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SS 410 / 416 Nuts Manufacturer & Exporter in India

Explore SS 410 / 416 Nuts 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 410 / 416 Nuts?

SS 410 / 416 nuts are high-strength, martensitic stainless steel fasteners manufactured from ASTM A276/A479 bar stock in grades 410 and 416. These grades are known for their excellent mechanical properties, moderate corrosion resistance, and superior machinability (especially 416). SS 410 nuts are widely used for their hardness and wear resistance, while SS 416 nuts are preferred where high-speed machining and tight tolerances are required.

Both grades are magnetic and can be heat treated to achieve high tensile strength, making them suitable for demanding bolted joints in pumps, valves, and general engineering applications. SS 410 / 416 nuts are commonly specified for use in mildly corrosive environments, such as water, steam, and some chemicals, where austenitic stainless steels may be over-specified.

Quick Specifications

MaterialStainless Steel 410 / 416
UNS NumberS41000 / S41600
DIN Number1.4006 / 1.4005
Material StandardASTM A276 / ASTM A479
Nut Standard (Metric)DIN 934 / ISO 4032
Nut Standard (Inch)ASME B18.2.2
Thread FormISO Metric / UNC / UNF
Diameter RangeM6-M64 / ¼"-2½"
Tensile Strength700-950 MPa (min, heat treated)
Yield Strength450-650 MPa (min, heat treated)
HardnessMax 32 HRC (410) / 28 HRC (416)
? All material certified by NABL-accredited laboratory. PMI and hardness survey available on request.

Complete the Fastener Set

Other SS 410 / 416 Fastener Products Available from RealBolt

RealBolt also manufactures the complete SS 410 / 416 fastener range — SS 410 / 416 Bolts, SS 410 / 416 Screws, SS 410 / 416 Washers, SS 410 / 416 Studs, SS 410 / 416 Threaded Rods — from certified bar stock per ASTM with full EN 10204 MTC 3.1/3.2 documentation and fast Mumbai dispatch.
SS 410 / 416 Bolts
SS 410 / 416 Screws
SS 410 / 416 Washers
SS 410 / 416 Studs
SS 410 / 416 Threaded Rods

Technical Data

SS 410 / 416 Nuts Dimensions, Sizes & Thread Standards

SS 410 / 416 Nuts are available in metric M6–M100 and inch ¼″–4″ as standard. Per DIN 934 (hex nut) / ISO 4032. Custom thread forms and special dimensions available on request. Inch sizes per ASME B18.2.2. All SS 410 / 416 nuts dimensions are verified against applicable DIN, ISO,

Hex Nut Dimensions - Metric (DIN 934 / ISO 4032)

Size (M)Pitch (mm)A/F (mm)Height (mm)
M61.0105
M81.25136.5
M101.5178
M121.751910
M162.02413
M202.53016
M243.03619
M303.54624
M364.05529
M424.56534
M485.07538
M565.58545
M646.09551

Dimensional & Material Standards

StandardCoversThread
DIN 934Hex nutsMetric
ISO 4032Hex nutsMetric
ASME B18.2.2Hex & heavy hex nutsUNC/UNF
DIN 439Thin hex nutsMetric
ISO 4035Thin hex nutsMetric
Material StandardRequirement
ASTM A276Bar/rod - SS 410/416
ASTM A479Pressure vessel quality
EN 10204 3.1Mill test certificate
EN 10204 3.2TPI-witnessed MTC

Material Chemistry

SS 410 / 416 Chemical Composition

SS 410 / 416 Nuts 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

ElementSS 410 (%)SS 416 (%)
Chromium (Cr)11.5-13.512.0-14.0
Nickel (Ni)0.75 max0.60 max
Carbon (C)0.15 max0.15 max
Manganese (Mn)1.0 max1.25 max
Silicon (Si)1.0 max1.0 max
Sulfur (S)0.03 max0.15 min
Phosphorus (P)0.04 max0.06 max
Iron (Fe)BalanceBalance
? All heats verified by NABL-accredited spectrometry. PMI available on request.

Why SS 410 / 416 Alloy Composition Matters for Nuts

Cr (11.5–14%) — Corrosion & Oxidation Resistance
Chromium content provides a passive oxide layer, giving SS 410 / 416 nuts moderate resistance to atmospheric corrosion, steam, and mild chemicals. Suitable for water, oil, and non-chloride process environments.
S (0.15% min in 416) — Superior Machinability
SS 416 is the most machinable stainless steel due to its high sulfur content, enabling high-speed CNC production of precision nuts with excellent thread finish and tight tolerances.
Martensitic Structure — High Strength & Hardness
Both grades can be heat treated to achieve high tensile strength and hardness, making them ideal for bolted joints subject to wear, vibration, or moderate impact.

Fastener Performance

SS 410 / 416 Nuts Mechanical Properties & Torque Reference

The table below lists mechanical properties and torque reference for SS 410 / 416 Nuts per ASTM. SS 410 / 416 nuts achieve 620 MPa tensile strength, with hardness, yield, and elongation values verified by NABL-accredited testing and reported in the EN 10204 MTC.

Nut SizeRecommended Torque (Nm)Proof Load (kN)
M82818
M105629
M129842
M1624083
M20470130
M24820190
M301600310
M362800450
?? Anti-galling: Use molybdenum-based or PTFE anti-seize. Avoid dry assembly for martensitic stainless nuts to prevent thread galling.

Industry Applications

SS 410 / 416 Nuts Applications — Industries & End Uses

SS 410 / 416 Nuts 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 410 / 416 nuts are widely used in pump casings, valve bonnets, and gland assemblies for water, steam, and non-chloride process fluids. Their hardness and moderate corrosion resistance make them ideal for sealing and pressure-retaining joints.
Hex nuts and lock nuts for machine frames, gearboxes, and rotating equipment where high strength and wear resistance are required, but exposure to aggressive chemicals is limited.
SS 410 / 416 nuts are used in food machinery, bottling lines, and conveyors where moderate corrosion resistance and easy cleaning are needed, but not continuous exposure to chlorides or acids.
Used in brake assemblies, suspension joints, and rail fastenings where vibration resistance and mechanical strength are critical. SS 416 nuts are preferred for high-volume, precision-machined automotive components.

SS 410 / 416 Nuts Standards & International Certifications

SS 410 / 416 Nuts 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 934 ISO 4032 ASME B18.2.2 EN ISO 4032 IS 1364 IS 1367
Certifications
ISO 9001:2015PED 2014/68/EUNABL LabMTC 3.1 / 3.2

Buy SS 410 / 416 Nuts from India's Leading Manufacturer — Get a Competitive Quote Today

Partner with RealBolt — India’s leading manufacturer of certified SS 410 / 416 Nuts — 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 410 / 416 Nuts — Frequently Asked Questions

Browse expert answers to common questions about SS 410 / 416 Nuts 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 410 / 416 nuts selection and pricing.
SS 410 / 416 hex nuts are available to DIN 934 (metric), ISO 4032, ASME B18.2.2 (inch hex and heavy hex), and DIN 439/ISO 4035 (thin nuts). Custom thread forms such as UNC, UNF, BSW, and BSF can be supplied on request. Special lock nuts and slotted nuts are also available for critical applications.
Yes – it is strongly recommended to use a molybdenum-based or PTFE anti-seize compound on threads and bearing surfaces to prevent galling, especially during repeated tightening. Avoid dry assembly, as martensitic stainless steels are prone to thread seizure under load.
No – SS 410 / 416 nuts are not recommended for continuous exposure to seawater, brine, or chloride-rich chemicals, as they are susceptible to pitting and crevice corrosion. For marine or aggressive chemical service, use SS 316 or duplex stainless nuts.
Standard sizes (M8-M36) are available ex-stock with no formal MOQ – single-piece orders for urgent maintenance are accepted. Custom sizes or special thread forms may require a 10 kg minimum batch. Quantity discounts apply 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