Harsh Metalloys is a reputable manufacturer and supplier of Stainless Steel 316 Nuts based in Mumbai, India, offering high-strength fastening solutions for demanding applications. These nuts are fabricated using premium-grade SS 316, an austenitic stainless steel known for its excellent corrosion resistance, particularly against chlorides and acidic environments. With superior durability, tensile strength, and oxidation resistance, SS 316 Nuts are ideal for both indoor and outdoor use in industrial and marine settings. Our SS 316 Nuts are available in various types and sizes including hex nuts, lock nuts, cap nuts, and flange nuts, conforming to international standards such as ASTM and ASME.
Stainless Steel 316 Nuts are composed of 16–18% Chromium, 10–14% Nickel, and 2–3% Molybdenum, enhancing resistance to corrosion and pitting. They offer a tensile strength of around 515 MPa and a yield strength of 205 MPa, making them suitable for high-stress applications. With a melting point of 1400°C and excellent workability, SS 316 maintains structural integrity in extreme temperatures and aggressive chemical environments. These nuts exhibit superior resistance to atmospheric corrosion, as well as to many organic and inorganic chemicals
| Specifications | IS, BS, ASTM |
| Standard | ASTM / ASME – A/ SA 193 |
| Length | 3 mm to 200 mm |
| Size | M02 to M33 |
| Type | Hex Nuts, Dome Nuts, Hex Machine Screw Nuts, Hex Lock Nuts Nylon Insert, Hex Jam Nuts, Hex Jam Nylon Lock Nuts, Heavy Hex Nuts, Wing Nuts, Cap Nuts, Acorn Nuts, Square Nuts, K-Lock Nuts, Prevailing Torque Lock Nuts, Top Lock Nuts, Two-Way Reversible Lock Nuts, Pin-Lock Nuts, T-Nuts, Coupling Nuts, T-Slot Nuts, Castle Nuts, Flange Nuts Serrated, Machine Hex Nuts, Finished Hex Nuts, Forged Eye Nut, Rivet Nuts, Slotted Hex Nut, Acme Hex Nuts, Nylock Nuts, Anco Locknuts, Flexloc Nuts, Reversible Locknuts, Panel Nut, Poly Nut, Conelock Nut, Self Clinching Nuts, Domed Cap Nuts, Imperial Thread Nuts, Imperial Thread Nylock Nuts, Sleeve Nuts, Thin Nuts, Weld Nuts, High Tensile Nuts, Cage Nuts, Security Nuts, Imperial Nuts, Industrial Nuts, Miscellaneous Nuts, Insert Nuts, Knurled Nuts, Round Nuts. |
| Element | SS 316 |
| Ni | 10.0 – 14.0 |
| C | 0.08 |
| Mn | 2.0 max |
| P | 0.045 max |
| S | 0.03 max |
| Si | 0.75 max |
| Cr | 16.0 – 18.0 |
| Mo | 2.00 – 3.00 |
| N | 0.10 |
| Element | SS 316 |
| Tensile Strength (MPa) min | 515 |
| Yield Strength 0.2% Proof (MPa) min | 205 |
| Elongation (% in 50mm) min | 40 |
| Rockwell B (HR B) max Hardness | 95 |
| Brinell (HB) max Hardness | 217 |
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A corrosion-resistant product, Stainless Steel 316 nuts come in sizes from M6 to M64. Known for their excellent resistance to marine and chemical environments, they are ideal for high-temperature and industrial applications.
A corrosion-resistant product, Stainless Steel 316 coupling nuts, available in sizes from M6 to M36, securely join two male threads. They are perfect for use in corrosive environments and high-stress applications.
A corrosion-resistant product, Stainless Steel 316 nylon insert nuts, or lock nuts, are available in sizes from M3 to M36. The nylon insert prevents loosening, making them ideal for high-vibration and corrosive environments.
A corrosion-resistant product, Stainless Steel 316 flange hex nuts feature an integrated flange and come in sizes from M5 to M20. They offer enhanced load distribution and stability in marine and chemical environments.
A corrosion-resistant product, Stainless Steel 316 heavy hex nuts are available in sizes from M10 to M48. Their increased thickness provides superior strength and durability, suitable for heavy-duty and high-temperature applications.
A corrosion-resistant product, Stainless Steel 316 square nuts provide a larger contact surface and come in sizes from M6 to M30. They are ideal for high-stress applications requiring stability and resistance to harsh conditions.
Our team is very careful in packing Stainless Steel 316 Nuts so that it is well protected. The best materials that are up to industry standards are used for packing. Mainly strong wooden boxes, tough pallets, and some eco-friendly packing materials are used. This careful packing prevents dirt or dust from contaminating the product, hence maintaining its quality. In addition, our packing protects the product during transit and prevents damage or contamination. Attention to detail and strict quality control actually are reflections of the desire of this company to bring the very best product into its customers.
SS 316 Nuts are extensively used across industries such as chemical processing, pharmaceuticals, petrochemicals, marine, food processing, and construction. Their high corrosion resistance makes them especially suitable for saline and coastal environments, as well as in equipment that handles acidic and chloride-rich substances. Common applications include pressure vessels, heat exchangers, piping systems, pumps, and valves. They are also used in offshore rigs, shipbuilding, and water treatment plants. Harsh Metalloys ensures that each nut is precision-engineered to offer long-term performance, safety, and reliability under dynamic loads and harsh environmental conditions.
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