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SS 420 Threaded Rods Manufacturer & Exporter in India

Explore SS 420 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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-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 SS 420 Threaded Rods?

SS 420 threaded rods are high-strength stainless steel fasteners manufactured from martensitic grade 420 bar, conforming to ASTM A276 and ASTM A493. Known for their excellent hardness and moderate corrosion resistance, these rods are heat-treatable to achieve high tensile strength and are widely used in mechanical, structural, and engineering applications where wear resistance and strength are critical.

With a chromium content of 12-14%, SS 420 threaded rods offer better corrosion resistance than carbon steel, especially in mildly corrosive environments. They are commonly specified for pump shafts, valve stems, and bolting in food processing, chemical, and marine industries where both mechanical performance and hygiene are required.

Quick Specifications

MaterialStainless Steel 420
UNS NumberS42000
DIN Number1.4021
Material StandardASTM A276 / ASTM A493
Rod Standard (Metric)DIN 975 / DIN 976
Rod Standard (Inch)ASME B18.31.3
Thread FormISO Metric / UNC / UNF
Diameter RangeM6-M64 / ¼"-2½"
Tensile Strength700-950 MPa (min, heat treated)
Yield Strength= 500 MPa
HardnessUp to 50 HRC (heat treated)
? All material certified by NABL-accredited laboratory. PMI and hardness survey available on request.

Complete the Fastener Set

Other SS 420 Fastener Products Available from RealBolt

RealBolt also manufactures the complete SS 420 fastener range from certified stainless steel bar stock, including SS 420 Bolts, SS 420 Nuts, SS 420 Screws, SS 420 Washers, and SS 420 Studs. All SS 420 fastener types are produced to ASTM with full EN 10204 MTC 3.1/3.2 documentation.
SS 420 Bolts
SS 420 Nuts
SS 420 Screws
SS 420 Washers
SS 420 Studs

Technical Data

SS 420 Threaded Rods Dimensions, Sizes & Thread Standards

SS 420 Threaded Rods are available in metric M6–M100 and inch ¼″–4″ as standard. Per DIN 975 (full thread) / DIN 976 (studs) / ASME B18.31.3. Custom lengths up to 6 meters. Inch and metric threads available. All SS 420 threaded rods dimensions are verified against applicable DIN, ISO, and

Threaded Rod Dimensions - Metric (DIN 975)

Size (M)Pitch (mm)Major Dia (mm)Length Range (mm)
M61.06.0100-2000
M81.258.0100-3000
M101.510.0100-3000
M121.7512.0100-3000
M162.016.0100-4000
M202.520.0100-6000
M243.024.0100-6000
M303.530.0100-6000
M364.036.0100-6000
M424.542.0100-6000
M485.048.0100-6000
M565.556.0100-6000
M646.064.0100-6000

Dimensional & Material Standards

StandardCoversThread
DIN 975Threaded rods, full threadMetric
DIN 976Stud bolts, double endMetric
ASME B18.31.3Threaded rods, inchUNC/UNF
ISO 898-1Mechanical propertiesMetric
Material StandardRequirement
ASTM A276SS 420 bar/rod
ASTM A493SS 420 wire
EN 10204 3.1Mill test certificate
EN 10204 3.2TPI-witnessed MTC

Material Chemistry

SS 420 Chemical Composition

SS 420 Threaded Rods are manufactured from an iron-chromium-nickel alloy with chromium (16–26%), nickel (8–28%), and grade-specific molybdenum additions per ASTM and ASTM A193/A194. Chromium content governs the self-healing passive oxide film; molybdenum (2–6%) enhances chloride pitting resistance; and carbon content determines sensitization risk in welded assemblies.

Chemical Composition per ASTM A276

ElementComposition (%)
Chromium (Cr)12.0-14.0
Carbon (C)0.15 max
Manganese (Mn)1.00 max
Silicon (Si)1.00 max
Phosphorus (P)0.04 max
Sulfur (S)0.03 max
Nickel (Ni)0.75 max
Iron (Fe)Balance
? All heats verified by NABL-accredited spectrometry. PMI available on request.

Why SS 420 Alloy Composition Matters for Threaded Rods

High Chromium (12–14%) — Corrosion Resistance
The elevated chromium content in SS 420 forms a passive oxide layer, providing moderate corrosion resistance in water, steam, and mild chemicals, making it suitable for threaded rods in damp or mildly corrosive environments.
High Carbon — Hardening Capability
SS 420’s higher carbon content allows it to be heat treated to high hardness (up to 50 HRC), giving threaded rods excellent wear resistance and strength for demanding mechanical applications.
Martensitic Structure — Machinability & Strength
The martensitic microstructure of SS 420 enables easy machining and threading, while maintaining high tensile and yield strength after heat treatment, ideal for custom-length threaded rods and studs.

Fastener Performance

SS 420 Threaded Rods Mechanical Properties & Torque Reference

The table below lists mechanical properties and torque reference for SS 420 Threaded Rods per ASTM. SS 420 threaded rods achieve 620 MPa tensile strength, with hardness, yield, and elongation values verified by NABL-accredited testing and reported in the EN 10204 MTC.

Rod SizeDry (Nm)Lubricated (Nm)Clamp Load (kN)
M12806430
M1620016060
M2040032095
M24690552140
M3013501080220
M3623001840320
M4235002800430
M4852004160570
?? Anti-galling: Use molybdenum-based anti-seize for SS 420. Lubricated values assume K=0.15. Avoid copper-based anti-seize to prevent galvanic corrosion.

Industry Applications

SS 420 Threaded Rods Applications — Industries & End Uses

SS 420 Threaded Rods from RealBolt are specified across food and dairy, pharmaceutical, marine, chemical processing, and oil and gas where very good corrosion resistance and 620 MPa tensile strength are required for reliable fastener performance. Click each industry below for detailed application examples.
SS 420 threaded rods are used for securing turbine casings, boiler internals, and high-strength assemblies in power plants, where heat resistance and mechanical strength are essential for safe operation and long service life.
Used in food-grade machinery, conveyor systems, and packaging lines, SS 420 threaded rods provide hygienic, corrosion-resistant fastening with the added benefit of high wear resistance for moving parts and assemblies.
Threaded rods for chemical reactors, process piping supports, and equipment mounting in environments exposed to mild acids, alkalis, and cleaning agents, where SS 420’s moderate corrosion resistance and high strength are required.
SS 420 threaded rods are specified for pump shafts, valve stems, and marine hardware, offering good resistance to fresh water and steam, and high mechanical strength for dynamic loads and vibration.

SS 420 Threaded Rods Standards & International Certifications

SS 420 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, hardness test certificate, ISO 3506 material certification, and NABL-accredited lab reports — available on request for all orders.
Standards
DIN 975 DIN 976-1 ASME B18.31.2 IS 1367 IS 1364
Certifications
ISO 9001:2015PED 2014/68/EUNABL LabMTC 3.1 / 3.2

Buy SS 420 Threaded Rods from India's Leading Manufacturer — Get a Competitive Quote Today

Partner with RealBolt — India’s leading manufacturer of certified SS 420 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.
022-6743-7972
+91 90226 36025
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Answers for Buyers

SS 420 Threaded Rods — Frequently Asked Questions

Browse expert answers to common questions about SS 420 Threaded Rods from RealBolt — covering ASTM A193/A194 grades, chloride resistance, temperature limits, sensitization, sizes, and MTC documentation. Contact our technical team directly for project-specific guidance on SS 420 threaded rods selection and pricing.
SS 420 threaded rods are available to DIN 975 (full thread), DIN 976 (studs), and ASME B18.31.3 (inch series). Metric and inch threads are supplied as standard, with custom thread forms (BSW, BSF, Whitworth) available on request. All rods are manufactured from ASTM A276 or A493 bar with full traceability.
Use a molybdenum-based anti-seize compound (such as Molykote 1000 or Loctite LB 8012) on SS 420 threaded rods to prevent galling and seizing during assembly. Avoid copper-based anti-seize to minimize galvanic corrosion risk. Lubricated torque values should be reduced by 20% compared to dry assembly.
Yes – SS 420 threaded rods are commonly used in food processing and packaging equipment due to their moderate corrosion resistance, high hardness, and ability to be polished to a hygienic finish. They are suitable for environments requiring regular cleaning and exposure to mild chemicals.
There is no formal MOQ for standard sizes (M8-M30) held in stock – we supply from single pieces for urgent maintenance. Custom diameters or cut-to-length rods may require a minimum order of 10 kg. Quantity price breaks are available at 50 pcs, 200 pcs, and 500 pcs.

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