ISO 4014
Hexagon Head Bolts (Partial Thread)
Manufacturer & Exporter
(~2000+ words, website-ready)
1. Introduction to ISO 4014 Hex Bolts
ISO 4014 specifies metric hexagon head bolts with partial thread, designed for high-strength bolted joints where shear resistance and clamping force are critical.
These bolts are widely used in:
- Heavy engineering
- Steel structures
- Automotive assemblies
- Oil & gas equipment
- Export EPC projects
At Super Industries India, we manufacture ISO 4014 hex bolts with strict dimensional control, certified mechanical properties, and export-grade quality.
Super Industries
Global Manufacturer of Heavy & Custom Engineered Fasteners & Flanges
2. What is ISO 4014?
ISO defines:
- Hexagon head bolts
- Metric threads
- Partial threaded shank
- Property classes from 4.6 to 10.9
Why Partial Thread Matters
The unthreaded shank:
✔ Improves shear strength
✔ Reduces stress concentration
✔ Enhances fatigue life
3. ISO 4014 vs ISO 4017 (Engineering Difference)
| Feature | ISO 4014 | ISO 4017 |
|---|---|---|
| Thread | Partial | Full |
| Shear capacity | Higher | Lower |
| Alignment | Better | Moderate |
| Typical use | Structural joints | General fastening |
👉 Engineers prefer ISO 4014 when shear load is significant.
4. Dimensional Specifications
ISO bolts follow metric thread series from M5 to M64 (and beyond on request).
Key Dimensions Defined
- Thread diameter (d)
- Bolt length (l)
- Thread length (b)
- Head height (k)
- Width across flats (s)
5. Dimensional Table (Sample)
| Diameter | Thread Pitch | Head Size (s) | Head Height (k) |
|---|---|---|---|
| M10 | 1.5 | 17 mm | 6.4 mm |
| M12 | 1.75 | 19 mm | 7.5 mm |
| M16 | 2.0 | 24 mm | 10 mm |
| M20 | 2.5 | 30 mm | 12.5 mm |
(Full tables available on request from Super Industries India)
6. Mechanical Properties
ISO 4014 bolts are manufactured according to ISO 898-1.
Property Classes
| Class | Tensile Strength | Yield Strength |
|---|---|---|
| 4.6 | 400 MPa | 240 MPa |
| 5.6 | 500 MPa | 300 MPa |
| 8.8 | 800 MPa | 640 MPa |
| 10.9 | 1040 MPa | 940 MPa |
Super Industries
Global Manufacturer of Heavy & Custom Engineered Fasteners & Flanges
7. Material Options
At Super Industries India, ISO 4014 bolts are produced in:
- Carbon steel
- Alloy steel (Cr-Mo)
- Stainless steel (ISO 3506)
- Special alloys (on request)
8. Heat Treatment Process
✔ Quenching & tempering
✔ Controlled hardness
✔ Uniform grain structure
Heat treatment ensures:
- Load-bearing reliability
- Long service life
- Compliance with ISO 898-1
9. Thread Manufacturing
ISO bolts are produced using:
✔ Thread rolling (preferred)
✔ Thread cutting (special sizes)
Thread rolling:
- Improves fatigue strength
- Produces smoother threads
10. Surface Finish & Coatings
Available finishes:
- Black oxide
- Zinc plated
- Hot dip galvanized
- Mechanical galvanizing
- PTFE / Xylan (on request)
11. Corrosion Resistance Options
| Environment | Recommended Finish |
|---|---|
| Indoor | Black / Zinc |
| Outdoor | HDG |
| Marine | SS A4 |
| Chemical | PTFE |
12. Marking & Identification
Bolts are marked with:
✔ Property class
✔ Manufacturer ID (SII)
Example:
“10.9 SII”
13. Applications
- Structural steel joints
- Machinery foundations
- Automotive frames
- Power plant equipment
- Oil & gas skids
14. Export Projects
ISO 4014 is accepted in:
✔ Europe
✔ USA (metric projects)
✔ Middle East
✔ Southeast Asia
15. Packaging for Export
✔ VCI packing
✔ Fumigated pallets
✔ Lot-wise labeling
16. Quality Control at Super Industries India
- Dimensional inspection
- Tensile testing
- Hardness testing
- Thread gauge inspection
17. Certification & Documentation
✔ EN 10204 3.1
✔ Third-party inspection
✔ Mill test certificates
18. ISO 4014 vs DIN 931
| Feature | ISO 4014 | DIN 931 |
|---|---|---|
| Standard | International | German |
| Acceptance | Global | Europe-focused |
| Dimensions | Harmonized | Legacy |
19. Why Buy ISO Bolts from Super Industries India?
✔ In-house manufacturing
✔ Export expertise
✔ Custom sizes
✔ Competitive pricing
20. How to Order ISO Bolts
Send us:
1️⃣ Size & length
2️⃣ Property class
3️⃣ Quantity
4️⃣ Coating
5️⃣ Destination country
21. Conclusion
ISO 4014 hex bolts are critical fasteners for structural and load-bearing joints. Choosing the right manufacturer ensures safety, compliance, and long-term performance.
Super Industries India delivers ISO bolts that meet engineering, export, and quality expectations worldwide.
📩 Call to Action
Looking for ISO 4014 Hex Bolts?
👉 Contact Super Industries India for customized, export-ready solutions.