Vinit Stainless proudly produces and provides stainless steel 440C fasteners in Chennai, India. They are known for their high hardness and wear resistances, and our 440C fasteners are designed for challenging industrial uses. Precision-crafted using high-carbon martensitic stainless steel, these fasteners offer exceptional performance in environments requiring strength, corrosion resistance, and durability. As a trusted supplier to industries such as aerospace, defense, and heavy machinery, Vinit Stainless ensures all 440C fasteners meet stringent quality and mechanical standards. Our commitment to precision manufacturing makes us the preferred choice for robust stainless steel fastening solutions in India and across the globe.
440C stainless steel fasteners are produced from a martensitic, high-carbon alloy with 16–18% chromium and 0.95–1.20% carbon. The fasteners may be heat-treated to a Rockwell hardness of 60 HRC or less, providing excellent wear and abrasion resistance. They have tensile strengths of over 760 MPa and moderate corrosion resistance. Although not as corrosion-resistant as austenitic grades, 440C fasteners offer higher strength and hardness, which are desirable in high-stress applications. They are ferromagnetic and have restricted weldability and are usually applied where hard-wearing and severe mechanical performance are needed.
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.
440C stainless steel fasteners are typically employed in high-load, wear critical applications like aerospace parts, high-speed tools, precision bearings, and military hardware. Their strength and hardness render them ideal for pumps, valves, and other equipment that operates under stress or friction. In medicine, they are applied in implant-grade devices and surgical instruments because of their wear resistance and strength. 440C fasteners are also applied in the oil & gas, marine, and defense industries, where material integrity in stressed applications is important. Their performance in extreme conditions makes them best suited for premium-grade fastening needs.
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