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Carbon Steel Fasteners

Carbon Steel Fasteners Manufacturer Supplier Exporter India
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Carbon Steel Fasteners Manufacturer in India | Bolts, Nuts, Washers & Screws Supplier

STAINLESS INDIA is a prominent manufacturer, stockist, and exporter of Carbon Steel Fasteners, providing a comprehensive selection of Bolts, Nuts, Screws, Washers, Stud Bolts, Threaded Rods, Rivets, Anchor Fasteners, and customized industrial fasteners.

Our Carbon Steel Fasteners are designed for exceptional strength, durability, and outstanding load-bearing capabilities, making them ideal for structural, mechanical, and heavy-duty applications.
Produced in accordance with ASTM, ASME, DIN, ISO, BS & JIS standards, our fasteners are extensively utilized in the oil & gas, construction, automotive, petrochemical, and engineering sectors.

Product Range

Types of Carbon Steel Fasteners We Manufacture

Bolts

Hex Bolts, Heavy Hex Bolts, Anchor Bolts, U-Bolts, J-Bolts, Eye Bolts

Nuts

Hex Nuts, Lock Nuts, Heavy Hex Nuts, Flange Nuts, Coupling Nuts

Screws

Machine Screws, Self-Tapping Screws, Socket Head Cap Screws

Washers

Plain Washers, Spring Washers, Flat & Lock Washers

Studs & Threaded Rods

Fully Threaded Studs, Double End Studs, Threaded Bars

Custom Fasteners

Non-standard shapes, special materials, CNC machined fasteners

Technical Data

Grades & Specifications

Standard / Grade Description
IS Standards IS 1363 / 1367, IS 2062
High Tensile Grades Grade 8.8 / 10.9 / 12.9
ASTM Structural ASTM A307, ASTM A325
Specialty ASTM ASTM A350 LF2 (Low Temp), ASTM A105 (Forged)
Manufacturing Standards
  • ASTM A307 / A325 / A490
  • ASTM A193 / A194
  • DIN, ISO, JIS, BS Standards
  • ASME/ANSI B18.2.1 & B18.2.2
Available Coatings
Black Phosphate HDG (Hot Dip Galvanized) Zinc Plated PTFE / Teflon Cadmium
Industries Served

Applications of Carbon Steel Fasteners

Oil & Gas Pipelines
Structural & Construction
Automotive & Heavy Machinery
Petrochemical & Refinery
Power Plants & Boilers
Shipbuilding & Marine
Engineering & Fabrication

Carbon Steel Fasteners – Complete Technical Guide

Carbon Steel Fasteners are widely used in industrial piping systems, structural fabrication, pressure vessels, bridges, power plants, refineries, petrochemical facilities, cement plants, offshore platforms and heavy engineering projects because of their excellent tensile strength, durability and cost effectiveness.

At Stainless India, we manufacture and supply Carbon Steel Bolts, Nuts, Washers, Stud Bolts, Threaded Rods, Anchor Bolts and custom-engineered fasteners in accordance with ASTM, ASME, DIN, ISO and BS standards. Products are available in metric as well as imperial dimensions with multiple surface finishes including Black, Zinc Plated, Hot Dip Galvanized, PTFE Coated and Cadmium Plated.

Major Features

  • High tensile strength
  • Excellent load carrying capacity
  • Available in ASTM A307, ASTM A325 and ASTM A193 B7 grades
  • Excellent dimensional accuracy
  • Long service life
  • Available with EN 10204 3.1 Mill Test Certificate
  • Suitable for high pressure applications
  • Available in customized sizes

Industries Served

Carbon Steel Fasteners supplied by Stainless India are extensively used in Oil & Gas, Petrochemical, Chemical Processing, Power Generation, Boiler Manufacturing, Marine, Shipbuilding, Water Treatment, Infrastructure, Steel Plants, Sugar Plants, Mining, Cement Plants, Paper Industry, Defence Projects, Railways and EPC Projects across India and international markets.

Inspection & Testing

Every shipment is inspected for dimensional accuracy, thread profile, hardness, mechanical properties, surface finish, heat number traceability, chemical composition, visual inspection and packaging quality before dispatch. Third Party Inspection from TUV, BV, DNV, SGS and Lloyd's can also be arranged.

Why Choose Carbon Steel Fasteners?

Carbon Steel Fasteners are widely selected for industrial and structural applications because they provide an excellent balance of strength, durability, availability, and cost. They are suitable for projects requiring dependable mechanical performance under static and dynamic loads.

Feature Benefit
High Mechanical Strength Suitable for heavy-duty industrial applications.
Wide Grade Availability Available in ASTM A307, ASTM A325, ASTM A193 B7 and other international standards.
Multiple Surface Finishes Black, Zinc Plated, Hot Dip Galvanized, PTFE and other protective coatings.
Excellent Machinability Can be manufactured in standard and custom dimensions.
International Standards Manufactured according to ASTM, ASME, DIN, ISO, BS and JIS specifications.
Project Documentation Available with EN 10204 3.1 Mill Test Certificate and third-party inspection when requested.

Available Product Range

  • Carbon Steel Hex Bolts
  • Heavy Hex Bolts
  • Hex Nuts
  • Lock Nuts
  • Stud Bolts
  • Threaded Rods
  • Anchor Bolts
  • Machine Screws
  • Socket Head Cap Screws
  • Plain Washers
  • Spring Washers
  • Custom Engineered Fasteners

Quality Assurance, Testing & Global Supply

Stainless India follows strict quality control procedures throughout the manufacturing and supply process. Every batch of Carbon Steel Fasteners is verified for dimensional accuracy, thread quality, mechanical properties and material traceability before dispatch. Our quality system helps ensure consistent product performance for industrial and infrastructure projects worldwide.

Quality Checks

  • Raw material verification
  • Dimensional inspection
  • Thread gauge inspection
  • Visual inspection
  • Mechanical property verification
  • Hardness testing (where applicable)
  • Heat number traceability
  • Final packaging inspection

Documents Supplied

  • EN 10204 3.1 Mill Test Certificate
  • Material Test Report (MTR)
  • Inspection Report
  • Packing List
  • Commercial Invoice
  • Certificate of Origin (when required)
  • Third-Party Inspection (TUV, BV, DNV, SGS, Lloyd's on request)

Export & Project Supply

We supply Carbon Steel Fasteners for EPC contractors, refineries, power plants, petrochemical facilities, marine projects, infrastructure developments and OEM manufacturers. Our export team supports bulk orders with secure packaging, complete documentation and timely worldwide delivery.

Related Carbon Steel Products

Explore our complete range of carbon steel piping products manufactured and supplied for industrial, structural, power generation, petrochemical and EPC applications. These related products are manufactured to international ASTM, ASME and ISO standards and are available with complete material test certification.

Carbon Steel Pipes

Seamless and welded carbon steel pipes for industrial and process applications.

View Carbon Steel Pipes →

Carbon Steel Flanges

Slip On, Weld Neck, Blind, Socket Weld and Threaded Flanges.

View Carbon Steel Flanges →

Carbon Steel Butt Weld Fittings

Elbows, Tees, Reducers, Caps and Pipe Bends manufactured to ASME B16.9.

View Butt Weld Fittings →

Carbon Steel Forged Fittings

Socket Weld and Threaded Forged Fittings manufactured to ASME B16.11.

View Forged Fittings →

Carbon Steel Plates

Industrial quality carbon steel plates available in multiple grades and thicknesses.

View Plates →

Carbon Steel Round Bars

Hot rolled, bright and forged carbon steel round bars for engineering applications.

View Round Bars →

How to Select the Right Carbon Steel Fasteners

Selecting the correct carbon steel fastener depends on the application, operating environment, required strength, coating, and industry standards. Choosing the appropriate fastener improves safety, service life, and overall project reliability.

Selection Factor Recommendation
Application Select bolts, nuts, studs or threaded rods according to the equipment or structural requirement.
Material Grade Choose ASTM A307, ASTM A325, ASTM A193 B7 or other suitable grades based on design requirements.
Corrosion Protection Use Zinc Plated, Hot Dip Galvanized or PTFE coated fasteners where corrosion resistance is required.
Operating Temperature Select grades suitable for high-temperature or low-temperature service conditions.
Certification Request EN 10204 3.1 Mill Test Certificate and third-party inspection for critical projects.

Packaging & Delivery

Carbon Steel Fasteners are supplied in export-quality packaging designed to prevent damage during storage and transportation. We provide secure packing, product identification, heat number traceability, and complete shipping documentation for domestic and international deliveries.

Custom Manufacturing

In addition to standard sizes, Stainless India manufactures custom fasteners according to customer drawings, specifications, thread requirements, dimensions, coatings, and project-specific standards for industrial applications worldwide.

Our Advantage

Why Choose STAINLESS INDIA for CS Fasteners?

Market Leader

Prominent manufacturer of CS fasteners in India.

Advanced Mfg

State-of-the-art CNC and forging production line.

Large Inventory

Large inventory with prompt delivery.

Fully Certified

Certified by ISO and IBR.

Global Presence

Exports to over 40 countries worldwide.

Tailored Solutions

Tailored threading, coating, and packaging available.

Frequently Asked Questions – Carbon Steel Fasteners

Carbon Steel Fasteners consist of bolts, nuts, screws, washers, and threaded rods crafted from steel that is rich in carbon. They are known for their high strength, toughness, and outstanding performance in structural and industrial applications.

We offer CS fasteners in grades such as ASTM A307, A325, IS 2062, Grade 8.8, 10.9, 12.9, A105, and A350 LF2, along with various coatings including Black, HDG, Zinc, and PTFE.

These fasteners are extensively utilized in construction, oil & gas, petrochemical facilities, automotive sectors, heavy engineering, power generation, and pipelines, owing to their significant load-bearing capacity.

Grade 8.8: Medium tensile strength (800 MPa).
Grade 10.9: High tensile strength (1000 MPa), ideal for heavy-duty applications.

Yes, we offer HDG-coated fasteners designed for corrosion resistance in outdoor, marine, and high-humidity settings.

Certainly. We provide custom-made bolts, nuts, studs, and CNC machined fasteners tailored to drawings or specific client requirements.

Our fasteners adhere to international standards such as ASTM, ASME, DIN, ISO, BS, and JIS.

Yes, we keep a substantial ready stock and can deliver fasteners in bulk for industrial and project-based needs.

Yes, we export to regions including UAE, Saudi Arabia, Europe, Africa, the USA, and Asia, complete with all necessary documentation and test certificates.

We issue Mill Test Certificates (EN 10204 3.1), PMI, Hardness Test, UT, and Third-Party Inspection reports (TUV/BV/Lloyds).

Type of Carbon Steel Fasteners Available

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carbon steel heavy hex nuts supplier cs washers and screws manufacturer

Global Export Network

We export to more than 70+ countries:

USA • UK • Germany • Italy • UAE • Saudi Arabia • Qatar • Oman • Kuwait • Singapore • Malaysia • Indonesia • Australia • South Africa • Brazil • Mexico • India

All Shipments Include:
  • Packing List
  • Invoice
  • MTC 3.1 / 3.2
  • Third-Party Inspection (TUV/LR/BV) if required
  • Heat Number Traceability

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