ISO STANDARDS
COMPLETE GUIDE FOR FASTENERS
(Grades, Specifications & Applications)
Manufacturer & Exporter: Super Industries India
1. What is ISO?
ISO (International Organization for Standardization) is a global body that develops international standards to ensure quality, safety, reliability, and interchangeability of products across countries.
In the fastener industry, ISO standards define:
- Dimensions
- Mechanical properties
- Tolerances
- Materials
- Testing methods
ISO fasteners are globally accepted, making them the preferred choice for export markets such as the USA, Europe, Middle East, and Asia-Pacific.
At Super Industries India, we manufacture ISO-standard fasteners that comply with international engineering and export requirements.
Super Industries
Global Manufacturer of Heavy & Custom Engineered Fasteners & Flanges
2. Why ISO Standards Matter in Fasteners
✔ Global interchangeability
✔ Engineering consistency
✔ International acceptance
✔ Export compliance
✔ EPC & project approvals
ISO standards often replace DIN or are used alongside DIN in modern projects.
3. ISO vs DIN vs ASTM (Quick Comparison)
| Feature | ISO | DIN | ASTM |
|---|---|---|---|
| Origin | International | Germany | USA |
| Global acceptance | Very High | High | High (USA) |
| Usage | Worldwide | Europe/Asia | USA |
| Metric system | Yes | Yes | Mixed |
4. ISO FASTENER GRADES (Mechanical Properties)
ISO Property Classes for Steel Fasteners
| Property Class | Tensile Strength (MPa) | Yield Strength (MPa) |
|---|---|---|
| 4.6 | 400 | 240 |
| 5.6 | 500 | 300 |
| 8.8 | 800 | 640 |
| 9.8 | 900 | 720 |
| 10.9 | 1040 | 940 |
| 12.9 | 1220 | 1100 |
5. COMPLETE ISO FASTENER STANDARDS TABLE
(Bolts, Screws, Nuts, Washers, Studs)
✅ Website-ready master table
(You can split this into multiple tables later if needed)
Super Industries
Global Manufacturer of Heavy & Custom Engineered Fasteners & Flanges
🔩 ISO BOLTS & SCREWS
| ISO Standard | Product Description | Equivalent DIN | Grades / Property Class |
|---|---|---|---|
| ISO 4014 | Hex bolt (partial thread) | DIN 931 | 4.6, 5.6, 8.8, 10.9 |
| ISO 4017 | Hex bolt (full thread) | DIN 933 | 4.6, 5.6, 8.8, 10.9 |
| ISO 4762 | Socket head cap screw | DIN 912 | 8.8, 10.9, 12.9 |
| ISO 7380 | Button head socket screw | DIN 7380 | 8.8, 10.9 |
| ISO 10642 | Countersunk socket screw | DIN 7991 | 10.9, 12.9 |
| ISO 8676 | Hex head screw | DIN 558 | 4.6, 5.6 |
| ISO 14579 | Hexalobular (TORX) screw | DIN TX | 8.8, 10.9 |
🔩 ISO STUD BOLTS & THREADED RODS
| ISO Standard | Product Description | Equivalent DIN | Grades |
|---|---|---|---|
| ISO 898-1 | Mechanical properties of bolts & studs | DIN EN ISO | 4.6–12.9 |
| ISO 976-1 | Metric threaded rods | DIN 976 | 4.6, 5.6, 8.8 |
| ISO 898-2 | Mechanical properties of nuts | DIN 934 | Class 8, 10, 12 |
🔩 ISO NUTS
| ISO Standard | Nut Type | Equivalent DIN | Strength Class |
|---|---|---|---|
| ISO 4032 | Hex nut | DIN 934 | Class 8, 10, 12 |
| ISO 4033 | Hex thin nut | DIN 439 | Class 04, 05 |
| ISO 7040 | Prevailing torque nut (metal) | DIN 980 | Class 8, 10 |
| ISO 7042 | Nylon insert lock nut | DIN 985 | Class 8, 10 |
| ISO 4161 | Hex flange nut | DIN 6923 | Class 8, 10 |
🔩 ISO WASHERS
| ISO Standard | Washer Type | Equivalent DIN | Material |
|---|---|---|---|
| ISO 7089 | Plain washer | DIN 125 A | Carbon / SS |
| ISO 7090 | Plain washer chamfered | DIN 125 B | Carbon / SS |
| ISO 7091 | Washer for hex bolts | DIN 126 | Carbon |
| ISO 7093-1 | Large OD washer | DIN 9021 | Carbon / SS |
| ISO 7092 | Spring washer | DIN 127 | Spring steel |
🔩 ISO FLANGE & STRUCTURAL FASTENERS
| ISO Standard | Description | Equivalent DIN | Grade |
|---|---|---|---|
| ISO 4162 | Hex flange bolt | DIN 6921 | 8.8, 10.9 |
| ISO 898-1 | Structural bolt properties | DIN 6914 | 8.8, 10.9 |
| ISO 7412 | Structural nut | DIN 6915 | Class 10 |
6. ISO MATERIAL SPECIFICATIONS
| Material | ISO Grade | Application |
|---|---|---|
| Carbon Steel | ISO 898 | General engineering |
| Alloy Steel | ISO 898 | High tensile loads |
| Stainless Steel | ISO 3506 | Corrosion resistance |
| A2-70 | ISO 3506-1 | Marine / chemical |
| A4-80 | ISO 3506-1 | Offshore / acidic |
7. ISO 3506 – Stainless Steel Fasteners (IMPORTANT)
| Grade | Material | Tensile Strength |
|---|---|---|
| A2-70 | SS 304 | 700 MPa |
| A4-70 | SS 316 | 700 MPa |
| A4-80 | SS 316 | 800 MPa |
8. Applications of ISO Fasteners
✔ Oil & Gas
✔ Infrastructure
✔ Power plants
✔ Heavy engineering
✔ Automotive
✔ Export EPC projects
9. ISO Fasteners Manufacturing at Super Industries India
We manufacture ISO fasteners with:
✔ Controlled forging
✔ Heat treatment
✔ Thread rolling
✔ Surface coating
✔ Export packaging
10. Quality & Certification
✔ EN 10204 3.1 / 3.2
✔ Third-party inspection
✔ Full traceability
✔ Batch-wise testing
11. Why Buyers Choose ISO Fasteners from Super Industries India
✔ Global compliance
✔ DIN–ISO interchangeability
✔ Custom manufacturing
✔ Export expertise
12. Call to Action (Conversion Section)
📩 Looking for ISO-standard fasteners?
Contact Super Industries India for customized, export-ready ISO bolts, nuts, washers & studs.