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Nimonic 80A Screws Manufacturer & Exporter in India

Explore Nimonic 80A Screws 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 Screws?

Nimonic 80A screws are high-performance 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 titanium and aluminium additions, delivering exceptional tensile strength and creep resistance at temperatures up to 815°C (1500°F).

Nimonic 80A screws are widely specified for gas turbine engines, high-temperature exhaust assemblies, and thermal cycling environments where conventional stainless steel fasteners fail due to loss of strength or oxidation. Their precise chemical balance ensures reliable performance in the most demanding aerospace, power generation, and petrochemical applications.

Quick Specifications

MaterialNimonic 80A
UNS NumberN07080
DIN Number2.4952 / 2.4631
Material StandardASTM B637 / BS HR1
Screw Standard (Metric)DIN 912 / DIN 933 / ISO 4762
Screw Standard (Inch)ASME B18.3 / B18.2.1
Thread FormISO Metric / UNC / UNF
Diameter RangeM3-M48 / 1/8"-2"
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 Bolts, Nimonic 80A Nuts, 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 Bolts
Nimonic 80A Nuts
Nimonic 80A Washers
Nimonic 80A Studs
Nimonic 80A Threaded Rods

Technical Data

Nimonic 80A Screws Dimensions, Sizes & Thread Standards

Nimonic 80A Screws are available in metric M6–M100 and inch ¼″–4″ as standard. Per DIN 912 (socket head cap), DIN 933 (hex head full thread), ISO 4762. Custom lengths in 5mm increments. Inch dimensions available per ASME B18.3 and B18.2.1. All Nimonic 80A screws dimensions conform to applicable DIN, ISO, and ASME B18 standards.

Socket Head Cap Screw Dimensions - Metric (DIN 912 / ISO 4762)

Size (M)Pitch (mm)Head Dia (mm)Head Ht (mm)Hex Socket (mm)Min L (mm)Max L (mm)
M30.55.53.02.5650
M61.0106.05.010100
M81.25138.06.012120
M101.51610.08.016150
M121.751812.010.020200
M162.02416.014.025250
M202.53020.017.030300
M243.03624.019.040400
M303.54530.022.050500
M364.05436.027.060600
M424.56342.032.080800
M485.07248.036.01001000

Dimensional & Material Standards

StandardCoversThread
DIN 912Socket head cap screwsMetric
DIN 933Hex head screws, full threadMetric
ISO 4762Socket head cap screwsMetric
ASME B18.3Socket cap screws (inch)UNC/UNF
ASME B18.2.1Hex head screws (inch)UNC/UNF
Material StandardRequirement
ASTM B637Bar/rod - UNS N07080
BS HR1Forgings & fasteners
AMS 5829Wire & bar
EN 10204 3.1Mill test certificate
EN 10204 3.2TPI-witnessed MTC

Material Chemistry

Nimonic 80A Chemical Composition

Nimonic 80A Screws 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
Silicon (Si)1.0% max
Manganese (Mn)1.0% max
Copper (Cu)0.2% max
Zirconium (Zr)0.15% max
Boron (B)0.006% max
? All heats verified by NABL-accredited spectrometry. PMI available on request.

Why Nimonic 80A Alloy Composition Matters for Screws

Ti + Al — Precipitation Hardening
Titanium and aluminium additions enable ?' precipitation hardening, giving Nimonic 80A screws their high tensile and creep strength at elevated temperatures, critical for turbine and exhaust fasteners.
High Nickel Content — Oxidation Resistance
A nickel base of 69%+ ensures outstanding resistance to oxidation and scaling up to 850°C, making these screws ideal for cyclic thermal environments.
Chromium (18–21%) — Corrosion & Hot Gas Protection
Chromium provides a stable oxide layer, protecting Nimonic 80A screws from hot gas corrosion and carburisation in gas turbines and chemical reactors.

Fastener Performance

Nimonic 80A Screws Mechanical Properties & Torque Reference

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

Screw SizeDry (Nm)Lubricated (Nm)Clamp Load (kN)
M613107.5
M8322513.5
M10655221.5
M121108831.5
M1627021658.5
M2052041691.5
M24900720132.5
?? 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 Screws Applications — Industries & End Uses

Nimonic 80A Screws 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 screws are the industry standard for turbine blade retention, combustion chamber assemblies, and exhaust system fasteners in jet engines and auxiliary power units. Their high-temperature strength and oxidation resistance ensure reliability in critical flight hardware.
Used in steam and gas turbine casings, hot section bolting, and exhaust duct connections where sustained strength at 700-800°C is required. Nimonic 80A screws prevent creep failure and maintain preload under thermal cycling.
Specified for high-performance racing exhaust manifolds, turbocharger mounting, and heat shield assemblies where stainless steel fasteners lose strength or seize due to thermal expansion.
Nimonic 80A screws are used in reformer tube sheets, radiant coil supports, and high-temperature heater assemblies exposed to carburising and oxidising atmospheres.

Nimonic 80A Screws Standards & International Certifications

Nimonic 80A Screws 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 912 DIN 913 DIN 914 DIN 915 DIN 916 DIN 6912 DIN 7984 ISO 4762 ISO 10642 ISO 14579 ASME B18.3 EN ISO 4762 IS 1367
Certifications
ISO 9001:2015NABL LabPED 2014/68/EUMTC 3.1 / 3.2

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

Partner with RealBolt — India’s leading manufacturer of certified Nimonic 80A Screws — 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
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Answers for Buyers

Nimonic 80A Screws — Frequently Asked Questions

Browse expert answers to common questions about Nimonic 80A Screws 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 screws selection and pricing.
Nimonic 80A screws are available to DIN 912 (socket head cap), DIN 933 (hex head full thread), ISO 4762, and ASME B18.3 (inch socket cap). Custom thread forms (UNC, UNF, BSW, BSF) and special lengths are available on request with typical lead times of 2-3 weeks.
Nickel-based anti-seize compound (such as Molykote P-37 or Jet-Lube Pure Nickel) is recommended for Nimonic 80A screws. Apply to threads and bearing surfaces to prevent galling and facilitate disassembly. Avoid copper-based anti-seize to prevent galvanic corrosion with nickel alloys.
Yes – Nimonic 80A screws are engineered for sustained service at temperatures up to 815°C (1500°F), retaining high tensile and creep strength. They are widely used in turbine, furnace, and exhaust applications where thermal cycling and oxidation resistance are critical.
No formal MOQ for standard metric sizes (M6-M24) held in stock – single pieces can be supplied for urgent maintenance. Custom sizes or non-standard threads typically require a 10 kg minimum batch. Quantity discounts apply 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