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Monel K500 Threaded Rods Manufacturer & Exporter in India

Explore Monel K500 Threaded Rods 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

550

Max Temp

🌡

550

Suitable for continuous service up to approximately 550°C under typical operating conditions.

⚡

550

Typical tensile strength around 550 MPa depending on product form and heat treatment.

🛡

Excellent

Excellent corrosion resistance in a wide range of industrial environments.

⚖

8.8

Typical density is approximately 8.8 g/cm³.

Product Overview

What are Monel K500 Threaded Rods?

Monel K500 threaded rods are nickel-copper alloy fasteners manufactured from UNS N05500 bar stock conforming to ASTM B865. The alloy combines the corrosion resistance of Monel 400 with significantly enhanced mechanical strength achieved through precipitation hardening via aluminium (2.30-3.15%) and titanium (0.35-0.85%), delivering a minimum tensile strength of 1100 MPa in the age-hardened condition.

Monel K500 threaded rods are specified under NACE MR0175/ISO 15156 for sour-service pump shafting, valve stems, and subsea fastener applications. The alloy’s resistance to seawater corrosion, low magnetic permeability, and exceptional resistance to stress corrosion cracking make it the preferred choice for marine, offshore, and chemical processing industries worldwide.

Quick Specifications

MaterialMonel K500
UNS NumberN05500
DIN Number2.4375
Material StandardASTM B865
Threaded Rod Standard (Metric)DIN 975 / DIN 976 / ISO 888
Threaded Rod Standard (Inch)ASME B18.31.3
Thread FormISO Metric / UNC / UNF
Diameter RangeM6-M100 / ¼"-4"
Tensile Strength1100 MPa (160 ksi) min
Yield Strength790 MPa (115 ksi) min
HardnessMax 35 HRC / 330 HB
? All material certified by NABL-accredited laboratory. PMI available on request.

Complete the Fastener Set

Other Monel K500 Fastener Products Available from RealBolt

RealBolt also manufactures the complete Monel K500 fastener range from certified nickel-copper alloy bar stock, including Monel K500 Bolts, Monel K500 Nuts, Monel K500 Screws, Monel K500 Washers, and Monel K500 Studs. All Monel K500 fastener types are produced to ASTM with full EN 10204 MTC 3.1/3.2 documentation.
Monel K500 Bolts
Monel K500 Nuts
Monel K500 Screws
Monel K500 Washers
Monel K500 Studs

Technical Data

Monel K500 Threaded Rods Dimensions, Sizes & Thread Standards

Monel K500 Threaded Rods are available in metric M6–M100 and inch ¼″–4″ as standard. Per DIN 975 (full thread rod) / DIN 976 (stud ends) / ISO 888. Custom lengths available. Inch dimensions per ASME B18.31.3. All Monel K500 threaded rods dimensions are verified against applicable DIN, ISO, and ASME

Threaded Rod Dimensions - Metric (DIN 975 / ISO 888)

Size (M)Pitch (mm)Nom. Dia (mm)Stress Area (mm²)Min L (mm)Max L (mm)
M61.06.020.11001000
M81.258.036.61001000
M101.510.058.01002000
M121.7512.084.31002000
M162.016.0157.01003000
M202.520.0245.01003000
M243.024.0353.01003000
M303.530.0561.02004000
M364.036.0817.02004000
M424.542.01120.02004000
M485.048.01470.02006000
M565.556.02030.02006000
M646.064.02680.02006000
M726.072.03460.02006000
M806.080.04340.02006000
M1006.0100.06990.02006000

Dimensional & Material Standards

StandardCoversThread
DIN 975Fully threaded rods, standard lengthsMetric
DIN 976Threaded studs with reduced shankMetric
ISO 888Bolts, screws and studs - lengthsMetric
ASME B18.31.3Continuous threaded rodsUNC/UNF
ASME B16.5Stud bolts for flangesUNC
MSS SP-75High-pressure stud boltsUNC
Material StandardRequirement
ASTM B865Bar/rod - UNS N05500
ASTM F468Fastener mechanical properties
NACE MR0175Sour service =35 HRC
EN 10204 3.1Mill test certificate
EN 10204 3.2TPI-witnessed MTC

Material Chemistry

Monel K500 Chemical Composition

Monel K500 Threaded Rods are produced from a nickel-copper alloy containing 63% minimum nickel and 27–34% copper, with elemental limits certified to ASTM. The nickel base delivers seawater and HF acid immunity; copper additions enhance ductility; and in Monel K500, aluminium and titanium additions enable age-hardened strength above 896 MPa.

Chemical Composition per ASTM B865

ElementComposition (%)
Nickel (Ni)63.0% min
Copper (Cu)27.0-33.0%
Aluminium (Al)2.30-3.15%
Titanium (Ti)0.35-0.85%
Iron (Fe)2.0% max
Carbon (C)0.25% max
Manganese (Mn)1.5% max
Silicon (Si)0.50% max
Sulphur (S)0.010% max
? All heats verified by NABL-accredited spectrometry. PMI available on request.

Why Monel K500 Alloy Composition Matters for Threaded Rods

Al + Ti — Precipitation Hardening Mechanism
Aluminium and titanium combine during age hardening to form Ni3(Al,Ti) gamma-prime precipitates, raising tensile strength to 1100 MPa minimum. This makes Monel K500 threaded rods significantly stronger than annealed Monel 400 while retaining the same corrosion resistance in seawater and reducing acids.
Ni-Cu Base — Seawater and Acid Resistance
The high nickel-copper ratio provides outstanding resistance to seawater corrosion, hydrofluoric acid, and sulphuric acid at moderate concentrations. Threaded rods in marine splash zones and submerged pump column assemblies perform without protective coatings or cathodic protection.
Low Magnetic Permeability
Monel K500 in the annealed condition exhibits near-non-magnetic behaviour (µr < 1.002), making it suitable for minesweeping equipment, compass binnacle hardware, and sensitive instrumentation mounting where magnetic interference must be minimised.

Fastener Performance

Monel K500 Threaded Rods Mechanical Properties & Torque Reference

The table below lists mechanical properties and torque reference for Monel K500 Threaded Rods per ASTM. Monel K500 threaded rods achieve 550 MPa tensile strength, with hardness, yield, and elongation values verified by NABL-accredited testing and reported in the EN 10204 MTC.

Tightening Torque Reference - Monel K500 Threaded Rods

Rod SizeDry (Nm)Lubricated (Nm)Clamp Load (kN)
M121108840
M1626521296
M20530424154
M24920736223
M3018401472355
M3632002560516
M4251004080710
M4875606048934
?? 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-copper alloys - galvanic incompatibility accelerates thread corrosion.

Industry Applications

Monel K500 Threaded Rods Applications — Industries & End Uses

Monel K500 Threaded Rods from RealBolt are specified across marine, HF alkylation, desalination, and chemical processing where excellent corrosion resistance and 550 MPa tensile strength are required for reliable fastener performance. Click each industry below for detailed application examples. Select an industry below to see specific Monel K500 threaded rods application details and RealBolt stock availability.
Monel K500 threaded rods and studs are the standard specification for vertical turbine pump column assemblies, propeller shaft tie rods, and rudder stock fasteners in seawater service. The combination of 1100 MPa tensile strength and full immunity to seawater pitting eliminates the need for protective coatings in splash-zone and submerged applications. NORSOK M-630 listed.
Threaded rods in Monel K500 are specified for gate valve stem extensions, wellhead instrument tubing supports, and subsea control module fasteners where resistance to H2S sour service and chloride stress corrosion cracking is mandatory. Compliant with NACE MR0175/ISO 15156 at hardness =35 HRC.
Monel K500 threaded rods are the preferred fastener material for hydrofluoric acid alkylation unit piping flanges, reactor vessel closures, and heat exchanger channel covers. The alloy resists HF acid at all concentrations and temperatures up to 150°C, outperforming all grades of stainless steel and Hastelloy C276 in anhydrous HF service.
Low magnetic permeability makes Monel K500 threaded rods essential for minesweeping gear, sonar dome fasteners, and degaussing system hardware aboard naval vessels. The material meets MIL-N-24106 and DEF STAN 02-833 requirements for non-magnetic fasteners in sensitive naval applications.

Monel K500 Threaded Rods Standards & International Certifications

Monel K500 Threaded Rods 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, Lloyds Register or DNV certification, NACE MR0175, and PMI (XRF) reports — available on request for all orders.
Standards
DIN 975 DIN 976-1 ASME B18.31.2 IS 1367 IS 1364
Certifications
ISO 9001:2015NACE MR0175NABL LabPED 2014/68/EUMTC 3.1 / 3.2

Buy Monel K500 Threaded Rods from India's Leading Manufacturer — Get a Competitive Quote Today

Partner with RealBolt — India’s leading manufacturer of certified Monel K500 Threaded Rods — 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.
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Answers for Buyers

Monel K500 Threaded Rods — Frequently Asked Questions

Browse expert answers to common questions about Monel K500 Threaded Rods from RealBolt — covering Monel 400 vs K500 selection, seawater and HF acid resistance, ASTM B164/B865, sizes, and MTC documentation. Contact our technical team directly for project-specific guidance on Monel K500 threaded rods selection and pricing.
Monel K500 threaded rods are manufactured to DIN 975 (fully threaded metric rods), DIN 976 (metric studs with reduced shank), ISO 888, and ASME B18.31.3 for inch continuous threaded rods. Standard metric lengths are 1000 mm and 2000 mm per DIN 975, with custom cut lengths available in any increment. Inch sizes from ¼” to 4″ diameter are available in 3-foot, 6-foot, and 12-foot lengths, or cut to order. Special thread forms including BSW, BSF, and BSPP are available with 15 working day lead time.
Yes – Monel K500 threaded rods comply with NACE MR0175/ISO 15156 for sour service when supplied in the age-hardened condition with hardness not exceeding 35 HRC. Each rod is hardness-tested and the results are documented on the EN 10204 3.1 MTC. For critical sour service applications, we supply individual hardness survey reports per NACE MR0175 Part 1 Annex A on request. The alloy is also listed in NORSOK M-630 MDS N05 for offshore fastener applications.
Monel 400 (UNS N04400) is a solid-solution alloy with a tensile strength of approximately 550 MPa in the annealed condition. Monel K500 (UNS N05500) is the precipitation-hardened variant, with aluminium and titanium additions that raise tensile strength to 1100 MPa minimum after age hardening – roughly double the strength of Monel 400. Both alloys share identical corrosion resistance in seawater, HF acid, and chloride environments. Monel K500 is specified wherever higher mechanical loads, vibration fatigue, or reduced fastener diameter is required. Monel 400 is preferred where weldability and lower cost are priorities.
Use a pure nickel-based anti-seize compound such as Molykote P-37, Bostik Never-Seez Pure Nickel, or Jet-Lube KOPR-KOTE Pure Nickel. Apply to the full thread length and nut bearing faces before assembly. Reduce calculated dry torque values by 20% when using anti-seize (K factor = 0.15). Do not use copper-based or zinc-based anti-seize on Monel K500 – the galvanic potential difference between copper and nickel-copper alloy in the presence of moisture accelerates crevice corrosion under the nut bearing face and within the thread engagement zone.

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
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Countries We Export To:

  • US
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