Niazi Stainless, from its base in Manama, Bahrain, stands as a reliable partner for industrial fastener needs, specializing in the supply of Stainless Steel 317L bolts. We understand that the integrity of your projects hinges on the quality of their smallest components. That’s why we focus on providing bolts that offer exceptional resilience, particularly in challenging environments where corrosion is a constant threat. Our commitment is to deliver not just a product, but a component you can trust for long-term performance and durability.
The strength of 317L bolts comes from a carefully balanced composition, which includes higher levels of chromium, nickel, and a significant addition of molybdenum. This specific mix gives the alloy its notable mechanical properties, including excellent tensile strength and good ductility. What truly sets it apart, however, is its superior resistance to corrosion, especially against chlorides and acids, making it significantly more robust than common 304 or even 316 grades. This ensures the bolts maintain their integrity under sustained stress.
Material | Specification | Standards | Size | Length |
Stainless Steel 317L Bolts | ASTM, ASME and API | ASTM B 193 / ASME SB 193 | M02 to M30 | 3 mm To 200 mm |
| Element | SS 317L |
| 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 317L |
| 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 317L bolts are high-corrosion-resistant fasteners with excellent durability and strength. Ideal for harsh environments, they offer superior resistance to pitting and crevice corrosion, suitable for marine and chemical applications.
Custom Stainless Steel 317L hex bolt is a tailor-made fastener with a hexagonal head, presenting excessive corrosion resistance and durability. It’s best for specialised commercial applications in harsh, corrosive environments.
Stainless Steel 317L leg bolt is a high-corrosion-resistant fastener with a threaded shaft and flat, leg-like design. It offers strong, reliable connections in marine, chemical, and high-stress applications.
Stainless Steel 317L expansion anchor bolt is a corrosion-resistant fastener designed for securing objects in concrete or masonry. It expands upon installation, providing a strong, stable hold in harsh environments.
Stainless Steel 317L hex flange head bolt features a hexagonal head with an integrated flange, offering secure fastening and even load distribution. It provides excellent corrosion resistance for demanding applications.
Stainless Steel 317L full threaded bolts have a completely threaded shaft, providing consistent engagement and grip. They offer high corrosion resistance, strength, and durability, suitable for severe environments and industrial applications.
Each and every Stainless Steel 317L-bolt is packaged using finest raw materials to restrain it from rust and damage during shipping. We on-time deliver products through efficient means of transport to cater to our clients. Every product-related document is given to our clients along with the delivery to ensure that there is smooth functionality.
These bolts are indispensable in industries where failure is not an option. You will find them securing critical components in chemical processing plants, oil and gas refineries, and pollution control scrubbers, where they face highly corrosive acids and halides. They are also the preferred choice for constructing marine equipment, pharmaceutical manufacturing facilities, and in the pulp and paper industry. Essentially, any application demanding unwavering resistance to aggressive chemicals and pitting relies on the proven performance of 317L fasteners for a secure and lasting hold.
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