Stainless steel 321 fasteners stand as the top preference across industries due to their exceptional durability and strength. Renowned for their corrosion resistance and high-temperature tolerance, they excel in environments subjected to extreme climates or frequent exposure to corrosive substances like water. SS 321H Fasteners find versatile applications ranging from aircraft parts and exhaust systems to gas turbines and medical instruments, showcasing their reliability and adaptability across diverse sectors.
321 Stainless Steel Fasteners boast a diverse range of types, including bolts, nuts, screws, washers, pins, and rods, each offering distinct advantages tailored to specific applications. Bolts ensure a secure connection between components, while washers provide additional support and stability when paired with bolts or nuts. SS 321 Fasteners come in various forms such as Stainless Steel 321 Washers and Stainless Steel 321H Stud Bolts, catering to a multitude of needs. Fasteners are particularly suited for applications demanding precise fits, whereas rods excel in structural joints requiring uniformity and robustness.
Standard SS 321 Fasteners specifications as per Fasteners manufacturers.
| Material | Stainless Steel 321 |
| Specification | IS/BS/ASTM |
| Standards | ASTM / ASME - A/ SA 193 |
| Size | 3 mm to 200 mm |
| Length | M02 to M30 |
Each SS 321 Fasteners have unique design each of them are used in specific applications. Some of them are mentioned below.
Note that this chart includes only some of the most common sizes of SS 321 Bolt. There are many other sizes available as well, and some applications may require custom sizes or special configurations.
Chromium (Cr)
17 – 19
Nickel (Ni)
9 – 12
Manganese (Mn)
2% max
Silicon (Si)
1.0% max
Carbon (C)
0.08 max
Phosphorus (P)
0.045% max
Sulfur (S)
0.03% max
Ti
5(C+N) – 0.70 max
| Density | 7.9 g/cm3 |
| Melting Point | 1402 °C (2555 °F) |
| Tensile Strength | Psi – 75000 , MPa – 515 |
| Yield Strength (0.2%Offset) | Psi – 30000 , MPa – 205 |
| Elongation | 40% |
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