Chanchai Stainless in Bangkok, Thailand, is a reliable manufacturer and supplier of high-quality stainless steel 440C fasteners that are renowned for their exceptional hardness, wear resistance, and strength. Designed as per rigorous international specifications, these fasteners are best suited for applications with heavy demands where durability and precision play a key role. In the forms of bolts, screws, and nuts, Chanchai Stainless delivers high-quality 440C fasteners with great mechanical performance and corrosion resistance. Serving businesses throughout Thailand and international markets, they offer dependable fastening products capable of withstanding high stress and abrasive conditions.
440C stainless steel fasteners are produced from a martensitic stainless steel alloy of relatively high carbon content, with approximately 16–18% chromium and 0.95–1.20% carbon. This enables them to be heat treated to very high levels of hardness, generally up to 60 HRC, with tensile strengths over 760 MPa. They provide good wear resistance, dimensional stability, and only moderate corrosion resistance, particularly in less aggressive environments. Their balance of hardness and strength allows them to be used in precision and high-load fastening 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 | – |
Contact us to get a quick quote for your requirement.
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 Chanchai 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.
440C stainless steel fasteners are commonly applied in high-strength, wear-resistant components used in the aerospace, automotive, and tooling industries where fastening components are subjected to hard loads and abrasion. They are also utilized in valve assemblies, pumps, instruments, and marine equipment where mechanical strength and corrosion resistance are required. Their strength and long lifespan make 440C fasteners a perfect fit for critical, high-performance applications under demanding environments.
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