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Zeron 100 Screws Manufacturer & Exporter in India

Explore Zeron 100 Screws 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 Zeron 100 Screws?

Zeron 100 screws are high-performance fasteners manufactured from super duplex stainless steel UNS S32760, conforming to ASTM A276 and ASTM A479 standards. This alloy features a balanced austenitic-ferritic microstructure, delivering exceptional resistance to pitting, crevice, and stress corrosion cracking, even in aggressive chloride and sour environments.

With a PREN (Pitting Resistance Equivalent Number) of 40+, Zeron 100 screws are specified for critical bolted joints in offshore, chemical, and desalination applications where standard duplex or 316 stainless steel is inadequate. The alloy’s high strength and corrosion resistance make it ideal for demanding service conditions.

Quick Specifications

MaterialZeron 100 (Super Duplex Stainless Steel)
UNS NumberS32760
DIN Number1.4501
Material StandardASTM A276 / ASTM A479
Screw Standard (Metric)DIN 912 / DIN 7991 / ISO 4762
Screw Standard (Inch)ASME B18.3
Thread FormISO Metric / UNC / UNF
Diameter RangeM6-M64 / ¼"-2½"
Tensile Strength750 MPa (109 ksi) min
Yield Strength570 MPa (83 ksi) min
HardnessMax 28 HRC / 290 HB
? All material certified by NABL-accredited laboratory. PMI and ferrite content verification available on request.

Complete the Fastener Set

Other Zeron 100 Fastener Products Available from RealBolt

RealBolt also manufactures the complete Zeron 100 fastener range from certified super duplex stainless steel bar stock, including Zeron 100 Bolts, Zeron 100 Nuts, Zeron 100 Washers, Zeron 100 Studs, and Zeron 100 Threaded Rods. All Zeron 100 fastener types are produced to ASTM with full EN 10204 MTC 3.1/3.2 documentation.
Zeron 100 Bolts
Zeron 100 Nuts
Zeron 100 Washers
Zeron 100 Studs
Zeron 100 Threaded Rods

Technical Data

Zeron 100 Screws Dimensions, Sizes & Thread Standards

Zeron 100 Screws are available in metric M6–M100 and inch ¼″–4″ as standard. Per DIN 912 (hex socket cap), DIN 7991 (countersunk), ISO 4762. Custom lengths in 5mm increments. Inch dimensions available per ASME B18.3. All Zeron 100 screws dimensions are verified against applicable DIN, ISO, and ASME B18 standards

Socket 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)
M61.0106.0510100
M81.25138.0612120
M101.51610.0816150
M121.751812.01020200
M162.02416.01425250
M202.53020.01730300
M243.03624.01940400
M303.54530.02250500
M364.05436.02760600
M424.56342.03280800
M485.07248.0361001000
M565.58456.0411201200
M646.09664.0461401500

Dimensional & Material Standards

StandardCoversThread
DIN 912Socket cap screwsMetric
DIN 7991Countersunk socket screwsMetric
ISO 4762Hex socket head cap screwsMetric
ASME B18.3Socket cap, button, set screwsUNC/UNF
ISO 14581Socket countersunk screwsMetric
Material StandardRequirement
ASTM A276Bar/rod - UNS S32760
ASTM A479Forged/rolled bar - S32760
NACE MR0175Sour service =28 HRC
EN 10204 3.1Mill test certificate
EN 10204 3.2TPI-witnessed MTC

Material Chemistry

Zeron 100 Chemical Composition

Zeron 100 Screws are manufactured from a high-alloy ferritic-austenitic steel containing chromium (24–26%), molybdenum (3.5–5%), and nitrogen (0.24–0.32%) per ASTM. These precise elemental limits produce PREN ≥ 40 — confirming seawater pitting immunity — and deliver the 550 MPa minimum yield strength required for NORSOK M-630 subsea qualification.

Chemical Composition per ASTM A276 / UNS S32760

ElementComposition (%)
Chromium (Cr)24.0-26.0
Nickel (Ni)6.0-8.0
Molybdenum (Mo)3.0-4.0
Copper (Cu)0.5-1.0
Tungsten (W)0.5-1.0
Nitrogen (N)0.20-0.30
Silicon (Si)1.0 max
Manganese (Mn)1.0 max
Phosphorus (P)0.03 max
Sulphur (S)0.01 max
Carbon (C)0.03 max
Iron (Fe)Balance
? All heats verified by NABL-accredited spectrometry. PMI and ferrite content verification available on request.

Why Zeron 100 Alloy Composition Matters for Screws

High Chromium & Molybdenum — Pitting & Crevice Resistance
The high Cr (24–26%) and Mo (3–4%) content gives Zeron 100 screws a PREN >40, ensuring outstanding resistance to pitting and crevice corrosion in seawater, brine, and chloride-rich chemical environments.
Copper & Tungsten — Acid & Chloride Protection
Copper and tungsten additions enhance resistance to sulphuric acid and chloride-induced corrosion, making Zeron 100 screws suitable for desalination, FGD, and chemical processing plants.
Nitrogen — Strength & SCC Resistance
Nitrogen increases yield strength and improves resistance to stress corrosion cracking, especially under high mechanical loads and elevated temperatures.

Fastener Performance

Zeron 100 Screws Mechanical Properties & Torque Reference

The table below lists mechanical properties and torque reference for Zeron 100 Screws per ASTM. Zeron 100 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)
M8282216
M10564525
M12987836
M1624019265
M20470376102
M24820656147
M3016001280238
M3628002240343
?? Anti-galling: Use molybdenum-based or PTFE anti-seize. Lubricated values assume K=0.16. Avoid copper-based anti-seize in chloride service.

Industry Applications

Zeron 100 Screws Applications — Industries & End Uses

Zeron 100 Screws from RealBolt are specified across subsea oil and gas, FPSOs, desalination, and offshore where very good corrosion resistance and 620 MPa tensile strength are required for reliable fastener performance. Click each industry below for detailed application examples.
Zeron 100 screws are the preferred choice for high-pressure pumps, evaporator vessels, and brine recirculation systems in seawater desalination plants. Their high PREN and resistance to chloride-induced pitting ensure long-term reliability in saline environments.
Socket cap and countersunk screws for structural assemblies, riser clamps, and subsea equipment where resistance to sulphide stress cracking and seawater corrosion is critical. NORSOK and NACE MR0175 compliant for sour service.
Used in heat exchanger channel covers, reactor closures, and agitator assemblies exposed to aggressive acids, chlorides, and mixed chemical streams. Zeron 100 screws outperform 316L and standard duplex in these demanding environments.
Fasteners for autoclaves, leaching tanks, and slurry pumps where abrasion and corrosion from acidic and chloride-rich solutions are severe. Zeron 100’s high strength and corrosion resistance extend equipment life.

Zeron 100 Screws Standards & International Certifications

Zeron 100 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 3.2 (third-party), NACE MR0175/ISO 15156, NORSOK M-630, Charpy impact certificates, and PMI (XRF) reports — available on request for all orders.
Standards
DIN 912 DIN 913 DIN 914 DIN 915 DIN 916 ISO 4762 ISO 10642 ASME B18.3 EN ISO 4762 IS 1367 IS 12427
Certifications
ISO 9001:2015NACE MR0175NABL LabPED 2014/68/EUMTC 3.1 / 3.2

Buy Zeron 100 Screws from India's Leading Manufacturer — Get a Competitive Quote Today

Partner with RealBolt — India’s leading manufacturer of certified Zeron 100 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
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Answers for Buyers

Zeron 100 Screws — Frequently Asked Questions

Browse expert answers to common questions about Zeron 100 Screws from RealBolt — covering PREN ≥ 40, NORSOK M-630, NACE MR0175, ASTM A182 F53/F55, sizes, and EN 10204 3.2 third-party documentation. Contact our technical team directly for project-specific guidance on Zeron 100 screws selection and pricing.
Zeron 100 socket cap screws are available to DIN 912 (metric), ISO 4762, DIN 7991 (countersunk), and ASME B18.3 (inch series). Custom thread forms such as UNC, UNF, and Whitworth can be supplied on request. All screws are manufactured from ASTM A276/A479 S32760 bar with full traceability.
Use a molybdenum-based or PTFE anti-seize compound (such as Molykote 1000 or Loctite LB 8014) to prevent galling and facilitate disassembly. Avoid copper-based anti-seize in chloride or seawater service to prevent galvanic corrosion. Lubricated torque values should be reduced by 15-20% compared to dry assembly.
Yes – Zeron 100 screws have a PREN >40 and are fully resistant to pitting, crevice, and stress corrosion cracking in seawater, brine, and high-chloride process streams. They are specified for desalination, offshore, and marine applications where 316L and standard duplex fail. No special coating is required.
No MOQ for standard sizes (M8-M24) held in stock – we supply from single pieces for urgent maintenance. Custom sizes or non-standard threads have an MOQ of 10 kg. Large project quantities receive 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