Mitchell Stainless, a trusted manufacturer and supplier in Hamilton, New Zealand, offers premium Stainless Steel 253MA fasteners designed for high-temperature and corrosion-resistant applications. 253MA is a fully austenitic heat-resistant stainless steel with excellent creep strength and outstanding oxidation resistance, making it ideal for power generation, chemical processing, and industrial high-temperature equipment. Mitchell Stainless ensures that each fastener meets strict quality standards, providing precise dimensions, consistent mechanical performance, and long-term durability. These fasteners are engineered for critical assemblies where reliability, structural integrity, and thermal resistance are essential in demanding industrial environments.
Stainless Steel 253MA fasteners are composed primarily of iron, with 21–23% chromium, 11–13% nickel, 0.4–0.6% nitrogen, and small amounts of manganese, silicon, and carbon. The addition of nitrogen enhances strength, creep resistance, and corrosion resistance at elevated temperatures. Chromium and nickel provide excellent oxidation and scaling resistance, while the controlled carbon content minimizes carbide precipitation, ensuring structural stability. This composition allows 253MA fasteners to maintain mechanical integrity, corrosion resistance, and durability even under prolonged exposure to high-temperature and aggressive industrial 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 |
Contact us to get a quick quote for your requirement.
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 Mitchell Stainless.
Stainless Steel 253MA fasteners are widely used in boilers, superheaters, heat exchangers, power generation equipment, chemical processing plants, and industrial systems exposed to high temperatures and corrosive environments. Typical applications include bolting of high-temperature piping, pressure vessels, and maintenance or repair of critical industrial assemblies. These fasteners provide long-lasting durability, oxidation resistance, and structural reliability where standard stainless steels may fail. In New Zealand’s industrial and fabrication sectors, 253MA fasteners are valued for producing high-performance components capable of withstanding extreme thermal and corrosive conditions while ensuring safety, reliability, and long-term service life.
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