Monel Stud Bolts

Monel Stud Bolts Manufacturer, Supplier & Stockiest

Unifit Fastener is a prime manufacturer and provider of high-quality Monel Stud Bolts, Monel 400 Stud Bolts and Monel K500 Stud Bolts that are aimed at providing high performance in the harsh industrial conditions. Constructed of Monel alloy, which is a nickel-copper alloy, these stud bolts have a high level of corrosive resistance, strength, and durability, which is why they are used in the marine, chemical, and high-temperature industries.

Our Monel 400 stud bolts are very popular in the piping systems, pumps and seawater devices because they have fantastic resistance to the oxidising and reducing agents. Monel K500 stud bolts have high strength and are resistant to corrosion, which makes them appropriate to use in very critical applications in offshore platforms, aerospace and heavy machinery.

They come in different grades, sizes, and thread designs and can be optimised to fit the specifications of a project. Fabricated through current hot forging and CNC machining, every bolt has a dimensionally accurate and mechanically sound design. Hardness, tensile strength and corrosion tests of the product and strict quality testing assure adherence to ASTM, ASME and DIN standards.

These Monel bolts are available in full-threaded and half-threaded, a single-end thread or a double-end thread, and they are thermostable and experience minimum deformation at high pressure. Clients will be able to use stock ready in standard sizes or ask to have special dimensions. In every delivery, certified material test reports come along, which means that the industrial operations are safe and delivered in due time.

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What Are Monel Stud Bolts?

Monel stud bolts are high-performance fasteners produced of nickel-copper alloys (such as Monel 400 or K500) that are characterised by outstanding performance in seawater, acid and harsh chemical environments, which are essential to offshore, marine, petrochemical and chemical industries in service in such demanding applications as pipelines, pumps and pressure vessels. These bolts are of high strength, highly corrosion resistant, may have various finishes (such as PTFE) to increase durability and can be in a variety of forms (fully threaded, double-ended) to meet the rigorous industrial requirements (ASTM, ASME).

Material Grades of Monel Stud Bolts

Specification of Monel Stud Bolts

Specification Details
Material Standard ASTM B164 / ASME SB164
Compliance All International Standards: ASTM, DIN, BS
Size 1/2″ to 24″ (NPS)
Length 3 mm to 200 mm
DIN Standards DIN 931, DIN 933, DIN 912, DIN 934, DIN 6923, DIN 603, DIN 7981, DIN 970, DIN 916, DIN 7982, DIN 7985, DIN 913
Form / Head Type Hex, Threading, Square, Round, as per gauge
Thread Type UNF, BSW, BSF, METRIC, UNC, or as required
Thread Configuration ASME B1.1 2A/3A – 2B/3B Inch Unified Threads, B1.13M 6h-6G Metric Coarse Threads
UTS / Standards NPT, UNS, UNF, UNC, UNEF, NPTF
ISO Standards ISO 4032, ISO 4033, ISO 7380, ISO 4017, JIS Standards
Test Certificates EN 10204 / 3.1 Manufacturer Test Certificate, PED 97/23/EC Certified, Merkblatt AD 2000 W2 Certified
Surface Coating / Finish Cadmium Coating, Hot Dipped Galvanizing, PTFE Coated, Phosphate Coating, Teflon Coating, Xylon Coating, Zinc Coating

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Types of Monel Stud Bolts

Monel Stud Bolts Price

Unifit Fastener offers Monel Stud Bolts at competitive prices. Actual cost depends on grade (Monel 400 / K500), size, thread type, finish, and quantity.

For the latest price list and ready stock details, click “Request a Quote” or contact our team. We also provide custom sizes and threads at market‑leading prices.

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Applications of Monel Stud Bolts

  • Marine & Offshore: Pumps, seawater valves, shipbuilding, and offshore platforms.
  • Chemical & Petrochemical: Reactors, piping systems, storage tanks exposed to acids.
  • Power Generation: Boilers, turbines, and heat exchangers operating at high temperature.
  • Aerospace & Defense: Engines, exhaust assemblies, and high-stress components.
  • Industrial Machinery: Heavy-duty equipment requiring corrosion-resistant and durable fasteners.

People Ask About Monel Stud Bolts Supplier

What is Monel Stud Bolt used for?

Monel Stud Bolts are used in industries that require exceptional corrosion resistance and high mechanical strength. Common applications include marine engineering, chemical and petrochemical plants, aerospace components, power generation facilities, and offshore structures where exposure to seawater and harsh chemicals is common.

Which grades of Monel Stud Bolts are available?

Monel Stud Bolts are commonly available in grades such as Monel 400 and Monel K500. These grades are supplied in both fully threaded and half-threaded configurations to meet different industrial and structural requirements.

Are Monel Stud Bolts resistant to corrosion?

Yes, Monel Stud Bolts offer excellent resistance to corrosion, particularly in seawater, acidic, and oxidizing environments. This makes them highly suitable for use in harsh industrial and marine conditions where long-term durability is essential.