Njabulo Stainless is a reliable manufacturer and supplier of high-performance Stainless Steel 17-4 PH Fasteners based in Cape Town, South Africa. With a strong commitment to quality, precision, and customer satisfaction, Njabulo Stainless provides fasteners that are tailored to meet the rigorous demands of various industries. The company utilizes cutting-edge manufacturing techniques along with top-notch raw materials to create fasteners renowned for their durability, strength, and resistance to corrosion. Catering to both local and international clients, Njabulo Stainless prides itself on innovation, timely delivery, and outstanding service, establishing itself as a leading name in the stainless steel fastening solutions market in South Africa.
The Stainless Steel 17-4 PH Fasteners produced by Njabulo Stainless are crafted from a precipitation-hardening martensitic stainless steel alloy that contains around 17% chromium and 4% nickel, along with copper and niobium. This distinctive composition provides an impressive blend of high strength, hardness, and corrosion resistance. These fasteners can reach tensile strengths of up to 1100 MPa and maintain excellent mechanical properties even at elevated temperatures. Heat treatment further boosts their performance, making them ideal for precision-critical applications across a range of industries, including aerospace, petrochemical, and marine sectors.
| Specifications | ASTM A 193 / ASME SA 193 |
| Standard | DIN, ISO ,JIS ,GB, IS, BS, ASTM and all International Standards |
| Size | M3 – M100 | 3/6″ – 4″ | Custom Sizes |
| Fasteners Length | 3 mm – 200 mm | Custom Sizes |
| Nuts Size | M3 – M56 | 3/6″ to 2″ | Custom Sizes |
| Washers Size | M3 – M56 | 3/6″ to 2″ | Custom Sizes |
| Dimensions | DIN 931, 933, 934, 7991, 976, 125, ASME B18.2.1, B18.3 |
| Threads available | UNF, BSW, BSF, METRIC, UNC, or as required |
| Threads Configuration | ASME B1.1 2A/3A – 2B/3B Inch Unified Threads and B1.13M 6h-6G Metric Coarse Threads |
| Form | Hex, Threading, Square, Round as per Gauge Etc. |
| Head | Hex, Square, Round, Hex flange, Flat, T-head & Triangular etc. |
| Neck type | Hex, Square, Triangular, Oval & Knurled etc. |
| Surface Coating | Black Oxide, Cadmium, Galvanized, Teflon, Xylan, Zinc, Others Upon Request |
| Manufacturing Process | Wire Drawing, Cold Heading, Insert tapping, Heat Treatment, Surface Plating, Inspection, Packing. |
| Grade | C | Cb+Ta | Cr | Cu | Fe | Mn | Ni | P | S | Si |
| SS 17-4 PH | 0.07 max | 0.15-0.45 | 15.00-17.50 | 3.00-5.00 | Bal | 1.0 max | 3.0-5.0 | 0.40 max | 0.03 max | 1.0 max |
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Stainless Steel 17-4 PH Nuts Known for excellent corrosion resistance, Stainless Steel 17-4 PH nuts are typically used in aerospace and industrial applications. They come in various sizes. Usually, the dimensions are M2 to M36 and conform to standard nut sizes.
17-4 PH stud bolts are ideal for high-stress environments and offer high corrosion resistance. Depending on application requirements, they are available in sizes ranging from M4 to M30, with lengths varying from 20mm to 1000mm.
These bolts provide strong corrosion resistance and are commonly used in structural applications. Available in sizes from M5 to M36, with standard lengths ranging from 10mm to 200mm, they meet various industrial and military standards.
Stainless Steel 17-4 PH threaded rods Known for excellent corrosion resistance, 17-4 PH threaded rods are used in high-strength applications. They are available in diameters from M6 to M36 and lengths from 100mm to 3000mm, suitable for various structural needs.
Offering high corrosion resistance, 17-4 PH screws are suitable for harsh environments. They come in sizes from M2 to M16, with lengths from 6mm to 100mm, meeting diverse application standards.
These washers are highly corrosion-resistant, making them ideal for marine and aerospace applications. Available in diameters from M3 to M36, they come in various thicknesses to fit different bolt sizes.
Stainless Steel 17-4 PH Fasteners are rigorously tested by us for their quality and reliability. The tests involve verification of the material composition, mechanical property checks, and assessments of the dimensions. Also third-party inspections can be offered for extra assurance when needed. With a strong focus on quality and efficiency we ensure swift delivery of our fasteners according to different industry requirements keeping the highest standards of performance and customer satisfaction.
Njabulo Stainless’s Stainless Steel 17-4 PH Fasteners are extensively used in challenging environments where strength, corrosion resistance, and reliability are paramount. These fasteners are perfect for aerospace components, high-performance automotive parts, marine hardware, nuclear waste containment, and chemical processing equipment. Their exceptional mechanical strength and resistance to stress corrosion cracking make them suitable for offshore platforms and power generation plants. In Cape Town and beyond, industries trust Njabulo Stainless for fasteners that guarantee structural integrity and a long service life, even in harsh marine and high-temperature industrial settings.
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