Walid Stainless, headquartered in Tunis, Tunisia, is a leading manufacturer and supplier of high-quality stainless steel products. Among their offerings are Stainless Steel 440C Fasteners, engineered for applications requiring high hardness, wear resistance, and corrosion resistance. These fasteners are ideal for industrial, mechanical, and precision applications where strength and durability are critical, including tooling, machinery, and high-load assemblies. Each fastener is manufactured with precision and undergoes strict quality control to ensure consistent performance. Clients rely on 440C Fasteners from Walid Stainless for secure, long-lasting, and dependable fastening solutions in demanding industrial and mechanical projects.
Stainless Steel 440C Fasteners are made from a high-carbon martensitic stainless steel alloy containing approximately 16–18% chromium and 0.95–1.2% carbon. This composition provides excellent hardness, wear resistance, and moderate corrosion resistance. These fasteners typically exhibit tensile strength between 750–900 MPa and hardness around 58–60 HRC after heat treatment. The martensitic structure ensures mechanical durability, wear resistance, and dimensional stability under heavy loads and mechanical stress. 440C Fasteners are suitable for precision machinery, tooling, industrial, and high-load applications where strength, hardness, and long-term reliability are essential.
Specification : ASTM A193 / ASME SA193
Dimensions : ASME B18.2.1, ASME B18.3, DIN 931, DIN 933, DIN 934, DIN 7991, DIN 976
Standard : DIN, GB, BS, ISO, IS, JIS, ASTM, ASME, EN, etc.
Size : M02 to M33
Length : 3 mm to 200 mm
Threads : ASME B1.1 2A/3A – 2B/3B Inch Unified Threads and B1.13M 6h-6G Metric Coarse Threads
Types : Nuts, Bolts, Screws, Sockets, Studs, Screw, Hex Set Screw, Socket Screw, Cap Screw, Pan Head Screw, Machine Screw, Socket Head Cap Screw, Allen Cap screw, Wing Screw, Washers, Spring Washers, Studs, Anchors, Marine Anchors, Nut, Hexagon Nut, Hex Nut, Hex Coupling Nut, Hex Domed Cap Nuts, Square Nut, Stud Bolts, Hex Head Bolts, Socket Hexagon Head Screw Anchor Bolt, U- Bolts, J Bolts, Mushroom Head Square Neck Bolts, T-Head Bolts, Wing Screw, Eye Bolt, Foundation Bolts, Structural Bolts.
| Grade | C | Mn | Si | P | S | Cr | |
| 440C | min. | 0.95 – 1.20 | – | – | – | – | 16.0 |
| max. | 0.12 | 1.0 | 1.00 | 0.04 | 0.030 | 18.0 | |
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| 440C | 758 | 448 | 14 | 95 | – |
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These nuts offer high corrosion resistance and excellent strength due to the high carbon content in 440c stainless steel. They are available in sizes ranging from M3 to M48 and meet various industrial standards for dimensions and tolerances.
440c Stud Bolts provide exceptional corrosion resistance and high tensile strength. They come in diameters from M6 to M30 and lengths from 50mm to 1000mm, suitable for demanding applications requiring precision and durability.
440c Bolts are ideal for harsh environments and offer superior corrosion resistance and high strength. They are available sizes from M5 to M36, with varying lengths and thread specifications to meet diverse application needs.
These threaded rods are known for their excellent corrosion resistance and high tensile strength. They are typically available in diameters from M6 to M30 and lengths up to 3000mm, suitable for use in various industrial settings.
440c screws provide robust corrosion resistance and high strength. Commonly available in sizes from M3 to M20, lengths varying based on application needs, they are ideal for precision and heavy-duty fastening tasks.
440C washers offer outstanding corrosion resistance and durability, making them ideal for distributing loads and protecting surfaces. They are available in sizes from M3 to M36 and come in various thicknesses to meet specific application needs. Their robust properties ensure reliable performance in demanding environments.
At Walid Stainless we ensure that our Stainless Steel 440C Fasteners undergo rigorous quality tests, including Hardness Test, PMI Testing, Chemical Analysis, and IGC Test, to guarantee excellence. We provide detailed documentation such as invoices with HS codes, packaging lists, Certificates of Origin, and Guarantee Letters. Additionally, Third-Party Inspection Certificates ensure complete client satisfaction and reliability.
Stainless Steel 440C Fasteners are widely used in industries requiring high-strength, wear-resistant, and corrosion-resistant fastening solutions. They are ideal for precision machinery, industrial equipment, tooling assemblies, pumps, valves, and high-load mechanical systems. The martensitic structure provides superior hardness and wear resistance, making these fasteners reliable in heavy-duty and high-stress applications. Engineers and technicians rely on 440C Fasteners for secure, precise, and durable fastening performance. Walid Stainless ensures that each fastener meets strict quality standards, providing dependable materials for industrial, mechanical, and precision engineering projects requiring strength, durability, and long-term reliability.
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