Nakamura Stainless is a well-respected manufacturer and supplier based in Pulau Ujong, Singapore, known for providing top-notch stainless steel solutions to industries around the globe. One of their standout products is the Stainless Steel 440C Fasteners, which are celebrated for their remarkable hardness, wear resistance, and strength. As one of the hardest martensitic stainless steels available, 440C offers impressive durability while maintaining moderate corrosion resistance. These fasteners are designed to ensure secure and reliable performance, even in applications that face heavy stress and wear. With a commitment to international standards, Nakamura Stainless guarantees that their Stainless Steel 440C Fasteners uphold the highest levels of quality, precision, and consistency.
These fasteners are made from high-carbon stainless steel, containing 16–18% chromium and up to 1.2% carbon. This unique blend allows them to achieve an impressive hardness of up to 58 HRC and a tensile strength that exceeds 760 MPa after heat treatment. They boast excellent fatigue strength, wear resistance, and toughness, making them perfect for high-stress environments. While their corrosion resistance may not match that of austenitic stainless steels, their superior mechanical strength and hardness make them essential for demanding applications.
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 Nakamura 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 find their place in various industries that demand maximum strength and wear resistance. They’re commonly used in aerospace, automotive, and defense sectors for high-stress assemblies. Heavy machinery, pumps, valves, and tooling equipment also depend on these fasteners for their durability and reliability. Moreover, they are utilized in surgical instruments, bearings, and precision engineering equipment where both hardness and performance are crucial. With their robust properties and long service life, Stainless Steel 440C Fasteners offer reliable fastening solutions for some of the toughest industrial applications.
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