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Gayatri Tubes is a popular manufacturer, supplier, wholesaler, and exporter of high quality Stainless Steel 304 / 304L / 304H Fasteners. We provide stainless steel fastener in all grades and we used international standard and specification. We manufacture fasteners in different diameters, dimensions, lengths, radius, and thicknesses. We supply stainless steel fastener in different shapes and sizes as per the client’s requirement. Stainless steel grade 304 is austenitic steel that has 18% chromium and 8% nickel alloy and used in many applications. Grade 304 behaves like nonmagnetic in the annealed condition and becomes hard by doing a cold working process. Grade 304 has many features like high ductility and good weldability. The grade 304L is an updated version of grade 304 and have low carbon alloy. The grade 304L is used in high-temperature application and tolerated 899 degrees C temperature. Stainless steel 304H has high carbon content and has tensile and yield strength.
The fastener is a device that is basically joint two or more devices or equipment together. Fastener is used to make nonpermanent joint means it can be easily removed without damages ant equipment and removed by hand or tool. There are many types of SS UNS S30400, S30403, S30409 Fasteners available such as SS threaded fastener, welded fastener, square fastener, socket set screw, hex head fastener, shoulder fastener, etc. SS fastener is available in different forms like bolts, screws, nut, and many more. The characteristics of SS 304 / 304 L / 304 H Fasteners are – good welding and forming, resistance to corrosion and oxidation, good strength and toughness, resistance to chloride stress and cracking, shows toughness at the lower temperature.
The application of 1.4301, 1.4306, 1.4948 Fasteners are- the stainless steel fastener is used in many industries such as marine industry, chemical and petrochemical, oil and gas industry, power generation, seawater application, shipbuilding, pulp and paper industry, and so many other industries. We conduct different types of tests like macro and micro test, chemical test, hardness test, toughness test, strength test, mechanical test, flaring test, flattening test, impact test, positive material test, eddy current test, etc.
| STANDARD | UNS | WERKSTOFF NR. | AFNOR | EN | JIS | BS | GOST |
| SS 304 | S30400 | 1.4301 | Z7CN18‐09 | X5CrNi18-10 | SUS 304 | 304S31 | 08Х18Н10 |
| SS 304L | S30403 | 1.4306 / 1.4307 | Z3CN18‐10 | X2CrNi18-9 / X2CrNi19-11 | SUS 304L | 3304S11 | 03Х18Н11 |
| SS 304H | S30409 | 1.4948 | - | - | - | - | - |
| Specifications | ASTM F593, F594, F1554 / ASME SF593, F594, F1554 |
| Standard | DIN, ASTM, BS and all International Standards |
| Nuts Size | M3 - M56 | 3/6" to 2" | Custom Sizes |
| Bolt / Screw Size | M3 - M56 | 3/6" to 2" | Custom Sizes |
| Washers Size | M3 - M56 | 3/6" to 2" | Custom Sizes |
| Machine Screws Size | M1.6 - M12 |
| Self Tapping Screw Size | No.2 - No. 14 |
| Length | 3 mm to 200 mm |
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N |
| SS 304 | 0.08 max | 2.0 max | 0.75 max | 0.045 max | 0.030 max | 18 – 20 | - | 8 – 11 | - | SS 304L | 0.035 max | 2.0 max | 1.0 max | 0.045 max | 0.03 max | 18 – 20 | - | 8 – 13 | - | SS 304H | 0.10 max | 2.0 max | 0.75 max | 0.045 max | 0.03 max | 18 – 20 | - | 8 – 10.5 | - |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 8.0 g/cm3 | 1400 °C (2550 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % |
