Based in Delhi, India, Harshita Stainless is a reputable producer and supplier of 321H stainless steel bolts, providing high-performance fasteners made for corrosive and high-temperature conditions. These bolts are extensively utilised in sectors like petrochemical, power generation, and oil and gas because of their remarkable stability and strength at high temperatures. Harshita Stainless guarantees that every product has precise threading, exceptional durability, and outstanding oxidation resistance because it is manufactured in accordance with international standards. The business provides specialised fastening solutions that support vital operations under the most demanding industrial conditions, with an emphasis on quality, dependability, and prompt delivery.
Chromium (17–20%), nickel (9–13%), and a higher carbon content (0.04–0.10%) make up stainless steel 321H bolts. Titanium is added for stability. Their resistance to oxidation and intergranular corrosion at high temperatures is improved by this composition. The bolts have an elongation of 35–40%, a yield strength of 205 MPa, and a tensile strength of roughly 515 MPa. Stainless steel 321H is perfect for fastening applications in environments with high temperatures and pressures because it maintains its mechanical strength and creep resistance even after extended exposure to high heat.
Material | Specification | Standards | Size | Length |
Stainless Steel 321H Bolts | ASTM, ASME and API | ASTM B 193 / ASME SB 193 | M02 to M30 | 3 mm To 200 mm |
| Element | SS 321H |
| Tensile Strength (MPa) min | 480 |
| Yield Strength 0.2% Proof (MPa) min | 275 |
| Elongation (% in 50mm) min | 16 |
| Rockwell B (HR B) max Hardness | 95 |
| Brinell (HB) max Hardness | 201 |
| Element | SS 321H |
| Ni | 0.75 |
| C | 0.15 |
| Mn | 1.00 max |
| P | 0.04 max |
| S | 0.03 max |
| Si | 1.00 max |
| Cr | 11.5 – 13.5 |
| Mo | – |
| N | – |
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Stainless Steel 321H bolts are high-performance fasteners designed for high-temperature environments, offering exceptional resistance to oxidation and corrosion. Ideal for aerospace, chemical processing, and industrial applications requiring durability and reliability.
Custom Stainless Steel 321H Hex Bolt is a custom designed fastener with a hexagonal head, designed for high temperature applications. It provides excellent corrosion resistance and strength, ideal for industrial, aerodynamic and aerospace applications.
Stainless Steel 321H leg bolt features a unique leg design for enhanced stability and support. It offers superior high-temperature and corrosion resistance, making it ideal for demanding industrial and aerospace applications.
Stainless Steel 321H expansion anchor bolt is designed for anchoring in concrete or masonry, providing exceptional high-temperature and corrosion resistance. It expands upon installation for secure, reliable holding in harsh environments.
Stainless Steel 321H Hex Flange Head Bolt connects the hexagonal head with an integrated flange, providing superior thermal corrosion resistance. Ideal for safe clamping in industrial and aerospace applications.
Stainless Steel 321H full threaded bolts feature continuous threading and excellent resistance to high temperatures and corrosion. They are ideal for securing components in demanding industrial, aerospace, and chemical processing environments.
We perform several tough tests to guarantee the reliability and performance of our products. Our Stainless Steel 321H Bolts are checked stringently for quality, and we also offer third-party inspection for added assurance. Our logistics are efficient enough to ensure that our delivery is prompt and on time to meet the demands of our clients without delay.
In industries where resistance to corrosion and high temperatures are essential, stainless steel 321H bolts are widely used. They are utilised in heat exchangers, high-pressure piping systems, and refinery equipment in the petrochemical and oil and gas industries. Because of their thermal stability, power plants use them in exhaust systems, boilers, and turbines. They are used in offshore installations, structural assemblies, and engine components in the marine and aerospace industries. These bolts can also be used on chemical processing equipment and furnace parts. They are perfect for demanding fastening applications because of their long service life, resilience to carbide precipitation, and durability.
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