Hardware Products
A4-70 Stainless Steel Hex Bolts
Premium A4-70 (AISI 316) stainless steel hex bolts engineered for superior corrosion resistance in marine, chemical, and offshore environments. Manufactured to ISO 3506-1 and DIN 931/933 standards with a minimum tensile strength of 700 MPa, these bolts deliver reliable performance in the most demanding conditions.
Key Features
AISI 316 (A4) stainless steel with 2-3% molybdenum for enhanced chloride resistance
Minimum tensile strength of 700 MPa (101,500 PSI)
Yield strength of 450 MPa with 40% minimum elongation
Compliant with ISO 3506-1, DIN 931, DIN 933, ISO 4014, and ISO 4017
Passivated surface finish for maximum corrosion protection
Full traceability with material test certificates available
Non-magnetic austenitic structure suitable for sensitive equipment
Technical Specifications
| Material | AISI 316 / 1.4401 Stainless Steel |
| Property Class | A4-70 |
| Tensile Strength | Min. 700 MPa |
| Yield Strength | Min. 450 MPa |
| Elongation | Min. 40% |
| Hardness | Max. 250 HB |
| Size Range | M6 – M64 |
| Thread Type | ISO Metric Coarse / Fine |
| Standards | ISO 3506-1 / DIN 931 / DIN 933 |
| Surface Finish | Passivated / Plain |
| Cr Content | 16.0 – 18.0% |
| Ni Content | 10.0 – 14.0% |
| Mo Content | 2.0 – 3.0% |
Material Properties
- High strength-to-weight ratio for optimal performance
- Excellent corrosion and chemical resistance
- Non-conductive and electrically insulating
- UV resistant for outdoor applications
- Low thermal conductivity
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