DIN 603 Carriage Bolt Manufacturer, Exporter & Supplier | Dipti Metal Industries
DIN 603 Carriage Bolt Manufacturer, Exporter & Supplier | Dipti Metal Industries
DIN 603 Carriage Bolt Manufacturer, Exporter & Supplier in India
Your Trusted Source for Precision-Engineered Fasteners and Industrial Bolts
About DIN 603 Carriage Bolts
DIN 603 carriage bolts, also known as round head square neck bolts, are widely used in wood-to-metal fastening, construction, railways, and mechanical assemblies. Their smooth domed heads and square necks prevent spinning while tightening, ensuring secure joints.
Why Choose Dipti Metal Industries?
- Top Manufacturer in India: Adhering to DIN and ISO standards for global reliability.
- Wide Material Range: Stainless steel, carbon steel, alloy steel, duplex, super duplex, nickel alloys, brass, and copper.
- Global Exports: Supplied to clients in Europe, UAE, Africa, Southeast Asia, and more.
- Custom Manufacturing: Bolts available in a variety of coatings, sizes, and thread types.
- Bulk Readiness: High-capacity inventory and on-time dispatch.
Material Grades & Standards for DIN 603 Carriage Bolts
Stainless Steel Grades (as per DIN EN ISO 3506)
All bolts conform to A2 and A4 austenitic grades with varying strength classes:
- A2-50, A2-70, A2-80 — Cold-worked 304 stainless steel (1.4301, 1.4306, 1.4303)
- A4-70, A4-80 — Cold-worked 316 stainless steel (1.4401, 1.4404)
Mechanical Properties (Austenitic Stainless Steel)
| Grade | Tensile Strength (N/mm²) | Strength Class |
|---|---|---|
| A2, A4 | 500 - 800 | 50 / 70 / 80 |
Chemical Composition Ranges (Selected Grades)
| Grade | Cr % | Ni % | Mo % | C % max |
|---|---|---|---|---|
| 304 (1.4301) | 17.5–19.5 | 8.0–10.5 | — | 0.07 |
| 316 (1.4401) | 16.5–18.5 | 10.0–13.0 | 2.0–2.5 | 0.07 |
Carbon Steel & Alloy Steel Grades
- Carbon Steel: 4.6, 4.8, 5.8, 6.8
- Alloy Steel: 8.8, 9.8, 10.9, 12.9 (quenched and tempered)
Mechanical Properties (Carbon & Alloy Steel)
| Grade | Tensile Strength (N/mm²) | Vickers Hardness (HV) | Tempering Temp (°C) |
|---|---|---|---|
| 8.8 | 800–830 | 250–255 | 425 |
| 10.9 | 1040–1100 | 290–320 | 425 |
| 12.9 | 1180–1220 | 320–385 | 380 |
Additional Options Available
On request, DIN 603 carriage bolts can also be manufactured in:
- Duplex & Super Duplex: UNS S31803, S32205, S32750, S32760
- Nickel Alloys: Inconel 600/625/718, Monel 400/K500, Hastelloy C22/C276, Nickel 200/201
- Brass & Copper: IS 319, CZ121, Naval Brass, Phosphor Bronze, C101/C110 (ETP)
Applications
- Railway Fasteners
- Furniture & Timber Connections
- Marine & Offshore Engineering
- Structural Steel & Bridges
- Automobile Components
- Heavy Machinery & Plant Equipment
Get in Touch
Looking for high-quality DIN 603 carriage bolts in various grades and coatings? Get in touch with Dipti Metal Industries today.
Email: sales@diptimetal.com
Phone: +91-9975266499
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