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Nimonic 80A Bolts Manufacturer & Exporter in India

Explore Nimonic 80A Bolts Manufacturer & Exporter in India manufactured for demanding industrial applications with reliable strength, corrosion resistance and compliance with international standards.
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-196

Min Temp

870

Max Temp

🌡

870

Suitable for continuous service up to approximately 870°C under typical operating conditions.

⚡

620

Typical tensile strength around 620 MPa depending on product form and heat treatment.

🛡

Very Good

Very Good corrosion resistance in a wide range of industrial environments.

⚖

8

Typical density is approximately 8.0 g/cm³.

Product Overview

What are Nimonic 80A Bolts?

Nimonic 80A bolts are high-strength nickel-chromium alloy fasteners manufactured from UNS N07080 bar stock, conforming to ASTM B637 and BS HR1 standards. This precipitation-hardened alloy is strengthened by additions of titanium and aluminium, providing exceptional tensile and creep resistance at temperatures up to 815°C (1500°F).

Renowned for their oxidation and scaling resistance, Nimonic 80A bolts are widely specified in gas turbine engines, high-temperature exhaust systems, and petrochemical plant bolted joints where conventional stainless steels fail. Each batch is solution treated and precipitation hardened to ensure consistent mechanical properties and long-term reliability in extreme environments.

Quick Specifications

MaterialNimonic 80A
UNS NumberN07080
DIN Number2.4952 / 2.4631
Material StandardASTM B637 / BS HR1
Bolt Standard (Metric)DIN 931 / DIN 933 / ISO 4014
Bolt Standard (Inch)ASME B18.2.1
Thread FormISO Metric / UNC / UNF
Diameter RangeM6-M64 / ¼"-2½"
Tensile Strength965 MPa (140 ksi) min
Yield Strength690 MPa (100 ksi) min
HardnessMax 35 HRC / 320 HB
? All material certified by NABL-accredited laboratory. PMI and hardness survey available on request.

Complete the Fastener Set

Other Nimonic 80A Fastener Products Available from RealBolt

RealBolt also manufactures the complete Nimonic 80A fastener range from certified nickel-chromium-cobalt superalloy bar stock, including Nimonic 80A Nuts, Nimonic 80A Screws, Nimonic 80A Washers, Nimonic 80A Studs, and Nimonic 80A Threaded Rods. All Nimonic 80A fastener types are produced to ASTM with full EN 10204 MTC 3.1/3.2 documentation.
Nimonic 80A Nuts
Nimonic 80A Screws
Nimonic 80A Washers
Nimonic 80A Studs
Nimonic 80A Threaded Rods

Technical Data

Nimonic 80A Bolts Dimensions, Sizes & Thread Standards

Nimonic 80A Bolts are available in metric M6–M100 and inch ¼″–4″ as standard. Per DIN 931 (partial thread) / DIN 933 (full thread) / ISO 4014. Custom lengths in 5mm increments. Inch dimensions available per ASME B18.2.1. All Nimonic 80A bolts dimensions are verified against applicable DIN, ISO, and ASME

Hex Bolt Dimensions - Metric (DIN 931 / ISO 4014)

Size (M)Pitch (mm)A/F (mm)Head Ht (mm)Min L (mm)Max L (mm)
M61.0104.010200
M81.25135.312250
M101.5176.416300
M121.75197.520400
M162.02410.025500
M202.53012.530600
M243.03615.040600
M303.54618.750800
M364.05522.5601000
M424.56526.0801000
M485.07530.01001200
M565.58535.01201500
M646.09540.01402000

Dimensional & Material Standards

StandardCoversThread
DIN 931Hex bolts, partial threadMetric
DIN 933Hex bolts, full threadMetric
ISO 4014Hex head screws, partialMetric
ISO 4017Hex head screws, fullMetric
ASME B18.2.1Hex & heavy hex boltsUNC/UNF
BS 1768Hex bolts, inch seriesBSW/BSF
Material StandardRequirement
ASTM B637Bar/rod - UNS N07080
BS HR1Forgings & fasteners
AMS 5829High-temp fasteners
EN 10204 3.1Mill test certificate
EN 10204 3.2TPI-witnessed MTC

Material Chemistry

Nimonic 80A Chemical Composition

Nimonic 80A Bolts are manufactured from a precipitation-hardened nickel-chromium-cobalt superalloy with titanium and aluminium additions per AMS and BS HR specifications. These elements form the gamma-prime (Ni₃Al,Ti) precipitate phase that delivers creep rupture strength above 700°C — a performance level unachievable with standard nickel or stainless alloys.

Chemical Composition per ASTM B637

ElementComposition (%)
Nickel (Ni)69.0 min
Chromium (Cr)18.0-21.0
Cobalt (Co)2.0 max
Titanium (Ti)1.8-2.7
Aluminium (Al)1.0-1.8
Carbon (C)0.10 max
Iron (Fe)3.0 max
Manganese (Mn)1.0 max
Silicon (Si)1.0 max
Copper (Cu)0.2 max
Zirconium (Zr)0.15 max
Sulphur (S)0.015 max
? All heats verified by NABL-accredited spectrometry. PMI available on request.

Why Nimonic 80A Alloy Composition Matters for Bolts

Ti + Al — Precipitation Hardening
Titanium and aluminium form gamma prime (?') precipitates, delivering high tensile and creep strength at elevated temperatures. This is essential for Nimonic 80A bolts in turbine and exhaust applications.
Cr (18–21%) — Oxidation Resistance
Chromium content ensures a stable oxide layer, protecting Nimonic 80A bolts from scaling and oxidation up to 850°C, far beyond the limits of stainless steel fasteners.
Low Carbon & Sulphur
Strict control of carbon and sulphur prevents intergranular corrosion and ensures weldability, making Nimonic 80A bolts reliable for critical high-temperature assemblies.

Fastener Performance

Nimonic 80A Bolts Mechanical Properties & Torque Reference

The table below lists mechanical properties and torque reference for Nimonic 80A Bolts per ASTM. Nimonic 80A bolts achieve 620 MPa tensile strength, with hardness, yield, and elongation values verified by NABL-accredited testing and reported in the EN 10204 MTC.

Bolt SizeDry (Nm)Lubricated (Nm)Clamp Load (kN)
M121108838
M1626020892
M20520416148
M24900720215
M3018001440340
M3631002480495
M4249503960680
M4873505880900
?? Anti-galling: Use nickel-based anti-seize (Molykote P-37 or equivalent). Lubricated values assume K=0.15. Avoid copper-based anti-seize on nickel alloys.

Industry Applications

Nimonic 80A Bolts Applications — Industries & End Uses

Nimonic 80A Bolts from RealBolt are specified across aerospace gas turbines, power generation, and high-temperature furnaces where very good corrosion resistance and 620 MPa tensile strength are required for reliable fastener performance. Click each industry below for detailed application examples.
Nimonic 80A bolts are the industry standard for turbine disc, compressor, and exhaust flange connections in jet engines and land-based gas turbines. Their high-temperature strength and oxidation resistance ensure reliable service in the hottest engine zones.
Used for bolting turbine casings, exhaust manifolds, and superheater assemblies in power plants. Nimonic 80A bolts withstand thermal cycling and creep at elevated temperatures where stainless steel fasteners fail.
Flange bolts and stud bolts for high-temperature reactors, reformers, and furnace assemblies. Nimonic 80A’s resistance to carburisation and oxidation makes it ideal for bolted joints in process heaters and cracking units.
Specified for racing exhaust manifolds, turbocharger flanges, and high-performance engine assemblies where extreme heat and vibration demand maximum bolt integrity.

Nimonic 80A Bolts Standards & International Certifications

Nimonic 80A Bolts 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, AMS material certification, heat treatment records, and first article inspection report (FAIR) — available on request for all orders.
Standards
DIN 931 DIN 933 DIN 912 ISO 4014 ISO 4017 ISO 4762 ASME B18.2.1 ASME B18.3 IS 1367
Certifications
ISO 9001:2015NABL LabPED 2014/68/EUMTC 3.1 / 3.2

Buy Nimonic 80A Bolts from India's Leading Manufacturer — Get a Competitive Quote Today

Partner with RealBolt — India’s leading manufacturer of certified Nimonic 80A Bolts — 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

Nimonic 80A Bolts — Frequently Asked Questions

Browse expert answers to common questions about Nimonic 80A Bolts from RealBolt — covering AMS specification, heat treatment, creep rupture data, max service temperature, sizes, and aerospace certification. Contact our technical team directly for project-specific guidance on Nimonic 80A bolts selection and pricing.
Nimonic 80A bolts are available to DIN 931 (metric partial thread), DIN 933 (metric full thread), ISO 4014/4017, ASME B18.2.1 (inch hex and heavy hex), and BS 1768 (inch series). Stud bolts for flanges are supplied per ASME B16.5 or custom requirements. Special thread forms (BSW, BSF, UNF) are available on request.
Nickel-based anti-seize compound (such as Molykote P-37 or Jet-Lube Pure Nickel) is recommended for Nimonic 80A bolts. Apply to threads and nut bearing faces. Reduce torque values by 20% for lubricated assembly. Avoid copper-based anti-seize to prevent galvanic corrosion.
Yes – Nimonic 80A bolts are engineered for continuous service up to 815°C (1500°F) and maintain high tensile and creep strength at these temperatures. They are widely used in gas turbines, exhaust systems, and industrial furnaces where thermal cycling and oxidation resistance are critical.
No formal MOQ for standard sizes (M8-M36) held ex-stock – single pieces can be supplied for urgent maintenance. Custom sizes or non-standard threads may require a 10 kg minimum. Quantity price breaks are available at 50, 200, and 500 pieces.

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