Njabulo Stainless is a reliable manufacturer and supplier of Stainless Steel 317 Bolts based in Cape Town, South Africa. Their products are celebrated for their exceptional strength, corrosion resistance, and dependability. Crafted from high-quality austenitic stainless steel with molybdenum, these bolts are designed to withstand harsh chemical and marine environments. Perfect for demanding applications, Stainless Steel 317 Bolts offer outstanding mechanical and thermal stability. Njabulo Stainless prides itself on precision engineering, ensuring dimensional accuracy and consistent performance, making their bolts a top choice in the industrial, construction, and marine sectors across South Africa.
Stainless Steel 317 Bolts are composed of chromium (18–20%), nickel (11–15%), and molybdenum (3–4%) as their primary alloying elements, which provide remarkable resistance to corrosion and oxidation. Thanks to their austenitic structure, these bolts maintain excellent toughness, even in freezing temperatures. They boast a tensile strength of about 515 MPa, a yield strength of 205 MPa, and an elongation of roughly 35%. With a density of around 8.0 g/cm³ and a melting point close to 1370°C, the well-balanced chemical composition and mechanical stability of SS 317 make these bolts perfect for challenging industrial and chemical applications.
Material | Specification | Standards | Size | Length |
Stainless Steel 317 Bolts | ASTM, ASME and API | ASTM B 193 / ASME SB 193 | M02 to M30 | 3 mm To 200 mm |
| Element | SS 317 |
| 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 317 |
| 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 317 bolts are highly corrosion-resistant fasteners, ideal for marine and chemical environments. They offer high strength and durability, suitable for demanding applications in industries exposed to harsh conditions.
Custom Stainless Steel 317 Hex Bolt features a custom-made fastener with a square head, providing excellent corrosion resistance and strength. Ideal for special applications in marine and chemical environments.
Stainless Steel 317 Leg Bolt is a highly durable, corrosion resistant material with threaded threads and a flat leg design. Increases durability in marine and chemical environments.
Stainless Steel 317 expansion anchor bolt secures fixtures in concrete or masonry with superior corrosion resistance. Ideal for marine and chemical environments, it ensures durability and strong hold in harsh conditions.
Stainless Steel 317 hex flange head bolt features a hexagonal head with an integrated flange, offering secure fastening and load distribution. It provides excellent corrosion resistance for harsh environments.
Stainless Steel 317 full threaded bolts have a fully threaded shaft for consistent engagement. They offer high strength and excellent corrosion resistance, making them suitable for demanding applications in harsh environments.
We give a priority to delivering a seamless customer experience with Stainless Steel 317 Bolts. We provide comprehensive documentation, including a commercial invoice, packaging list, heat treatment chart, and NABL-approved lab test report. Additional certifications like MTC, PMI Test Certificate, radiography test reports, and Third-Party Inspection Certificates ensure the highest standards of quality and reliability for our products.
Stainless Steel 317 Bolts find extensive use in industries where strength and corrosion resistance are paramount. They are ideal for chemical processing, marine applications, paper and pulp mills, food processing, and pharmaceutical facilities. These bolts excel in environments exposed to acids, chlorides, and high temperatures. Common applications include heat exchangers, pressure vessels, condensers, and industrial piping systems. With their impressive durability and resistance to pitting and crevice corrosion, Stainless Steel 317 Bolts from Njabulo Stainless provide secure fastening and long-lasting performance.
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