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Hastelloy C2000 Nuts Manufacturer & Exporter in India

Explore Hastelloy C2000 Nuts Manufacturer & Exporter in India manufactured for demanding industrial applications with reliable strength, corrosion resistance and compliance with international standards.
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-200

Min Temp

1100

Max Temp

🌡

1100

Suitable for continuous service up to approximately 1100°C under typical operating conditions.

⚡

800

Typical tensile strength around 800 MPa depending on product form and heat treatment.

🛡

Excellent

Excellent corrosion resistance in a wide range of industrial environments.

⚖

8.9

Typical density is approximately 8.9 g/cm³.

Product Overview

What are Hastelloy C2000 Nuts?

Hastelloy C2000 nuts are nickel-chromium-molybdenum-copper alloy fasteners manufactured from UNS N06200 bar stock conforming to ASTM B574. The alloy’s unique combination of chromium (22-24%), molybdenum (15-17%), and copper (1.5-2.5%) delivers outstanding resistance to both oxidizing and reducing corrosive media – a dual capability no other single nickel alloy achieves.

With a PREN exceeding 55, Hastelloy C2000 nuts resist chloride-induced pitting, crevice corrosion, and stress corrosion cracking in aggressive process environments including sulfuric acid, hydrochloric acid, and mixed acid streams. These nuts are specified for critical flange connections in chemical processing, pharmaceutical reactors, and pollution control systems where standard C-276 or 316L stainless fasteners fail prematurely.

Quick Specifications

MaterialHastelloy C2000
UNS NumberN06200
DIN Number2.4675
Material StandardASTM B574
Nut Standard (Metric)DIN 934 / DIN 6915 / ISO 4032
Nut Standard (Inch)ASME B18.2.2
Thread FormISO Metric / UNC / UNF
Diameter RangeM6-M100 / ¼"-4"
Tensile Strength690 MPa (100 ksi) min
Yield Strength310 MPa (45 ksi) min
HardnessMax 35 HRC / 240 HB
? All material certified by NABL-accredited laboratory. PMI available on request.

Complete the Fastener Set

Other Hastelloy C2000 Fastener Products Available from RealBolt

RealBolt also manufactures the complete Hastelloy C2000 fastener range from certified nickel-molybdenum-chromium superalloy bar stock, including Hastelloy C2000 Bolts, Hastelloy C2000 Screws, Hastelloy C2000 Washers, Hastelloy C2000 Studs, and Hastelloy C2000 Threaded Rods. All Hastelloy C2000 fastener types are produced to ASTM with full EN 10204 MTC 3.1/3.2 documentation.
Hastelloy C2000 Bolts
Hastelloy C2000 Screws
Hastelloy C2000 Washers
Hastelloy C2000 Studs
Hastelloy C2000 Threaded Rods

Technical Data

Hastelloy C2000 Nuts Dimensions, Sizes & Thread Standards

Hastelloy C2000 Nuts are available in metric M6–M100 and inch ¼″–4″ as standard. Per DIN 934 (hex nuts) / DIN 6915 (heavy hex nuts) / ISO 4032. Custom thread pitches available. Inch dimensions per ASME B18.2.2. All Hastelloy C2000 nuts dimensions are verified against applicable DIN, ISO, and ASME B18

Hex Nut Dimensions - Metric (DIN 934 / ISO 4032)

Size (M)Pitch (mm)A/F (mm)Nut Height (mm)A/C (mm)
M61.0105.011.05
M81.25136.514.38
M101.5178.018.90
M121.751910.020.03
M162.02413.026.75
M202.53016.032.95
M243.03619.039.55
M303.54624.050.85
M364.05529.060.79
M424.56534.071.30
M485.07538.082.60
M565.58545.093.56
M646.09551.0104.86
M726.010558.0116.16
M806.011564.0127.46
M1006.014580.0160.00

Dimensional & Material Standards

StandardCoversThread
DIN 934Hex nuts, standard heightMetric
DIN 6915Heavy hex nuts, high-strengthMetric
ISO 4032Hex nuts, style 1Metric
ISO 4033Hex nuts, style 2 (tall)Metric
ASME B18.2.2Hex & heavy hex nutsUNC/UNF
ASME B16.5Heavy hex nuts for flangesUNC
MSS SP-75Heavy hex nuts, high-pressureUNC
Material StandardRequirement
ASTM B574Bar/rod - UNS N06200
ASTM F467Fastener mechanical properties
NACE MR0175Sour service =35 HRC
EN 10204 3.1Mill test certificate
EN 10204 3.2TPI-witnessed MTC

Material Chemistry

Hastelloy C2000 Chemical Composition

Hastelloy C2000 Nuts derive their exceptional acid corrosion resistance from a precisely controlled nickel-molybdenum-chromium composition per ASTM. High molybdenum and tungsten content suppresses pitting and reducing-acid attack; ultra-low carbon (0.01% max) eliminates sensitization risk in welded assemblies. Full elemental composition is certified in the EN 10204 MTC supplied with every Hastelloy C2000 nuts order from RealBolt.

Chemical Composition per ASTM B574

ElementComposition (%)
Nickel (Ni)Balance (min 59%)
Chromium (Cr)22.0-24.0%
Molybdenum (Mo)15.0-17.0%
Copper (Cu)1.5-2.5%
Iron (Fe)3.0% max
Carbon (C)0.01% max
Manganese (Mn)0.50% max
Silicon (Si)0.08% max
Cobalt (Co)2.0% max
Tungsten (W)0.50% max
? All heats verified by NABL-accredited spectrometry. PMI available on request.

Why Hastelloy C2000 Alloy Composition Matters for Nuts

Mo (15–17%) — Superior Pitting & Crevice Resistance
The elevated molybdenum content gives Hastelloy C2000 a PREN exceeding 55, providing exceptional resistance to crevice corrosion in the thread engagement zone and under nut bearing faces — the most vulnerable areas in bolted flange assemblies exposed to chloride-bearing process fluids.
Cu (1.5–2.5%) — Reducing Acid Performance
Copper is the defining addition that separates C2000 from C-276. It dramatically improves resistance to reducing acids including sulfuric acid at all concentrations and hydrochloric acid, making C2000 nuts the preferred choice for mixed-acid reactor closures where oxidizing and reducing conditions alternate.
Ultra-Low Carbon (0.01% max) — Sensitization-Free
The extremely low carbon ceiling eliminates any risk of grain boundary carbide precipitation during hot forming or welding. Hastelloy C2000 nuts retain full intergranular corrosion resistance in the as-manufactured condition without requiring solution annealing after machining.

Fastener Performance

Hastelloy C2000 Nuts Mechanical Properties & Torque Reference

The table below lists mechanical properties and torque reference for Hastelloy C2000 Nuts per ASTM. Hastelloy C2000 nuts achieve 800 MPa tensile strength, with hardness, yield, and elongation values verified by NABL-accredited testing and reported in the EN 10204 MTC.

Tightening Torque Reference - Hastelloy C2000 Nuts

Nut SizeDry (Nm)Lubricated (Nm)Clamp Load (kN)
M12756028
M1618514868
M20370296109
M24640512158
M3012801024251
M3622201776364
M4235402832501
M4852604208659
?? Anti-galling: Use nickel-based anti-seize (Molykote P-37 or Bostik Never-Seez Pure Nickel). Lubricated values assume K=0.15. Never use copper-based anti-seize on nickel alloys - galvanic incompatibility accelerates thread corrosion.

Industry Applications

Hastelloy C2000 Nuts Applications — Industries & End Uses

Hastelloy C2000 Nuts from RealBolt are specified across chemical processing, pharmaceutical, oil and gas, and FGD where excellent corrosion resistance and 800 MPa tensile strength are required for reliable fastener performance. Click each industry below for detailed application examples. Select an industry below to see specific Hastelloy C2000 nuts application details and RealBolt stock availability.
Hastelloy C2000 heavy hex nuts are the preferred fastener for reactor closure flanges, agitator nozzle connections, and heat exchanger channel covers in plants processing sulfuric acid, hydrochloric acid, and mixed acid streams. The copper addition provides reducing acid resistance that C-276 cannot match, making C2000 nuts the definitive choice where acid concentration and temperature fluctuate between oxidizing and reducing regimes.
Hex nuts and coupling nuts for high-purity reactor vessels, distillation column flanges, and solvent recovery system connections where contamination control, crevice corrosion resistance, and compliance with FDA material traceability requirements are mandatory. Hastelloy C2000 nuts are supplied with full EN 10204 3.1 MTCs and are compatible with CIP/SIP cleaning protocols.
Heavy hex nuts for flue gas desulphurisation (FGD) absorber tower flanges, wet scrubber internals, and stack gas ductwork connections where saturated HCl and SO2 condensate at sub-dewpoint temperatures rapidly destroy stainless steel and even C-276 fasteners. C2000’s superior chloride and sulfuric acid resistance extends maintenance intervals significantly.
Flange nuts for chlorine dioxide bleaching stage piping, washer drum connections, and bleach liquor storage tank nozzles. Hastelloy C2000 nuts withstand the combined attack of hypochlorite, chlorine dioxide, and acidic bleach filtrate that causes rapid stress corrosion cracking in duplex stainless and C-276 fasteners at elevated temperatures.

Hastelloy C2000 Nuts Standards & International Certifications

Hastelloy C2000 Nuts from RealBolt Engineering Industries are manufactured to internationally recognised fastener dimensional standards covering thread form, tolerances, strength grades, and quality requirements. Every batch ships with EN 10204 MTC 3.1/3.2, PMI (XRF), NACE MR0175/ISO 15156, and NABL-accredited lab reports — available on request for all orders.
Standards
DIN 934 ISO 4032 ASME B18.2.2 IS 1364 IS 1367
Certifications
ISO 9001:2015NACE MR0175NABL LabPED 2014/68/EUMTC 3.1 / 3.2

Buy Hastelloy C2000 Nuts from India's Leading Manufacturer — Get a Competitive Quote Today

Partner with RealBolt — India’s leading manufacturer of certified Hastelloy C2000 Nuts — for competitive pricing, EN 10204 MTC 3.1/3.2 documentation, and fast Mumbai dispatch. Standard sizes are ex-stock; custom dimensions accepted with 2–3 week lead time. Request your quote today.
022-6743-7972
+91 90226 36025
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Answers for Buyers

Hastelloy C2000 Nuts — Frequently Asked Questions

Browse expert answers to common questions about Hastelloy C2000 Nuts from RealBolt — covering acid corrosion resistance, NACE MR0175 compliance, ASTM standards, available sizes, and MTC documentation. Contact our technical team directly for project-specific guidance on Hastelloy C2000 nuts selection and pricing.
Hastelloy C2000 hex nuts are manufactured to DIN 934 (standard hex, metric), DIN 6915 (heavy hex, metric), ISO 4032 (style 1), ISO 4033 (style 2 tall), and ASME B18.2.2 (inch hex and heavy hex). Heavy hex nuts for ASME B16.5 flange stud bolt sets are supplied per ASME B18.2.2 heavy series. Coupling nuts, lock nuts, and flange nuts are available on request. Custom thread forms including BSW, BSF, and BSPP are produced with a 15 working day lead time.
Yes – Hastelloy C2000 nuts are fully compatible with C-276 (UNS N10276) stud bolts. Both alloys share similar hardness ranges and thread geometry, and there is no significant galvanic potential difference between them. For mixed assemblies, always apply nickel-based anti-seize to all thread contact surfaces and nut bearing faces. Avoid mixing C2000 nuts with carbon steel or low-alloy steel fasteners in corrosive environments, as galvanic coupling will accelerate corrosion of the less noble material.
The copper addition (1.5-2.5%) in C2000 is the critical differentiator. In reducing acid environments – particularly sulfuric acid at concentrations below 65% and hydrochloric acid – copper significantly lowers the corrosion rate compared to C-276. Independent corrosion testing shows C2000 outperforms C-276 in H2SO4 at 70°C across all concentrations from 10% to 80%. For process flanges where acid concentration varies or where both oxidizing and reducing conditions occur, C2000 nuts provide a single-alloy solution that C-276 cannot reliably deliver.
Standard sizes M12 through M36 and ½” through 1½” are held ex-stock with no formal MOQ – single-piece supply is available for emergency maintenance and shutdown requirements. Custom sizes and non-standard thread pitches carry a minimum of 10 kg per size. ASME B16.5 heavy hex nut sets are supplied by the set with no minimum quantity. Volume price breaks apply at 100 pieces, 500 pieces, and 1,000 pieces per size.

Industrial Cities We Serve:

  • Ahmedabad
  • Aurangabad
  • Bengaluru
  • Chennai
  • Coimbatore
  • Faridabad
  • Gandhidham
  • Greater Noida
  • Gurugram
  • Hazira
  • Hosur
  • Hyderabad
  • Jamnagar
  • Jamshedpur
  • Ludhiana
  • Mumbai
  • Mundra
  • Mysuru
  • Nagpur
  • Nashik
  • Navi Mumbai
  • Noida
  • Pune
  • Rajkot
  • Sanand
  • Surat
  • Thane
  • Tiruppur
  • Vadodara
  • Visakhapatnam

Countries We Export To:

  • US
  • Canada
  • Mexico
  • Germany
  • UK
  • France
  • Italy
  • Spain
  • Netherlands
  • Belgium
  • Poland
  • Sweden
  • Norway
  • Denmark
  • Turkey
  • UAE
  • Saudi Arabia
  • Qatar
  • Oman
  • Kuwait
  • Bahrain
  • South Africa
  • Egypt
  • Nigeria
  • Australia
  • New Zealand
  • Singapore
  • Malaysia
  • Indonesia
  • Thailand
  • Vietnam
  • South Korea
  • Japan
  • Brazil