Walid Stainless, headquartered in Tunis, Tunisia, is a trusted manufacturer and supplier of high-performance stainless steel fasteners. Their Stainless Steel 253 MA Fasteners are engineered for high-temperature and highly corrosive environments, offering excellent resistance to oxidation, scaling, and chloride-induced corrosion. With a high chromium and nickel content, and stabilized with nitrogen, these fasteners provide long-term durability and mechanical stability. Manufactured under strict quality control, Walid Stainless ensures precise threading, smooth finishes, and consistent strength. Customers rely on 253 MA Fasteners for secure, reliable, and long-lasting performance in demanding chemical, power generation, and industrial applications.
Stainless Steel 253 MA Fasteners are made from a martensitic stainless steel alloy containing approximately 22% chromium, 7% nickel, 0.7% molybdenum, and small amounts of nitrogen. This composition provides outstanding resistance to high-temperature oxidation, scaling, and aggressive corrosion. The fasteners typically exhibit tensile strength between 600–800 MPa and hardness around 200–230 HB. Their stabilized austenitic-martensitic structure ensures excellent toughness, creep resistance, and mechanical reliability under extreme conditions, making them ideal for high-temperature and corrosive environments.
| Specifications | ASTM A193 ASME SA193 / ASTM F593, F594, F1554 / ASME SF593, F594, F1554 |
| Standard | DIN, ASTM, BS and all International Standards |
| Bolts Size | 3 mm to 200 mm | Custom Sizes |
| Nut Size | M3 – M56 | 3/6″ to 2″ | Custom Sizes |
| Screw Size | M3 – M56 | 3/6″ to 2″ | Custom Sizes |
| Machine Screws Size | M1.6 – M12 | Custom Sizes |
| Washers Size | M3 – M56 | 3/6″ to 2″ | Custom Sizes |
| Fasteners Type | Nut, Hex Coupling Nut, Hex Nut, Square Nut, Hex Domed Cap Nuts, Hex Head Bolts, Stud Bolts, Socket Hexagon Head Screw, Pan Head Screw, Socket Head Cap Screw, Wing Screw, T-Head Bolts, Foundation Bolts,Screw, Studs, Socket Screw, Hex Set Screw, Cap Screw, Machine Screw, Wing Screw, Spring Washers, Washers, Studs, Marine Anchors, Anchors, Hexagon Nut,U- Bolts, Anchor Bolt, Mushroom Head Square Neck Bolts, J Bolts,Eye Bolt,Structural Bolts, Bolts, Nuts, Sockets, Screws, Allen Cap screw |
| Grade | C | Mn | Si | S | Ce | Ni | Cr | P |
| 253 MA | 0.05 – 0.10 | 0.80 max | 1.40 – 2 | 0.030 max | 0.03 – 0.08 | 10 – 12 | 20 – 22 | 0.040 max |
|
Tensile Str (MPa) min |
Yield Str 0.2% Proof (MPa) min |
Elongation (% in 50mm) min |
Hardness |
|
|
Rockwell B (HR B) max |
Brinell (HB) max |
|||
|
600 |
310 |
40 |
95 |
217 |
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Stainless Steel 253 MA nuts offer exceptional corrosion resistance, especially in high-temperature environments. Common sizes range from M6 to M64, with varying dimensions according to industry standards. These nuts are ideal for applications requiring resistance to oxidative and carburizing environments.
Stainless Steel 253 MA stud bolts provide excellent corrosion resistance and high-temperature stability. They are typically available in sizes ranging from M6 to M30 and lengths from 50 mm to 300 mm. They are used in high-stress, high-temperature applications where durability is crucial.
Stainless Steel 253 MA bolts resist corrosion and maintain strength at elevated temperatures. They are commonly available in sizes from M6 to M100, with lengths varying from 20 mm to 200 mm. It is ideal for high-temperature and corrosive environments.
Stainless Steel 253 MA threaded rods offer superior corrosion resistance and high-temperature performance. Standard sizes include diameters from M6 to M30 and lengths up to 1000 mm. Suitable for heavy-duty applications where reliable performance is essential.
Stainless Steel 253 MA screws provide robust corrosion resistance, particularly in harsh environments. Sizes typically range from M4 to M20, with lengths from 10 mm to 150 mm. They are used in applications requiring high-temperature strength and durability.
Stainless Steel 253 MA washers exhibit excellent corrosion resistance and high-temperature endurance. They are generally available in diameters from 6 mm to 100 mm, varying thicknesses according to specific requirements. It is essential for providing a reliable sealing surface and load distribution.
A high-performance fastener designed for use in very high-temperature applications and characterized by excellent oxidation resistance and outstanding strength. These fasteners are tough, dependable, and meet industry standards of performance. Their quality is enhanced through Positive Material Identification testing, timely deliveries, and secure packaging-all in all making them highly suitable for harsh industrial environments at Walid Stainless.
Stainless Steel 253 MA Fasteners are widely used in industries where heat resistance and corrosion resistance are critical. Common applications include power generation plants, petrochemical units, heat exchangers, boilers, furnace components, and high-temperature chemical processing equipment. Their ability to withstand extreme temperatures, thermal cycling, and aggressive chemical exposure makes them ideal for bolted assemblies in challenging environments. Engineers and maintenance professionals rely on 253 MA Fasteners for long-term durability, secure fastening, and reliable performance. Walid Stainless ensures each fastener meets strict quality standards, providing dependable operation in demanding industrial and high-temperature applications.
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