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SS 410 / 416 Bolts Manufacturer & Exporter in India

Explore SS 410 / 416 Bolts 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 Bolts?

SS 410 / 416 bolts are martensitic stainless steel fasteners manufactured from ASTM A276/A479 bar stock, primarily UNS S41000 (SS 410) and UNS S41600 (SS 416). These alloys are known for their high strength, moderate corrosion resistance, and excellent machinability. SS 410 bolts are heat-treatable to high hardness, while SS 416 bolts offer superior machinability due to their higher sulfur content.

Both grades are magnetic and are widely specified for applications requiring wear resistance, moderate corrosion protection, and reliable mechanical performance. SS 410 / 416 bolts are commonly used in pump assemblies, valve bodies, and general engineering where stainless steel is required but extreme corrosion resistance is not critical.

Quick Specifications

MaterialSS 410 / SS 416
UNS NumberS41000 / S41600
DIN Number1.4006 / 1.4005
Material StandardASTM A276 / ASTM A479
Bolt Standard (Metric)DIN 931 / DIN 933 / ISO 4014
Bolt Standard (Inch)ASME B18.2.1
Thread FormISO Metric / UNC / UNF
Diameter RangeM6-M64 / ¼"-2½"
Tensile Strength700-950 MPa (annealed to hardened)
Yield Strength450-700 MPa
HardnessMax 35 HRC (SS 410), Max 32 HRC (SS 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 Nuts, 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 Nuts
SS 410 / 416 Screws
SS 410 / 416 Washers
SS 410 / 416 Studs
SS 410 / 416 Threaded Rods

Technical Data

SS 410 / 416 Bolts Dimensions, Sizes & Thread Standards

SS 410 / 416 Bolts are available in metric M6–M100 and inch ¼″–4″ as standard. Per DIN 931 (partial thread) / DIN 933 (full thread) / ISO 4014. Custom lengths in 5mm increments. Inch dimensions available per ASME B18.2.1. All SS 410 / 416 bolts dimensions conform to applicable DIN, ISO, and ASME B18 standards.

Hex Bolt Dimensions - Metric (DIN 931 / ISO 4014)

Size (M)Pitch (mm)A/F (mm)Head Ht (mm)Min L (mm)Max L (mm)
M61.0104.010200
M81.25135.312250
M101.5176.416300
M121.75197.520400
M162.02410.025500
M202.53012.530600
M243.03615.040600
M303.54618.750800
M364.05522.5601000
M424.56526.0801000
M485.07530.01001200
M565.58535.01201500
M646.09540.01402000

Dimensional & Material Standards

StandardCoversThread
DIN 931Hex bolts, partial threadMetric
DIN 933Hex bolts, full threadMetric
ISO 4014Hex head screws, partialMetric
ISO 4017Hex head screws, fullMetric
ASME B18.2.1Hex & heavy hex boltsUNC/UNF
ASME B16.5Stud bolts for flangesUNC
Material StandardRequirement
ASTM A276Bar/rod - SS 410 / SS 416
ASTM A479Pressure vessel quality
ASTM F593Fastener mechanical
EN 10204 3.1Mill test certificate
EN 10204 3.2TPI-witnessed MTC

Material Chemistry

SS 410 / 416 Chemical Composition

SS 410 / 416 Bolts 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)1.00 max1.25 max
Silicon (Si)1.00 max1.00 max
Phosphorus (P)0.04 max0.06 max
Sulfur (S)0.03 max0.15 min
Iron (Fe)BalanceBalance
? All heats verified by NABL-accredited spectrometry. PMI available on request.

Why SS 410 / 416 Alloy Composition Matters for Bolts

Cr (11.5–14%) — Corrosion & Oxidation Resistance
Chromium content provides a passive oxide layer, giving SS 410 / 416 bolts moderate resistance to atmospheric and mild chemical corrosion, suitable for pump, valve, and general engineering use.
S (0.15% min in SS 416) — Machinability
SS 416’s high sulfur content dramatically improves machinability, making it ideal for precision-turned bolts and fasteners with tight tolerances or complex geometries.
Martensitic Structure — Heat Treatable Strength
Both SS 410 and SS 416 can be hardened by heat treatment, enabling high tensile and yield strengths for demanding mechanical applications.

Fastener Performance

SS 410 / 416 Bolts Mechanical Properties & Torque Reference

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

Bolt SizeDry (Nm)Lubricated (Nm)Clamp Load (kN)
M12806430
M1618014460
M2035028095
M24600480140
M301200960225
M3621001680325
M4232002560450
M4847003760600
?? Anti-galling: Use molybdenum-based anti-seize (Molykote 1000). Lubricated values assume K=0.16. Avoid over-tightening to prevent thread galling in stainless steels.

Industry Applications

SS 410 / 416 Bolts Applications — Industries & End Uses

SS 410 / 416 Bolts 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 bolts are widely used for assembling pump casings, valve bodies, and impellers in water treatment, irrigation, and light chemical service. Their moderate corrosion resistance and high strength make them ideal for non-critical wetted connections.
Used in machine frames, gearboxes, and structural assemblies where high strength and wear resistance are required, but exposure to aggressive chemicals is limited. SS 416 bolts are preferred for CNC-turned fasteners due to their machinability.
Fasteners for food-grade conveyors, mixers, and packaging machinery where moderate corrosion resistance and easy cleaning are needed. SS 410 bolts are suitable for dry or mildly wet environments.
SS 410 / 416 bolts are specified for brake assemblies, chassis components, and railcar hardware where strength, magnetic response, and moderate corrosion resistance are required.

SS 410 / 416 Bolts Standards & International Certifications

SS 410 / 416 Bolts 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 931 DIN 933 ISO 4014 ISO 4017 ASME B18.2.1 EN ISO 4014 EN ISO 4017 IS 1364 IS 1367
Certifications
ISO 9001:2015PED 2014/68/EUNABL LabMTC 3.1 / 3.2

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

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

Browse expert answers to common questions about SS 410 / 416 Bolts 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 bolts selection and pricing.
SS 410 / 416 bolts are available to DIN 931 (partial thread), DIN 933 (full thread), ISO 4014/4017, and ASME B18.2.1 (inch hex and heavy hex). Stud bolts for flanges are supplied per ASME B16.5. Custom thread forms (BSW, BSF, Whitworth) can be manufactured on request with a typical lead time of 10-15 working days.
Molybdenum-based anti-seize (such as Molykote 1000 or Loctite LB 8012) is recommended for SS 410 / 416 bolts to prevent galling and seizing during assembly. Apply to threads and bearing surfaces. Avoid copper-based anti-seize to prevent galvanic corrosion with stainless steel.
No – SS 410 / 416 bolts are not recommended for marine or high-chloride environments as they are susceptible to pitting and crevice corrosion. For such applications, use SS 316 or duplex stainless steel bolts. SS 410 / 416 are best for dry or mildly corrosive conditions.
No formal MOQ for standard sizes (M8-M36) held ex-stock – we supply from single pieces for urgent maintenance. Custom sizes or non-standard threads may require a 10 kg minimum. 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