Inconel Fasteners Supplier
MT.BOLTS manufactures Inconel fasteners using high-performance nickel-chromium-based alloys such as Inconel 600, Inconel 625, and Inconel 718. These fasteners are specifically designed for extreme conditions involving high temperatures, pressure, and corrosive media. They are widely used in aerospace, power generation, marine, chemical processing, and heat treatment applications.
Our INCONEL 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 B166 (Inconel 600/625), ASTM B637 (Inconel 718), ASTM F2281
- Types: Bolts, Screws, Nuts, Washers, Studs
We regularly supply Hastelloy fasteners and bolts in these material grades: Hastelloy C276, C22, C2000, X, B2, and B3. Their chemical compositions and physical properties are below for your procurement reference.
| Alloy Grade | UNS Number | Key Characteristics |
| Inconel 600 | N06600 | Good oxidation and corrosion resistance at moderate temperatures; high nickel content; resists chloride stress corrosion |
| Inconel 601 | N06601 | Excellent high-temperature oxidation resistance; forms a protective oxide layer; stable mechanical properties |
| Inconel 625 | N06625 | High strength, outstanding corrosion resistance especially in seawater and acidic media; excellent weldability |
| Inconel 718 | N07718 | Precipitation-hardened alloy with high strength; excellent creep and fatigue resistance |
| Inconel X-750 | N07750 | Precipitation-hardened; excellent stress corrosion and oxidation resistance; suitable for high-temperature springs |
Inconel Fasteners Chemical Composition
| Alloy | Ni | Cr | Fe | Mo | Nb + Ta | Co | Al | Ti | C | Others |
| Inconel 600 | ≥72.0 | 14.0–17.0 | 6.0–10.0 | — | — | ≤1.0 | ≤0.35 | ≤0.50 | ≤0.15 | Si ≤0.50, Mn ≤1.0, S ≤0.015 |
| Inconel 601 | ≥58.0 | 21.0–25.0 | ≤14.0 | — | — | ≤1.0 | 1.0–1.7 | ≤0.6 | ≤0.10 | Si ≤0.50, Mn ≤1.0, Cu ≤1.0 |
| Inconel 625 | ≥58.0 | 20.0–23.0 | ≤5.0 | 8.0–10.0 | 3.15–4.15 | ≤1.0 | ≤0.40 | ≤0.40 | ≤0.10 | Mn ≤0.5, Si ≤0.5, P ≤0.015 |
| Inconel 718 | ≥50.0 | 17.0–21.0 | Balance | 2.8–3.3 | 4.75–5.5 | ≤1.0 | 0.2–0.8 | 0.65–1.15 | ≤0.08 | Mn ≤0.35, Si ≤0.35, Cu ≤0.3 |
| Inconel X-750 | ≥70.0 | 14.0–17.0 | 5.0–9.0 | ≤1.0 | 0.7–1.2 | ≤1.0 | 0.4–1.0 | 2.25–2.75 | ≤0.08 | Mn ≤1.0, Si ≤0.5 |
Inconel Fasteners Mechanical Properties
| Alloy | Tensile Strength (MPa) | Yield Strength 0.2% (MPa) | Elongation (%) | Hardness (HRB / HRC) |
| Inconel 600 | ≥550 | ≥240 | ≥30 | ≤100 HRB |
| Inconel 601 | ≥600 | ≥250 | ≥30 | ≤95 HRB |
| Inconel 625 | ≥827 | ≥414 | ≥30 | ≤100 HRB |
| Inconel 718 | ≥1240 | ≥1035 | ≥12–20 | ≤44 HRC (age-hardened) |
| Inconel X-750 | ≥965 | ≥690 | ≥18 | ≤35 HRC (age-hardened) |
Inconel Fastener Types
MT.BOLTS offers a comprehensive range of Inconel Fasteners for your selection to meet various application requirements:
Inconel Hex Head Screw Bolts
Inconel Square Head Bolts
Inconel Flange Bolts
Inconel Serrated Flange Bolts
Inconel Eye bolts
Inconel Carriage Bolts
Inconel Elevator Bolts
Inconel U-Bolts
Inconel Anchor Bolts
Inconel Expansion Bolt
Inconel Lag Bolts
Inconel U-Bolts
Inconel Hex Head Lag Screws
Inconel Shoulder Screws
Inconel Socket Cap Screws
Inconel Self-Tapping Screws
Inconel Hex Nuts
Inconel Serrated Flange Nuts
Inconel Lock Nuts
Inconel Wing Nuts
Inconel Coupling Nut
Inconel Square Nuts
Inconel Acorn Nuts
Inconel Wing Nuts
Inconel Fully Threaded Rods & Studs
Inconel Equal Thread Length Rods & Studs
Inconel Unequal Thread Length Rods & Studs
Inconel Single End Threaded Studs
Inconel Weld Studs
Inconel Press-In Captive Studs
Inconel Flat Washers
Inconel Lock Washers
Inconel Curved Washers
Inconel Wave Washers
Inconel Square Washers
Inconel Belleville Washers
Why Choose MT.BOLTS
- Material Diversity
- Standardized Production
- Ample Inventory
- Competitive Pricing
- Low-MOQ Customization
Reasons to Choose Inconel Fasteners
Inconel fasteners are ideal for extreme environments due to their exceptional resistance to high temperatures, oxidation, and corrosion. These nickel-chromium-based alloys maintain mechanical strength across a wide temperature range, making them reliable under both cryogenic and elevated conditions. Inconel fasteners are also highly resistant to chloride-induced stress corrosion cracking, pitting, and crevice corrosion, making them suitable for harsh chemical and marine environments. With grades like Inconel 600, 625, 718, and X-750, they offer excellent fatigue strength, weldability, and long-term durability in critical applications.
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Application of Inconel Fasteners
Inconel fasteners are widely used in aerospace, power generation, marine engineering, chemical processing, and nuclear industries. Typical applications include gas turbines, jet engines, heat exchangers, pressure vessels, exhaust systems, and high-temperature furnace components. Their ability to withstand extreme heat, pressure, and corrosive environments makes them essential for fastening components in mission-critical systems where failure is not an option.
FAQ About Inconel Fasteners and Bolts
Inconel fasteners are made from nickel-based superalloys such as Inconel 600, 625, 718, or X-750, which combine nickel with chromium, molybdenum, niobium, and other elements to enhance performance in extreme conditions.
Inconel fasteners can typically withstand temperatures from cryogenic levels up to around 980°C (1800°F), depending on the grade.
Yes, they offer excellent resistance to oxidation, acidic and alkaline environments, and chloride-induced corrosion (pitting and stress corrosion cracking).
Aerospace, marine, chemical processing, petrochemical, nuclear, and high-temperature furnace industries are among the most frequent users.
Common standards include ASTM B166 (Inconel 600/625), ASTM B637 (Inconel 718), ASTM F2281, and dimensional standards like ASME B18.2.1 and DIN/ISO equivalents.
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