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MUKAU FASTENERS is a leading manufacturer and supplier based in Kinshasa, Congo, specializing in high-quality Stainless Steel 17-4 PH Bolts. These bolts are crafted for outstanding strength, corrosion resistance, and durability, making them perfect for tough industrial settings. Made from precipitation-hardening stainless steel, they offer excellent mechanical stability, impressive tensile strength, and dependable fastening performance. MUKAU FASTENERS guarantees precision in manufacturing and adherence to international standards, providing 17-4 PH Bolts that are perfect for aerospace, petrochemical, marine, and power generation applications, where secure fastening and long-term reliability are essential. These bolts excel under stress, heat, and corrosive environments.
Stainless Steel 17-4 PH Bolts are composed of about 17–19% chromium, 3–5% nickel, 3–5% copper, and 0.07% carbon, with small amounts of niobium or tantalum added for precipitation hardening. They boast a tensile strength between 930 and 1,200 MPa, along with high yield strength, excellent hardness, and fatigue resistance. These bolts maintain their shape, resist corrosion, and ensure mechanical reliability even in high-stress and high-temperature situations. The precipitation-hardening properties allow for customized mechanical performance, making 17-4 PH Bolts perfect for demanding structural, industrial, and high-performance applications.
| 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 |
| Bolts 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 |
| 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 |
To satisfy our clients needs by providing high quality products at competitive price as per the schedule and to maintain long term relationship with our clients.
Stainless Steel 17-4 PH Bolts find extensive use in aerospace, chemical and petrochemical facilities, marine engineering, power generation, and heavy-duty industrial machinery, thanks to their exceptional strength and corrosion resistance. They are ideal for securing critical components, structural assemblies, pressure vessels, and machinery that operate under high stress or temperature, ensuring reliable connections. The 17-4 PH grade guarantees long-lasting durability, heat resistance, and low maintenance. MUKAU FASTENERS’ 17-4 PH Bolts are designed to meet the rigorous demands of various industries.
Stainless steel 17-4 PH bolts undergo rigorous quality control to ensure exceptional performance. These tests include hardness testing, chemical analysis by spectroanalysis, material quality determination by PMI testing, tensile strength testing, impact testing, and fatigue resistance testing in addition to evaluating the corrosion resistance of each bolt and corrosion resistance. This exhaustive inspection ensures that our 17-4 PH bolts meet the highest industry standards for strength, durability and reliability.
Mukau Fasteners is a leading manufacturer and supplier of high-quality fasteners in Kinshasa, Congo, with over 8 years of experience serving global industries.
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