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Stainless Steel 347/347H Bolts are austenitic stainless steel bolts that have been columbium stabilized. These have high corrosion resistance. These bolts are also effective at high temperatures, reducing the amount of carbide precipitation that can occur. These bolts can also be formed very easily. Weldability is a feature of 347 Stainless Steel bolts. 347 stainless steel contains no more than 0.08 percent carbon, whereas 347H stainless steel contains between 0.04 and 0.10 percent carbon.

These bolts can tolerate temperatures of up to 1500 degrees Fahrenheit. These bolts can only be hardened using the cold working procedure. UNS S34700 Stainless Steel bolts are highly durable and have a beautiful surface finish. These bolts could easily resist corrosion-related damages due to the elements present in their alloy.

Furthermore, depending on the user specifications and the application requirements, these 347H bolts may be available in various shapes, sizes, and dimensions. A series of quality checks and other tests are performed on the bolts to ensure their quality.

Because these SS 347 bolts are made from high-quality raw materials, they have a longer lifespan than other bolts. Because of all of the properties and characteristics that these bolts possess, they are widely used in a wide range of industrial applications.

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Specification :-

Specifications DIN, ISO ,JIS ,GB, IS, BS, ASTM
Standard ASTM / ASME SB 160 / 164 / 425 / 166 / 446 / 574 / 472
Size M0.2 to M33 | 3/6" to 2" | Custom Sizes
Length 3 mm to 200 mm | Custom Sizes
Dimensions DIN 931, 933, 934, 7991, 976, 125, ASME B18.2.1, B18.3
Form Hex, Threading, Square, Round as per Gauge Etc.
Threads Unless otherwise specified, the threads shall be rolled or cut and tapped horizontally or vertically
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
Certification Dual Certified As per ASTM & ASME Codes
Test Certificate As per EN 10204 / 3.1 Manufacturer Test Certificate, PED 97/23/EC Certified, Merkblatt AD 2000 W2 Certified
Raw materials Source JSPL, Mukund Steel, Tata Steel, Dhamm Steel, Usha Martin,etc.
Packing IN BULK: canton, pallet, Small Boxs / carton / pallet, or customer request
Surface Coating Cadmium Coating
Hot Dipped Galvanizing Coating
Ptfe Coated Nickel Alloy 200 Bolts
Phosphate Coating
Teflon Coating
Xylon Coating
Zinc Coating

Equivalent Grades

SS 347 1.4550 S34700 - -
SS 347H 1.4961 S34709 - -

Chemical Composition

Grade C Mn Si P S Cr Ni Ti
347 0.08 max. 2.00 max. 0.75 max. 0.045 max. 0.03 max. 17.0 – 19.0 9.0-13.0 10 x C min.(1.00 max.)
347H 0.04 – 0.10 2.00 max. 0.75 max. 0.045 max. 0.03 max. 17.0 – 19.0 9.0-13.0 8 x C min. 1.00 max.)

Mechanical Properties

Density Melting Point Tensile Strength Yield Strength (0.2%Offset) Elongation
7.96 g/cm3 1450 °C Psi – 75000 , MPa – 515 Psi – 30000 , MPa – 205 40 %

Applications and Uses

  • Chemical Industries
  • Oil & Gas Industrires
  • Power Plant Industries
  • Shipbuilding Industries
  • Fertilizer Industrires
  • Petrochemical Industrires
  • Sugar Industrires
  • Cement Industrires