MS Fasteners
What are MS Fasteners?
Mild Steel (MS) Fasteners are widely used to securely join components in construction, fabrication, and industrial applications. Known for their strength, machinability, and cost-effectiveness, they are a reliable choice for both light-duty and heavy-duty requirements. Available as MS bolts, nuts, screws, washers, and threaded studs, these fasteners come in various grades, sizes, and finishes to suit different operating conditions.
At Asiad Steel Industries, we supply premium-quality Mild Steel fasteners manufactured in compliance with IS, ASTM, DIN, and other international standards, ensuring consistent performance, durability, and dimensional accuracy across applications.
Key Features
High Strength
Performance
Durable
Construction
Easy Fabrication
& Installation
Wide
Compatibility
Smooth
Surface Finish
Specifications
| Specification Category | Parameter / Feature | Details / Options |
|---|---|---|
| Product Types | Included Categories | Bolts, Nuts, Washers, Screws, Studs, Threaded Rods |
| Size Range | Bolts & Studs | Diameter: M6 – M64; Length: 20 mm – 1000 mm |
| Nuts | Diameter: M6 – M64 | |
| Washers | Dia: 5 mm – 200 mm (custom sizes available) | |
| Screws | Dia: 3 mm – 20 mm; Length: 10 mm – 200 mm | |
| Grades & Standards | Common Grades | IS 1363, IS 1367, IS 3757, ASTM A307, DIN standards |
| Manufacturing Method | Process | Forged, Machined, Heat Treated, Thread Rolled |
| Surface Finish | Options | Self-color, Black Oxide, Zinc Plated, Galvanized, HDG |
| Mechanical Properties | Tensile Strength | 400 – 600 MPa (depending on grade) |
| Yield Strength | 240 – 350 MPa | |
| Hardness | 100 – 250 HB | |
| Testing & Inspection | NDT | MPI, UT |
| Destructive Tests | Tensile Test, Hardness Test, Proof Load Test |
Dimensions
| Fastener Type | Diameter Range (mm) | Length Range (mm) | Standard Pitch | Weight (approx. per 100 pcs) | Tolerance |
|---|---|---|---|---|---|
| MS Hex Bolts & Nuts | M6 – M64 | 20 – 1000 | ISO/DIN standard | Varies by size (e.g., M16 x 50 = ~6.4 kg/100 pcs) | ±5% |
| MS Studs & Threaded Rods | M8 – M48 | 100 – 2000 | Standard/Custom | Depends on length & dia. | ±5% |
| MS Washers | 5 – 200 | – | – | ~0.5 – 25 kg/100 pcs | ±5% |
| MS Screws | 3 – 20 | 10 – 200 | Fine/Coarse thread | Varies by type | ±5% |
Chemical Composition
| Element | IS 1367 | IS 1363 | ASTM A307 Grade A | ASTM A307 Grade B |
|---|---|---|---|---|
| Carbon (C) | ≤ 0.25 | ≤ 0.25 | ≤ 0.29 | ≤ 0.29 |
| Manganese (Mn) | ≤ 1.60 | ≤ 1.60 | ≤ 1.20 | ≤ 1.20 |
| Silicon (Si) | ≤ 0.10 | ≤ 0.10 | ≤ 0.10 | ≤ 0.10 |
| Phosphorus (P) | ≤ 0.040 | ≤ 0.040 | ≤ 0.050 | ≤ 0.050 |
| Sulfur (S) | ≤ 0.040 | ≤ 0.040 | ≤ 0.050 | ≤ 0.050 |
| Iron (Fe) | Balance | Balance | Balance | Balance |
Applications of MS Fasteners
Construction &
Infrastructure
Automotive & Heavy
Equipment
Manufacturing &
Fabrication
Medical & Laboratory
Equipment
Electrical &
Electronics Assembly
Oil, Gas & Petrochemical
Installations
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