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Yasin Fasteners, a company with its headquarters in Istanbul, Turkey, is a reputable producer and supplier of stainless steel 420 fasteners, renowned for its high hardness, high strength, and wear resistance. Produced from a martensitic stainless steel alloy, the fasteners are excellent for use where there is both mechanical strength and moderate corrosion resistance required. Yasin Fasteners provides an extensive range of stainless steel 420 fasteners—bolts, nuts, screws, and washers—manufactured to international standards and customized according to the requirements of automotive, machinery, tooling, and medical equipment industries.
Stainless steel 420 fasteners are usually in the range of 12–14% chromium with increased carbon content and can be heat-treated to attain superior hardness—up to 50 HRC or more. This martensitic microstructure gives 420 high tensile strength, good fatigue properties, and resistance to wear. Although 420 has less corrosion resistance than austenitic stainless steels, it is good enough for dry or mildly corrosive environments. 420 fasteners are also magnetic and can be polished to a bright finish for better appearance and corrosion resistance.
| 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 | Mn | Si | P | S | Cr |
| SS 420 | 0.15 max | 1.00 max | 1.00 max | 0.04 max | 0.03 max | 14.0 – 12.0 |
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness Rockwell B (HR B) max | Hardness Brinell (HB) max |
| 420 | 480 | 275 | 16 | 95 | 201 |
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 420 fasteners find application in pump and valve parts, surgical equipment, automotive hardware, and mechanical assemblies that need high surface hardness and strength. They are applicable in environments with excessive wear, friction, or mechanical stress but minimal chemical exposure. Their hardenability and precise machinability give them an edge as a choice for demanding engineering applications where performance and longevity are critical factors.
At Yasin Fasteners, we prioritize the quality and safety of our Stainless Steel 420 fasteners during packaging. Each fastener is meticulously inspected and individually wrapped in protective material to prevent damage. They are then packed in durable, clearly labeled boxes that provide detailed product information and quantities. Our packaging is designed to protect against environmental factors and physical impacts, ensuring that your high-performance fasteners arrive in excellent condition and are ready for immediate use.
Yasin Fasteners is a leading manufacturer and supplier of high-quality fasteners in Istanbul, Turkey, with over 8 years of experience serving global industries.
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