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ISO Fasteners – Manufacturer, Exporter & Supplier

Precision-engineered fasteners manufactured to International Organization for Standardization (ISO) specifications, exported to over 50 countries worldwide. Sterling Fasteners produces the full ISO-standard bolt, screw, nut and washer range, backed by full material traceability and third-party mill test reports for globally specified projects.
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View Standards

500+

Sizes Available

40+

Standards Covered

50+

Countries Exported

25+

Years Experience

What is ISO Fasteners?

ISO Fasteners are bolts, screws, nuts and washers manufactured to specifications published by the International Organization for Standardization (ISO), the world’s most widely recognised fastener standard framework. ISO specifications define precise tolerances for thread pitch, head geometry, drive type and material property class, making ISO fasteners the global benchmark for engineering interchangeability across every major industry. Sterling Fasteners manufactures the complete ISO catalogue — hex bolts, socket head cap screws, hex nuts, washers and specialty fasteners — under a single quality management system, giving buyers one supplier for an entire ISO bill of materials. Our production facility runs cold-forging and CNC threading lines dedicated to metric fasteners, supported by an in-house metallurgical lab for batch testing. Whether you need a single ISO 4014 size or a mixed container of multiple ISO standards, our export team consolidates documentation, packing lists and mill certificates into one shipment.
Attribute Value
Material Options Carbon Steel
Thread Type Metric
Strength Grade 8.8, A2-70
Finish Zinc Plated
Common Standards ISO Fasteners
Applications Machinery Assembly
Industries Automotive

Why Choose Us as Your ISO Fasteners Manufacturer

From certified production to export-ready documentation, here’s what sets Sterling Fasteners apart as an ISO fasteners manufacturer and supplier.
ISO Certified

Every ISO fastener is manufactured under our ISO 9001:2015 quality management system, with in-process and final inspection at every stage.

Global Export

We ship ISO fasteners to 50+ countries with complete export documentation, consolidated freight and customs-ready paperwork.

Fast Delivery

Stocked ISO sizes dispatch within 48 hours; production runs for non-stock sizes are scheduled weekly to keep lead times short.

Full Documentation

EN 10204 3.1 mill test certificates and full batch traceability accompany every ISO fastener shipment.

Custom Sizes

Non-standard lengths, materials and finishes for ISO fasteners are produced to customer drawing, subject to minimum order quantities.

Competitive Pricing

Factory-direct manufacturing keeps ISO fastener pricing competitive, with tiered discounts on bulk export orders.

Explore Related ISO Fastener Standards & Specifications

Discover a complete range of ISO fastener standards covering bolts, nuts, screws, washers, threaded rods, and other industrial fastening solutions. Browse detailed specifications, dimensions, applications, and manufacturing information to find the right ISO standard for your project.
ISO 10642
ISO 14579
ISO 4014
ISO 4017
ISO 4032
ISO 4161
ISO 4762
ISO 7040
ISO 7089
ISO 7090
ISO 7091
ISO 7092
ISO 7093
ISO 7094
ISO 8676
ISO 8765

ISO Fasteners Complete Range for Metric Bolts, Nuts, Screws, Washers

ISO covers a wide family of international standards for industrial fasteners, including bolts, nuts, screws, washers, and threaded rods in metric thread series. This section highlights typical size ranges, dimensional specifications, and precision manufacturing requirements used for global fastening solutions.
StandardTypeSize RangeThread
ISO 4014Hex Bolt (Partial Thread)M5 – M100Coarse
ISO 4017Hex Set Screw (Full Thread)M3 – M64Coarse & Fine
ISO 4032Hex NutM3 – M100Coarse & Fine
ISO 4762Socket Head Cap ScrewM3 – M64Coarse & Fine
ISO 7089Flat WasherM3 – M100—
ISO 10642Countersunk Socket ScrewM3 – M20Coarse & Fine

ISO Material Grades and Surface Finishes for Industrial Fasteners

ISO fasteners are supplied across a range of property classes and surface treatments, selected to match load, corrosion and environmental requirements.
Property Classes
4.6 8.8 10.9 12.9 A2-70 A4-80
Surface Treatments
Zinc Plated Hot-Dip Galvanized (HDG) Geomet Dacromet Plain / Black Oxide

ISO Quality Assurance, Compliance and Inspection for Industrial Fasteners

Every ISO fastener shipment is backed by recognised quality certifications and independent verification, giving buyers confidence in material integrity and compliance.
ISO 9001:2015

Certified quality management system covering design, manufacturing and dispatch.

EN 10204 3.1 Mill Test Reports

Independently validated material certificates issued with every shipment.

Third-Party Inspection

Independent third-party inspection can be arranged upon customer request before shipment.

ISO Fasteners for Industrial, Mechanical and Engineering Applications

ISO fasteners are commonly used in machinery, equipment, fabrication, maintenance, automotive support systems, infrastructure, and general engineering where reliable fastening, durability, precision fit, and compliance with international standards are required for safe and efficient assembly.
ISO fasteners provide the structural bolting and anchoring strength required for building frameworks, bridges and infrastructure projects worldwide.
High-tensile ISO bolts and nuts are used across chassis, engine and assembly applications where fatigue resistance and precise fit are critical.
Corrosion-resistant ISO fasteners in higher property classes support piping, flange and equipment assembly in demanding oil and gas environments.
ISO fasteners are the default choice for general machinery, equipment and fabrication work across metric-standard markets worldwide.

Source ISO Fasteners for Global Industrial Supply and Engineering Projects

Request a quotation or share your project requirements for ISO fasteners manufactured to international standards for industrial applications worldwide. We support consistent quality, technical accuracy, and dependable supply for bolts, nuts, screws, washers, and threaded rods.
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+91 90226 36025
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ISO FAQs, Technical Information and Buying Guide for Fasteners

ISO fasteners are specified for industrial applications where dimensions, tolerances, materials, and thread specifications must align with engineering standards and quality requirements. For bolts, nuts, screws, washers, and threaded rods, ISO compliance supports reliable performance across demanding service conditions.
Sterling Fasteners manufactures the full range of ISO fastener standards, including ISO 4014 and 4017 hex bolts, ISO 4032 hex nuts, ISO 4762 socket head cap screws and ISO 7089 washers, in metric sizes M3 to M100.
Minimum order quantities for ISO fasteners vary by size and standard, typically starting from 500 pieces per size, with smaller trial orders available for new export customers.
Yes, Sterling Fasteners produces ISO fasteners in non-standard lengths, special alloys and custom surface finishes to customer drawings, subject to minimum order quantities.
Stocked ISO fastener sizes dispatch within 48 hours of order confirmation. Custom production runs typically ship within 3–5 weeks depending on size and order volume.

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