Njabulo Stainless, based in Cape Town, South Africa, is a trusted manufacturer and supplier of Stainless Steel 446 Bolts. These high-quality bolts are designed for durable, reliable, and corrosion-resistant fastening in industrial, structural, and mechanical applications. Njabulo Stainless ensures precision threading, smooth surfaces, and uniform dimensions, providing secure and long-lasting connections. Stainless Steel 446 bolts are widely used in chemical, petrochemical, marine, automotive, and power generation industries, where high-temperature resistance, excellent corrosion resistance, and mechanical strength are essential for safe and efficient operation.
Stainless Steel 446 Bolts are made from ferritic stainless steel 446, containing chromium (23–27%) and very low carbon content. This composition provides excellent corrosion resistance, high-temperature resistance, and good mechanical strength. Mechanically, 446 bolts offer high tensile strength, hardness, and dimensional stability, making them suitable for demanding industrial and structural applications. Precision manufacturing ensures smooth threads and accurate dimensions, allowing secure fastening. These properties make 446 bolts ideal for applications where durability, corrosion resistance, and high-temperature performance are critical.
|
Material |
Specification |
Standards |
Size |
Length |
|
Stainless Steel 446 Bolts |
ASTM, ASME and API |
ASTM B 193 / ASME SB 193 |
M02 to M30 |
3 mm To 200 mm |
| Element | SS 446 |
| 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 446 |
| 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 446 bolts are high-temperature, corrosion-resistant fasteners with excellent oxidation resistance. They are ideal for extreme environments, such as marine and industrial applications, providing durability and strength.
Custom Stainless Steel 446 Hex Bolt is a tailored, high heat resistance fastener with a hexagonal head, providing the excellent durability and corrosion resistance required by industrial and marine applications
Stainless Steel 446 Leg Bolt is a corrosion-resistant fastener with a threaded shaft and thin, leg-like shape, ideal for secure, tight connections in high-temperature challenging mechanical environments
Stainless Steel 446 Expansion Anchor Bolt is a corrosion-resistant fastener designed to secure materials on concrete or masonry, expand during installation and maintain strong and durable strength under extreme conditions in
Stainless Steel 446 hex flange head bolt features a hexagonal head with an integrated flange, providing secure fastening and even load distribution in high-temperature, corrosive environments, enhancing durability and reliability.
Stainless Steel 446 full threaded bolts have a completely threaded shaft, offering consistent engagement and grip. They excel in high-temperature and corrosive environments, providing durability and strength for demanding applications.
Each of the Stainless Steel 446 Bolts is packed with the highest level of care, using only the best quality raw materials to prevent them from rust and other defects arising during the shipping process. Our concern on customer satisfaction, it is important for us that a delivery is on-time through the most efficient possible modes of transport. All the related documents will also be handed-over to our clients on the day of delivery to ensure total transparency and reliability.
Stainless Steel 446 Bolts are widely used in chemical processing plants, petrochemical industries, marine environments, power generation, and industrial machinery. They are ideal for fastening pipelines, valves, pumps, pressure vessels, and structural components exposed to high stress, corrosive conditions, or elevated temperatures. Their superior corrosion and heat resistance make them suitable for industrial equipment, offshore platforms, and high-temperature piping systems. In construction and manufacturing, 446 bolts provide secure, durable, and leak-proof fastening. Overall, Stainless Steel 446 bolts deliver strength, reliability, and excellent corrosion and heat resistance, making them essential for demanding industrial and mechanical applications.







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