Nickel Fasteners

Nickel Fasteners Supplier in Mumbai, India

Nicorex Alloys is an ISO 9001 and ISO 14001 certified importer, stockist, and supplier of Nickel fasteners in Mumbai, India. We stock Nickel 200 and Nickel 201 bolts, nuts, studs, screws, washers, and threaded rods under ASTM F467, ASTM F468, ASTM B160, and ASTM B564.

Nickel fasteners are commercially pure nickel alloys with min 99.0% nickel. They offer good resistance to caustic alkalis (NaOH, KOH) at many concentrations up to the boiling point. These fasteners serve caustic soda production, chemical processing, food processing, electronics, aerospace, and pharmaceutical industries. All shipments include EN 10204/3.1B mill test certificates.

We stock a wide range of Nickel Fasteners in multiple grades, including:

Nickel Fastener Specifications

The table given below lists Nickel fastener specifications, including standards, dimensions, forms, finishes, and conditions:

Standards	ASTM F467 / ASME SF-467 (Nuts); ASTM F468 / ASME SF-468 (Bolts, Screws, Studs); ASTM B160 / ASME SB-160 (Rod & Bar); ASTM B564 / ASME SB-564 (Forgings)
Size Range	1/4″ (M6) to 4″ (M100)
Thread Forms	UNC, UNF, Metric Coarse, Metric Fine, BSW, BSF
Finishes	Bright Annealed, Pickled, Electropolished, PTFE Coated
Supply Condition	Annealed or Cold Worked (Nickel 200); Annealed (Nickel 201)

What Are Nickel Fasteners?

Nickel fasteners are joining hardware made from commercially pure nickel. Nickel 200 (0.15% C max) and Nickel 201 (0.02% C max) are the two standard grades. In caustic soda service, pure nickel resists caustic cracking at all NaOH concentrations up to 50% to the boiling point. Carbon steel and stainless steel bolts fail under these conditions. Nickel fasteners are non-contaminating, which is critical in food-grade and electronic-grade processing. Nickel 201 must be specified above 315°C (600°F) because Nickel 200 suffers graphite precipitation at grain boundaries.

Types and Forms of Nickel Fasteners

Nickel fasteners come in multiple forms for caustic, chemical, and food processing bolting.

Nickel Hex Bolts

Nickel Stud Bolts (Double-End Studs)

Nickel Socket Head Cap Screws

Nickel Hex Nuts (Heavy Hex, Lock, Flange)

Nickel Washers (Flat, Spring, Belleville)

Nickel Threaded Rods

Nickel U-Bolts

Nickel Set Screws

Nickel Eye Bolts

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Available Grades of Nickel Fasteners

Nicorex Alloys stocks Nickel fasteners in two grades.

Industries and Applications of Nickel Fasteners

Nickel fasteners are used in seven key industries where resistance to caustic chemicals and high purity are critical:

Caustic Soda Production: Evaporator studs, NaOH tank bolts, and piping fasteners.
Chemical Processing: Reactor bolts and heat exchanger studs for caustic and chlorine service.
Food and Beverage: Dairy equipment and food-contact fasteners made from non-contaminating materials.
Pharmaceutical: Reactor bolts and hardware for purified water systems.
Electronics: Fasteners for semiconductor fabrication and electroplating equipment.
Aerospace: Cryogenic system bolting and rocket motor components.
Power Generation: FGD system fasteners and scrubber bolting.

Frequently Asked Questions

What types of Nickel fasteners does Nicorex Alloys supply?

Nicorex Alloys stocks and supplies hex bolts, stud bolts (double-end studs), socket head cap screws, hex nuts (heavy hex, lock, flange), flat and spring washers, Belleville washers, threaded rods, U-bolts, set screws, eye bolts, and precision screw machine products in Nickel 200 (UNS N02200) and Nickel 201 (UNS N02201) with UNC, UNF, metric, BSW, and BSF thread forms. All fasteners are supplied with EN 10204-3.1 Mill Test Certificate.

When Should I Use Nickel 201 Instead of Nickel 200?

Specify Nickel 201 when service exceeds 315°C (600°F). The higher carbon in Nickel 200 causes graphite precipitation and embrittlement at these temperatures. Below 315°C, Nickel 200 is preferred for higher strength.

Why are Nickel Bolts Used Over Stainless Steel in Caustic Service?

Stainless steel bolts suffer caustic stress corrosion cracking in NaOH above 25% at temperatures over 100°C. Nickel 200/201 resists caustic cracking at all concentrations up to 50% NaOH to the boiling point.

How Do Nickel Fasteners Compare to Monel Fasteners?

Nickel 200/201 gives high caustic alkali resistance. Monel 400 gives better seawater and hydrofluoric acid resistance with higher strength. Choose Nickel for caustic service, Monel for seawater and HF acid.

Can Nickel fasteners be used in oxidising acid environments?

No. Nickel 200/201 has poor resistance to oxidising acids like nitric acid, concentrated sulfuric acid (above 80% at elevated temperatures), and chromic acid. For oxidising acid service, specify Hastelloy C-family alloys, titanium, or high-chromium stainless steels instead.

What is the maximum service temperature for Nickel fasteners?

The maximum service temperature for nickel fasteners is between 1,300°F and 2,000°F (700 oC-1090 oC).

What Size Range is Available for Nickel Fasteners?

ASTM F468 covers 1/4″ (M6) to 1-1/2″ (M36) as standard. Larger sizes up to 4″ (M100) come from ASTM B160 bar stock. All shipments include EN 10204/3.1B mill test certificates.