+912267437972

+919022636025

enquiry@real-bolt.com

Contact Us

Nimonic 75 Screws Manufacturer & Exporter in India

Explore Nimonic 75 Screws Manufacturer & Exporter in India manufactured for demanding industrial applications with reliable strength, corrosion resistance and compliance with international standards.
Request a Quote
View Products

-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 75 Screws?

Nimonic 75 screws are high-performance fasteners manufactured from a nickel-chromium alloy (UNS N06075) designed for exceptional oxidation and scaling resistance at elevated temperatures. Produced from ASTM B637 bar or wire, these screws are solution-annealed and cold drawn to achieve a balance of strength and ductility, making them ideal for high-temperature bolting applications.

With a nominal composition of 80% nickel and 20% chromium, Nimonic 75 screws offer reliable mechanical properties up to 1000°C and are widely specified in gas turbines, heat treatment equipment, and chemical process plants where stainless steels fail due to thermal creep or oxidation.

Quick Specifications

MaterialNimonic 75
UNS NumberN06075
DIN Number2.4951
Material StandardASTM B637
Screw Standard (Metric)DIN 912 / DIN 7991 / ISO 4762
Screw Standard (Inch)ASME B18.3
Thread FormISO Metric / UNC / UNF
Diameter RangeM3-M48 / 1/8"-2"
Tensile Strength800 MPa (116 ksi) min
Yield Strength340 MPa (49 ksi) min
HardnessMax 95 HRB / 220 HB
? All material certified by NABL-accredited laboratory. PMI and heat traceability available on request.

Complete the Fastener Set

Other Nimonic 75 Fastener Products Available from RealBolt

RealBolt also manufactures the complete Nimonic 75 fastener range from certified nickel-chromium-cobalt superalloy bar stock, including Nimonic 75 Bolts, Nimonic 75 Nuts, Nimonic 75 Washers, Nimonic 75 Studs, and Nimonic 75 Threaded Rods. All Nimonic 75 fastener types are produced to ASTM with full EN 10204 MTC 3.1/3.2 documentation.
Nimonic 75 Bolts
Nimonic 75 Nuts
Nimonic 75 Washers
Nimonic 75 Studs
Nimonic 75 Threaded Rods

Technical Data

Nimonic 75 Screws Dimensions, Sizes & Thread Standards

Nimonic 75 Screws are available in metric M6–M100 and inch ¼″–4″ as standard. Per DIN 912 (socket head cap), DIN 7991 (countersunk), ISO 4762 (hex socket). Custom lengths in 5mm increments. Inch dimensions available per ASME B18.3. All Nimonic 75 screws dimensions are verified against applicable DIN, ISO, and ASME

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
M40.77.04.03.0860
M50.88.55.04.01070
M61.010.06.05.01280
M81.2513.08.06.016100
M101.516.010.08.020120
M121.7518.012.010.025150
M162.024.016.014.030200
M202.530.020.017.035250
M243.036.024.019.040300
M303.545.030.022.050400
M364.054.036.027.060500
M424.563.042.032.070600
M485.072.048.036.080700

Dimensional & Material Standards

StandardCoversThread
DIN 912Socket head cap screwsMetric
DIN 7991Countersunk socket screwsMetric
ISO 4762Hex socket screwsMetric
ASME B18.3Socket cap, button, flatUNC/UNF
ISO 4026Socket set screwsMetric
ISO 7380Button head socket screwsMetric
Material StandardRequirement
ASTM B637Bar/rod - UNS N06075
BS HR5Wire/rod for fasteners
EN 10204 3.1Mill test certificate
EN 10204 3.2TPI-witnessed MTC

Material Chemistry

Nimonic 75 Chemical Composition

Nimonic 75 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)72.0 min
Chromium (Cr)19.0-21.0
Iron (Fe)5.0 max
Titanium (Ti)0.2-0.6
Carbon (C)0.08-0.15
Manganese (Mn)1.0 max
Silicon (Si)1.0 max
Copper (Cu)0.5 max
Sulfur (S)0.015 max
? All heats verified by NABL-accredited spectrometry. PMI available on request.

Why Nimonic 75 Alloy Composition Matters for Screws

High Nickel & Chromium — Oxidation Resistance
The high nickel and chromium content in Nimonic 75 screws ensures outstanding resistance to oxidation and scaling at temperatures up to 1000°C, making them ideal for furnace and turbine applications.
Titanium — Grain Stability
Titanium additions improve grain boundary stability, reducing the risk of intergranular corrosion and enhancing creep resistance under sustained high-temperature loads.
Low Carbon — Weldability
Controlled carbon content minimizes carbide precipitation, allowing Nimonic 75 screws to be welded or used in assemblies without loss of corrosion resistance or mechanical properties.

Fastener Performance

Nimonic 75 Screws Mechanical Properties & Torque Reference

The table below lists mechanical properties and torque reference for Nimonic 75 Screws per ASTM. Nimonic 75 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)
M61297.5
M8302414
M10604822
M121008032
M1625020063
M2050040098
M24850680141
?? Anti-galling: Use nickel-based anti-seize (Molykote P-37). Lubricated values assume K=0.15. Avoid copper-based anti-seize on nickel alloys.

Industry Applications

Nimonic 75 Screws Applications — Industries & End Uses

Nimonic 75 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 75 screws are widely used in gas turbine engine assemblies, including combustion chambers, afterburners, and exhaust systems, where high-temperature oxidation resistance and mechanical stability are critical.
Socket head and countersunk screws for furnace linings, radiant tube supports, and heat treatment baskets, providing reliable fastening at temperatures where stainless steel fasteners fail due to scaling or creep.
Used in chemical reactors, acid gas scrubbers, and process piping where resistance to hot oxidizing acids and thermal cycling is required. Nimonic 75 screws maintain integrity in nitric acid and mixed chemical environments.
Specified for aircraft engine nacelles, exhaust clamps, and missile components, Nimonic 75 screws deliver high strength and oxidation resistance at elevated temperatures, meeting AMS 5598 and BS HR5 requirements.

Nimonic 75 Screws Standards & International Certifications

Nimonic 75 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 75 Screws from India's Leading Manufacturer — Get a Competitive Quote Today

Partner with RealBolt — India’s leading manufacturer of certified Nimonic 75 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
+91 90226 36025
Email Us

Answers for Buyers

Nimonic 75 Screws — Frequently Asked Questions

Browse expert answers to common questions about Nimonic 75 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 75 screws selection and pricing.
Nimonic 75 socket head screws are available to DIN 912 (metric), ISO 4762, DIN 7991 (countersunk), and ASME B18.3 (inch series). Button head and set screw types are also available per ISO 7380 and ISO 4026. Custom thread forms (UNC, UNF, BSW) can be supplied on request with short lead times.
Always use a nickel-based anti-seize compound (such as Molykote P-37 or Jet-Lube Pure Nickel) on Nimonic 75 screws to prevent galling and facilitate disassembly after high-temperature service. Avoid copper-based anti-seize to prevent galvanic corrosion with nickel alloys.
Yes, Nimonic 75 screws retain mechanical strength and oxidation resistance up to 1000°C, making them suitable for continuous use in furnace, turbine, and exhaust applications where stainless steel fasteners would fail due to scaling or creep.
No formal MOQ for standard sizes (M6-M24) held ex-stock – we supply from single pieces for urgent maintenance. Custom sizes or non-standard threads may require a 10 kg minimum. Quantity price breaks 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