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Harsh Metalloys, located in Mumbai, India, has earned a solid reputation as a reliable manufacturer and supplier of top-notch Stainless Steel Bolts, perfect for fastening needs across a variety of industries. Crafted from high-quality stainless steel grades like 304, 316, 316L, and 904L, our bolts are celebrated for their outstanding strength, resistance to corrosion, and long-lasting durability. We offer a range of sizes, thread types, and head styles, all adhering to international standards such as ASTM A193 and ISO. Serving sectors like construction, automotive, marine, oil & gas, and chemical processing, Harsh Metalloys provides dependable fastening solutions that can handle tough environments and heavy loads.
Stainless Steel Bolts are typically made from austenitic stainless steels that contain 18–25% Chromium and 8–22% Nickel. Grades like 316 and 904L also include Molybdenum, which boosts their resistance to pitting and corrosion. These bolts showcase impressive tensile strengths from 485 to 750 MPa and yield strengths ranging between 170 to 500 MPa, depending on the grade and heat treatment. Their remarkable mechanical properties include toughness, ductility, and fatigue resistance. Thanks to stainless steel’s corrosion resistance, these bolts are built to last in high-temperature, marine, and chemically aggressive settings, making them perfect for critical industrial fastening tasks.
| ASTM/ASME Specifications | ASTM A193 / ASME SA 193, ASTM A194 / ASME SA 194 |
| Bolts, Studs Threads | UNC, METRIC, BSF, UNF, BSW or Custom |
| Head drive | Phillips, Six-Lobe, Phillips/Slot, Slotted |
| Stainless Steel Bolts | Hex Bolts, Flange Bolts, Square Bolts, T Bolts, Eye Bolts, U Bolts, Lag Bolts, Counter Sunk Bolts, J Bolts, Hex Head Bolts |
| Grade | AISI | Stainless Steel Bolts Chemical Composition (% maxima unless stated) | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| C | Si | Mn | P | S | Cr | Mo | Ni | Cu | ||||||
| A1 | SS 202 | 0.12 | 1.0 | 6.5 | 0.20 | 0.15-0.35 | 16,0 – 19,0 | 0.7 | 5,0 – 10,0 | 1.75-2.25 | ||||
| A2 | SS 304 | 0.08 | 1.0 | 2.0 | 0.05 | 0.03 | 15,0 – 20,0 | 0.0 | 8,0 – 19,0 | 4.0 | ||||
| A3 | SS 321 | 0.08 | 1.0 | 2.0 | 0.05 | 0.03 | 17,0 – 19,0 | 0.0 | 9,0 – 12,0 | 1.0 | ||||
| A4 | SS 316 | 0.08 | 1.0 | 2.0 | 0.05 | 0.03 | 16,0 – 18,5 | 2,0 – 3,0 | 10,0 – 15,0 | 4.0 | ||||
| C1 | SS 410 | 0.09-0.15 | 1.0 | 1.0 | 0.05 | 0.03 | 11,5 – 14,0 | – | 1 | – | ||||
| C3 | SS 431 | 0.17-0.25 | 1.0 | 1.0 | 0.04 | 0.03 | 16,0 – 18,0 | – | 1,5 – 2,5 | – | ||||
| C4 | SS 416 | 0.08-0.15 | 1.0 | 1.5 | 0.06 | 0.15-0.35 | 12,0 – 14,0 | 0.6 | 1 | – | ||||
| F1 | SS 430 | 0.12 | 1.0 | 1.0 | 0.04 | 0.03 | 15,0 – 18,0 | 0.0 | 1 | – | ||||
| Stainless Steel Bolts | Class | Tensile Stress Rm MPa (N/mm2) minimum | Yield Strength Rp 0.2 Mpa (N/mm2) minimum | AL Minimum Elongation | Diameter |
|---|---|---|---|---|---|
| Stainless Steel Bolts | 70 | 700 | 450 | 0.4d | =<M20 |
Contact us to get a quick quote for your requirement.
Harsh Metalloys provides superior quality with its stringent tests carried out on every material-hardness, chemical analysis through spectro analysis, PMI testing, flattening, micro and macro tests, pitting resistance, flaring, and IGC tests. It makes sure to test all of this so as to give out perfect performance. Along with the commitment to quality, we give all the important documents like commercial invoices, a packaging list including net and gross weights, box numbers, labels, and a Certificate of Origin legalized or attested by the Chamber of Commerce or Embassy. Besides, our Third-Party Inspection Certificate further complements our promise to achieve 100% client satisfaction in our Bolts Price List.
Yes, stainless steel bolts can be welded, but it depends on the grade of the steel. Proper welding techniques and filler materials are required to maintain strength and corrosion resistance.
Stainless steel bolts can be magnetic or non-magnetic, depending on the alloy. Ferritic and martensitic stainless steels are magnetic, while austenitic stainless steels are typically non-magnetic.
Yes, we provide ss bolts standard and customized dimensions and polishes to meet your specific project requirements. For more details mail us on sales@www.harshmetalloys.com
Yes, stainless steel bolts can be used for underground applications due to their corrosion resistance and durability. However, the specific grade should be selected based on environmental conditions.
Stainless Steel Bolts are widely used for assembling and securing components in industries such as construction, automotive manufacturing, shipbuilding, petrochemical, and food processing. They provide strong, corrosion-resistant fastening in outdoor and marine environments, chemical plants, and high-temperature applications. Commonly used in machinery, structural steel frameworks, pipelines, and equipment assembly, stainless steel bolts ensure safe and durable joints. Their resistance to rust and oxidation makes them essential for applications exposed to moisture, saltwater, and harsh chemicals. These bolts contribute to the reliability and safety of critical infrastructure and industrial equipment.
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