Unimix Metal Cooperation is a prominent and leading manufacturer, supplier, and exporter of precision-engineered Stainless Steel 347/347H Fasteners. Stabilized with Tantalum and Niobium, these fasteners offer excellent high-temperature serviceability.
Our 347 Stainless Steel Shoulder Screws are widely used in corrosive environments where temperatures can exceed 800º F (425º C). The SS 347H Anchor Screws are hardware devices that can be mechanically fastened or clamped, either permanently or temporarily. The mechanical properties of Stainless Steel 347 Blind Rivets undergoing these heat treatments are detailed in the Mechanical Properties section.
We also supply SS 347/347H Socket Head Cap Screws, austenitic stainless steel products containing columbium, which resist carbide precipitation and intergranular corrosion. Additionally, we manufacture a variety of Stainless Steel 347H Hex Head Screws, commonly used in cars, trucks, cranes, bridges, roller coasters, and other structures designed to handle significant stress.
Grade | Stainless Steel 347/347H | SS 347/347H | UNS S34700/S34709 |
Specification | IS, BS, ASTM, ASME |
Standard | ASTM A193 ASME SA193 |
Length | 3mm to 200mm |
Size | 3/6″ to 2″, M3 – M56, Custom Sizes |
Form | Screw, Nuts, Bolts, Washers |
Application | Automobile Industry, Engineering, Oil & Gas, Heat exchanger and condenser, Refineries & Petrochemicals, Power plants, Desalination Plants, Shipbuilding |
Grade | UNS No | Old British | Euronorm | Swedish SS | Japanese JIS | ||
BS | En | No | Name | ||||
347 | S34700 | – | X6CrNiNb18-10 | 1.4550 | – | – | – |
347H | S34709 | – | – | 1.4961 | – | – | – |
Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
Rockwell B (HR B) max | Brinell (HB) max | ||||
347 | 515 | 205 | 40 | 95 | 201 |
347H | 515 | 205 | 40 | 92 | 201 |
Grade | Density (kg/m3) | Elastic Modulus (GPa) | Mean Coefficient of Thermal Expansion (m/m/0C) | Thermal Conductivity (W/m.K) | Specific Heat 0-1000C (J/kg.K) | Electrical Resistivity (n.m) | |||
0-1000C | 0-3150C | 0-5380C | at 1000C | at 5000C | |||||
347 | 8000 | 193 | 17.2 | 17.8 | 18.4 | 16.2 | 21.5 | 500 | 720 |
347H | 8000 | 193 | 17.2 | 17.8 | 18.4 | 16.2 | 21.5 | 500 | 720 |
Stainless Steel 347/347H Industrial Screws | Hex Head Screw, Socket Head Cap Screw, Socket Set Screws, Anchor Screw, Blind Rivet, Concrete screw, Threaded Screw, Steel Shoulder Screw, Panel Screw, Machine Screw |
Stainless Steel 347/347H Industrial Washers | Plain Washer, Plain Big & Small Washers, Spring Lock Washers, Spring Washers Heavy Duty, Tooth Washers, Star Washers, Tab Washer With One & Two Tab |
Stainless Steel 347/347H Industrial Nuts | Hexagon Nuts, Hexagon Coupling Nuts, Hexagon Thin Nuts, Square Nuts, Hexagon Castle Nuts, Self Locking Nut, Hexagon Domed Cap Nuts |
Stainless Steel 347/347H Industrial Bolts | Stud Bolts, Hex Head Bolts, Socket Hexagon Head Screw Anchor Bolts, U-Bolts, J Bolts, Mushroom Head Square Neck Bolts, T- Head Bolts, Wing Screw Bolts, Eye Bolts, Eye Bolts, Foundation Bolts, Structural Bolts, Bolts, H Bolts |
347/347H Steel Fasteners | Stainless Steel 347 Bolts | SS 347H Mushroom Head Square Neck Bolts |
Steel S34700 Square Nut | Stainless Steel 347H Tab Washer | Steel 347 Pan Head Screw |
Stainless Steel 347/347H U Bolts | SS 347/347H Eye Bolts | Steel S34709 Cap Screw |
347 SS Pan Head Screw | Steel 347H Foundation Bolts | Stainless Steel UNS S34709 Panel Screw |
Steel 347 Hexagon Thin Nuts | Stainless Steel 347H Hex Head Bolts | Stainless Steel S34700 Foundation Bolts |
Stainless Steel 347/347H Stud Bolts | Steel 347/347H Machine Screws | SS 347/347H Structural Bolts |
Stainless Steel UNS S34700 Hexagon Nuts | Steel 347/347H T- Head Bolts | UNS S34709 Steel Spring Lock Washers |
Unimix Metal Corporate, under the leadership and mentoring of intellectual individuals, is currently one of the Manufacturer, Supplier, Stockiest, Importer and Exporter of Stainless Steel , Carbon Steel , Alloy Steel , High Nickel Alloys , Special Alloys , Aluminium Alloys , Copper Nickel , Titanium Alloys , Duplex & Super Duplex , Tantalum , Abrasion Resistant Steel, Hadfield Manganese Steel , Corten Steel , High Tensile , Quenched & Tempered Steel , Armour Steel , etc in Forms of Pipes , Tubes , Plates , Round Bars and Fittings.
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