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SS 904L Threaded Rods Manufacturer & Exporter in India

Explore SS 904L 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 904L Threaded Rods?

SS 904L threaded rods are high-alloy austenitic stainless steel fasteners manufactured from UNS N08904 bar stock, conforming to ASTM B649 and ASTM A276. Designed for superior corrosion resistance, especially in aggressive environments containing sulphuric, phosphoric, and acetic acids, these rods offer excellent resistance to pitting, crevice corrosion, and stress corrosion cracking due to their high nickel (23-28%) and molybdenum (4-5%) content.

SS 904L threaded rods are widely specified for chemical processing, marine, and pollution control applications where standard 316L or 317L stainless steel is inadequate. All rods are supplied with full traceability and EN 10204 3.1 certification.

Quick Specifications

MaterialStainless Steel 904L
UNS NumberN08904
DIN Number1.4539
Material StandardASTM B649 / ASTM A276
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 Strength490 MPa (71 ksi) min
Yield Strength220 MPa (32 ksi) min
HardnessMax 90 HRB / 220 HB
? All material certified by NABL-accredited laboratory. PMI and IGC test available on request.

Complete the Fastener Set

Other SS 904L Fastener Products Available from RealBolt

RealBolt also manufactures the complete SS 904L fastener range from certified stainless steel bar stock, including SS 904L Bolts, SS 904L Nuts, SS 904L Screws, SS 904L Washers, and SS 904L Studs. All SS 904L fastener types are produced to ASTM with full EN 10204 MTC 3.1/3.2 documentation.
SS 904L Bolts
SS 904L Nuts
SS 904L Screws
SS 904L Washers
SS 904L Studs

Technical Data

SS 904L Threaded Rods Dimensions, Sizes & Thread Standards

SS 904L 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 3 meters. Inch and metric threads available. All SS 904L threaded rods dimensions are verified against applicable DIN, ISO, and

Threaded Rod Dimensions - Metric (DIN 975)

Size (M)Pitch (mm)Rod Dia (mm)Standard Length (mm)Custom Length (mm)
M61.06.01000Up to 3000
M81.258.01000Up to 3000
M101.510.01000Up to 3000
M121.7512.01000Up to 3000
M162.016.01000Up to 3000
M202.520.01000Up to 3000
M243.024.01000Up to 3000
M303.530.01000Up to 3000
M364.036.01000Up to 3000
M424.542.01000Up to 3000
M485.048.01000Up to 3000
M565.556.01000Up to 3000
M646.064.01000Up to 3000

Dimensional & Material Standards

StandardCoversThread
DIN 975Threaded rods, full threadMetric
DIN 976Stud bolts, double endMetric
ASME B18.31.3Threaded rodsUNC/UNF
ISO 898-1Mechanical propertiesMetric
Material StandardRequirement
ASTM B649Bar/rod - UNS N08904
ASTM A276Stainless steel bar
ASTM A479Pressure vessel quality
EN 10204 3.1Mill test certificate
EN 10204 3.2TPI-witnessed MTC

Material Chemistry

SS 904L Chemical Composition

SS 904L 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 B649

ElementComposition (%)
Chromium (Cr)19.0-23.0
Nickel (Ni)23.0-28.0
Molybdenum (Mo)4.0-5.0
Copper (Cu)1.0-2.0
Carbon (C)0.02 max
Manganese (Mn)2.0 max
Silicon (Si)1.0 max
Phosphorus (P)0.045 max
Sulphur (S)0.035 max
Iron (Fe)Balance
? All heats verified by NABL-accredited spectrometry. PMI and IGC test available on request.

Why SS 904L Alloy Composition Matters for Threaded Rods

High Nickel & Molybdenum — Acid Resistance
The elevated nickel (23–28%) and molybdenum (4–5%) content in SS 904L provides exceptional resistance to reducing acids, especially sulphuric acid, making these rods ideal for chemical plant and fertilizer applications.
Copper Addition — Chloride & Acid Protection
Copper (1–2%) enhances resistance to sulphuric and phosphoric acids and improves performance in chloride-rich environments, reducing the risk of pitting and crevice corrosion in marine and process plant settings.
Ultra-Low Carbon — No Sensitization
With a maximum carbon content of 0.02%, SS 904L threaded rods are immune to intergranular corrosion after welding, ensuring long-term reliability in welded assemblies and high-temperature service.

Fastener Performance

SS 904L Threaded Rods Mechanical Properties & Torque Reference

The table below lists mechanical properties and torque reference for SS 904L Threaded Rods per ASTM. SS 904L 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)
M12705625
M1617013650
M2034027280
M24590472120
M301200960190
M3621001680275
M4232002560370
M4847003760480
?? Anti-galling: Use molybdenum-based or PTFE anti-seize. Lubricated values assume K=0.16. Avoid copper-based anti-seize in chloride-rich environments.

Industry Applications

SS 904L Threaded Rods Applications — Industries & End Uses

SS 904L 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 904L threaded rods are widely used for equipment assembly, pipe supports, and structural connections in sulphuric acid, phosphoric acid, and urea plants. Their high resistance to reducing acids and chloride stress corrosion cracking makes them the preferred choice for acid storage tanks, reactors, and fertilizer production lines.
These rods are specified for seawater intake structures, desalination plant piping supports, and marine construction where resistance to pitting, crevice corrosion, and biofouling is critical. SS 904L’s copper content enhances performance in brine and saltwater environments.
Used for digesters, bleach towers, and chemical recovery systems, SS 904L threaded rods withstand aggressive bleaching chemicals and high chloride concentrations, ensuring long service life in pulp and paper processing plants.
SS 904L threaded rods are chosen for refinery heat exchangers, offshore platform supports, and process piping where high chloride and acidic conditions exist. Their immunity to stress corrosion cracking ensures reliability in critical bolted joints.

SS 904L Threaded Rods Standards & International Certifications

SS 904L 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, IS 12427 compliance, ISO 3506 material 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 IS 12427
Certifications
ISO 9001:2015PED 2014/68/EUNABL LabMTC 3.1 / 3.2

Buy SS 904L Threaded Rods from India's Leading Manufacturer — Get a Competitive Quote Today

Partner with RealBolt — India’s leading manufacturer of certified SS 904L 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 904L Threaded Rods — Frequently Asked Questions

Browse expert answers to common questions about SS 904L 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 904L threaded rods selection and pricing.
SS 904L threaded rods are available to DIN 975 (full thread, metric), DIN 976 (studs), and ASME B18.31.3 (inch UNC/UNF). Custom thread forms such as BSW, BSF, and ACME can be supplied on request. Metric coarse and fine pitches are available up to M64, and inch sizes up to 2½”.
Use a molybdenum-based or PTFE anti-seize compound to prevent galling and facilitate disassembly. Avoid copper-based anti-seize in chloride-rich or marine environments to prevent galvanic corrosion. Apply to threads and nut faces for best results.
Yes – SS 904L offers excellent resistance to pitting, crevice corrosion, and chloride-induced stress corrosion cracking in seawater and brine. The copper addition further enhances performance in saline and brackish water, making these rods ideal for marine and desalination applications.
No MOQ for standard sizes (M10-M36) available ex-stock. Custom diameters or cut lengths have a minimum order of 10 kg. Large project quantities receive tiered pricing at 50, 200, and 500 pieces. Sample orders for testing are accepted.

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