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SS 310 / 310S Threaded Rods Manufacturer & Exporter in India

Explore SS 310 / 310S 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 310 / 310S Threaded Rods?

SS 310 / 310S threaded rods are high-temperature austenitic stainless steel fasteners manufactured from UNS S31000 (310) or UNS S31008 (310S) bar stock, conforming to ASTM A276 and ASTM A479. These rods feature a fully threaded profile and are designed for bolted connections in environments requiring exceptional oxidation resistance up to 1100°C.

The high chromium (24-26%) and nickel (19-22%) content provides outstanding resistance to scaling, sulfidation, and carburization, making SS 310 / 310S threaded rods the preferred choice for furnace, heat treatment, and petrochemical plant applications. The low-carbon 310S variant minimizes carbide precipitation, ensuring superior weldability and resistance to sensitization.

Quick Specifications

MaterialStainless Steel 310 / 310S
UNS NumberS31000 / S31008
DIN Number1.4841 / 1.4845
Material StandardASTM A276 / ASTM A479
Threaded Rod StandardDIN 975 / DIN 976 / ISO 898-1
Thread FormISO Metric / UNC / UNF
Diameter RangeM6-M64 / ¼"-2½"
Tensile Strength515 MPa (75 ksi) min
Yield Strength205 MPa (30 ksi) min
HardnessMax 217 HB
? All material certified by NABL-accredited laboratory. PMI and IGC test available on request.

Complete the Fastener Set

Other SS 310 / 310S Fastener Products Available from RealBolt

RealBolt also manufactures the complete SS 310 / 310S fastener range — SS 310 / 310S Bolts, SS 310 / 310S Nuts, SS 310 / 310S Screws, SS 310 / 310S Washers, SS 310 / 310S Studs — from certified bar stock per ASTM with full EN 10204 MTC 3.1/3.2 documentation and fast Mumbai dispatch.
SS 310 / 310S Bolts
SS 310 / 310S Nuts
SS 310 / 310S Screws
SS 310 / 310S Washers
SS 310 / 310S Studs

Technical Data

SS 310 / 310S Threaded Rods Dimensions, Sizes & Thread Standards

SS 310 / 310S Threaded Rods are available in metric M6–M100 and inch ¼″–4″ as standard. Per DIN 975 (fully threaded rods) and DIN 976 (stud bolts). Custom lengths up to 6 meters. Inch sizes available per ASTM F593 and ASME B18.31.3.

Threaded Rod Dimensions - Metric (DIN 975)

Size (M)Pitch (mm)Rod Diameter (mm)Standard Length (mm)Max Length (mm)
M61.06.010006000
M81.258.010006000
M101.510.010006000
M121.7512.010006000
M162.016.010006000
M202.520.010006000
M243.024.010006000
M303.530.010006000
M364.036.010006000
M424.542.010006000
M485.048.010006000
M565.556.010006000
M646.064.010006000

Dimensional & Material Standards

StandardCoversThread
DIN 975Fully threaded rodsMetric
DIN 976Stud boltsMetric
ASME B18.31.3Threaded rods (inch)UNC/UNF
ISO 898-1Mechanical propertiesMetric
ASTM F593Stainless steel rodsUNC/UNF
Material StandardRequirement
ASTM A276Bar/rod - UNS S31000/S31008
ASTM A479Pressure vessel rod
EN 10204 3.1Mill test certificate
EN 10204 3.2TPI-witnessed MTC

Material Chemistry

SS 310 / 310S Chemical Composition

SS 310 / 310S 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 / A479

Element310 (%)310S (%)
Chromium (Cr)24.0-26.024.0-26.0
Nickel (Ni)19.0-22.019.0-22.0
Carbon (C)0.25 max0.08 max
Manganese (Mn)2.00 max2.00 max
Silicon (Si)1.50 max1.50 max
Phosphorus (P)0.045 max0.045 max
Sulfur (S)0.030 max0.030 max
Iron (Fe)BalanceBalance
? All heats verified by NABL-accredited spectrometry. PMI and IGC test available on request.

Why SS 310 / 310S Alloy Composition Matters for Threaded Rods

High Cr/Ni — Oxidation & Scaling Resistance
The elevated chromium and nickel content in SS 310 / 310S provides outstanding resistance to oxidation and scaling at temperatures up to 1100°C, making these rods ideal for furnace and heat treatment fixtures.
Low Carbon (310S) — Weldability & Sensitization Resistance
310S’s low carbon content minimizes carbide precipitation during welding, reducing the risk of intergranular corrosion and ensuring long service life in welded assemblies.
Austenitic Structure — Ductility & Toughness
The fully austenitic microstructure ensures excellent ductility and toughness, even at cryogenic temperatures, and prevents embrittlement during thermal cycling.

Fastener Performance

SS 310 / 310S Threaded Rods Mechanical Properties & Torque Reference

The table below lists mechanical properties and torque reference for SS 310 / 310S Threaded Rods per ASTM. SS 310 / 310S 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
M4233002640370
M4848003840480
?? Anti-galling: Use molybdenum-based anti-seize (Molykote 1000). Lubricated values assume K=0.16. Avoid copper-based anti-seize in high-temperature service.

Industry Applications

SS 310 / 310S Threaded Rods Applications — Industries & End Uses

SS 310 / 310S 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 310 / 310S threaded rods are the industry standard for securing refractory anchors, radiant tube supports, and structural assemblies inside continuous and batch furnaces. Their high-temperature strength and oxidation resistance ensure long service life in direct flame and hot gas environments.
Used for bolting in reformer tube supports, catalyst baskets, and process heater assemblies, SS 310 / 310S threaded rods withstand carburizing and sulfidizing atmospheres in hydrogen, ammonia, and ethylene production units.
Threaded rods for boiler internals, superheater supports, and incinerator grates where resistance to scaling and thermal cycling is critical. 310S is preferred for welded assemblies due to its low carbon content.
SS 310 / 310S rods are specified for kiln shell anchors, glass lehr supports, and hot zone structural connections exposed to high radiant heat and corrosive dusts.

SS 310 / 310S Threaded Rods Standards & International Certifications

SS 310 / 310S 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 LabEN 10204 3.1 / 3.2

Buy SS 310 / 310S Threaded Rods from India's Leading Manufacturer — Get a Competitive Quote Today

Partner with RealBolt — India’s leading manufacturer of certified SS 310 / 310S 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 310 / 310S Threaded Rods — Frequently Asked Questions

Browse expert answers to common questions about SS 310 / 310S 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 310 / 310S threaded rods selection and pricing.
SS 310 / 310S threaded rods are supplied to DIN 975 (fully threaded rods), DIN 976 (stud bolts), ISO 898-1 (mechanical properties), and ASME B18.31.3 (inch series). ASTM F593 covers inch-threaded rods for general service. Custom thread forms (BSW, BSF, Whitworth) are available on request.
Use a molybdenum-based anti-seize compound (such as Molykote 1000 or Loctite LB 8012) for high-temperature bolting. Avoid copper-based anti-seize in oxidizing atmospheres above 500°C. Apply to threads and nut faces to prevent galling and facilitate disassembly after thermal cycling.
Yes – SS 310 / 310S threaded rods are engineered for continuous operation in furnace atmospheres up to 1100°C. Their high chromium and nickel content resists scaling, oxidation, and carburization, making them ideal for securing fixtures, supports, and refractory anchors in heat treatment and annealing furnaces.
No formal MOQ for standard diameters (M10-M36) held in stock – we supply from single rods for urgent maintenance. Custom diameters or cut lengths may require a 10 kg minimum. Price breaks are available at 25, 100, and 500 rods.

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