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Amin Fasteners, located in Safat, Kuwait, stands out as a top manufacturer and supplier, renowned for providing high-quality fastening solutions across various industrial sectors. Among its extensive product lineup, the Stainless Steel 321/321H Bolts are particularly prized for their remarkable heat resistance, durability, and structural reliability. Crafted with cutting-edge technology and rigorous quality standards, these bolts excel in high-temperature and corrosive settings. Amin Fasteners serves a range of industries, including petrochemical, aerospace, power generation, and oil & gas, delivering products that align with global specifications. With a strong commitment to excellence, the company remains a trusted provider of robust fastening components.
Stainless Steel 321/321H Bolts are a type of titanium-stabilized austenitic stainless steel, enriched with chromium and nickel, which grants them outstanding resistance to intergranular corrosion. The 321 grade is known for its excellent stability at high temperatures, while the 321H variant, with its higher carbon content, boosts high-temperature strength and creep resistance. These bolts showcase impressive tensile and yield strength, reliable oxidation resistance, and exceptional performance even at temperatures reaching 900°C. The addition of titanium helps prevent carbide precipitation during welding, ensuring the bolts maintain their structural integrity. Together, SS 321/321H deliver durable, heat-resistant fastening solutions for demanding industrial applications.
| Specifications | : | ASTM A 193 ASME SA 193 |
| Standard | : | DIN, ASTM, BS and all International Standards |
| Length | : | 3 mm to 200 mm |
| Size | : | M3 – M56 | 3/6″ to 2″ | Custom Sizes |
| Type | : | Hex Head Bolts, Square Bolts, U bolts, Eye bolts, T bolt, Hex Bolt, Lag Bolts, Counter sunk Bolts, Hex Head nuts, Square nuts, Lock nuts, Eye nuts, wing nuts, T nuts, Panel Nuts, Coupling Nuts, Dome nuts, Acorn Nuts. |
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
| 347 | min. | – | – | – | – | – | 17.0 | 2.00 | 9.0 | – |
| max. | 0.08 | 2.0 | 1.00 | 0.045 | 0.030 | 20.0 | 3.00 | 13.0 | – | |
| 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 | ||||
| 347 | 515 | 205 | 40 | 95 | 201 |
To satisfy our clients needs by providing high quality products at competitive price as per the schedule and to maintain long term relationship with our clients.
Stainless Steel 321/321H Bolts find extensive use in industries that demand reliable performance under high temperatures and resistance to oxidation. They are perfect for aerospace systems, exhaust manifolds, furnace components, and thermal processing equipment. In the petrochemical and refinery sectors, these bolts are essential for pipelines, heat exchangers, and high-temperature reactors, ensuring safety and efficiency in critical operations. Their ability to withstand harsh conditions makes them a go-to choice for engineers and manufacturers looking for dependable fastening solutions in challenging environments.
At Amin Fasteners we ensure the highest standards in packaging for our Stainless Steel 321/321H bolts. Each bolt is thoroughly inspected and protectively wrapped to prevent damage during transport. They are then placed in tightly labeled boxes with product details and detailed quantities. Our packaging products are designed to be environmentally and physically friendly, ensuring that your high-performance bolts arrive in optimal condition and ready for immediate use.
Amin Fasteners is a leading manufacturer and supplier of high-quality fasteners in Safat, Kuwait, with over 8 years of experience serving global industries.
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