistance to acids, alkalis and seawater – making them the engineering material of choice when failure is not an option.
FAQ About Monel Fasteners and Bolts
A Monel bolt is a fastener made from Monel alloy (typically Monel 400 or K-500), offering exceptional corrosion resistance in seawater, acids, and high-temperature environments.
For corrosion resistance in marine/chemical environments: Yes (outperforms stainless steel). For cost-sensitive applications: No (Monel is 3-5x more expensive than SS 316).
High cost (nickel-based alloy)
Heavy weight (denser than steel)
Limited availability compared to stainless steel
- Monel K-500 (aged): ~1,100 MPa tensile strength
- Titanium Grade 5: ~900-1,000 MPa
Monel K-500 is slightly stronger, but titanium has a better strength-to-weight ratio.
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