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Njabulo Stainless is a well-respected manufacturer and supplier located in Cape Town, South Africa, known for crafting top-notch Stainless Steel Bolts designed for exceptional strength, durability, and resistance to corrosion. With cutting-edge production facilities and rigorous quality control measures, the company ensures that its bolts meet international standards and perform reliably even in tough conditions. Njabulo Stainless provides a diverse selection of stainless steel bolts in various sizes, grades, and finishes, catering to industries like construction, automotive, marine, oil and gas, and power generation, where precision and performance are crucial.
Stainless Steel Bolts are primarily made from iron, chromium (10–20%), and nickel, with added elements like molybdenum, carbon, and manganese to enhance their corrosion resistance and mechanical strength. They boast high tensile strength (between 500 to 750 MPa), excellent ductility, and impressive toughness across a wide range of temperatures. These bolts also show outstanding resistance to oxidation, pitting, and stress corrosion cracking, ensuring they last even in harsh or corrosive environments.
| 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.
Njabulo Stainless 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@njabulostainless.co.za
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.
Across various industries, Stainless Steel Bolts are favored for their reliability, strength, and resistance to corrosion. In construction and infrastructure projects, they provide robust fastening for steel structures, bridges, and heavy machinery. The marine and offshore sectors rely on them for their ability to endure saltwater conditions. In automotive, chemical, and petrochemical facilities, they secure joints in high-temperature and corrosive settings. Moreover, stainless steel bolts are commonly used in food processing, power generation, and architectural projects, where hygiene, aesthetics, and long-lasting performance are vital.
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