What is Grade 8 bolts ?

Grade 8 bolts These Grade 8 bolts are made up of a chemical composition that is medium carbon alloy steel. These bolts are treated with heat in an atmosphere where carbon is controlled. These Grade 8 bolts are comparatively stronger and thus comparatively better than the grade 5 that are available. These Grade 8 bolts have six radial lines in total above the bolt.

These Grade 8 bolts also have great torque strength as they have the carbon present in them. These bolts are known to have great strength as well as great tensile strength because of which they are used in a large number of industrial applications. They are basically used in applications where the stress is a factor along with heavy load bearing.


Grade 8 Yellow Zinc Fasteners – Nuts, Washers, Bolts & Screws. These fasteners are heat treated to harden the metal. Grade 5 Zinc Fasteners are partially treated, Exporter.

Sumit Impex is well known to manufacture high quality Grade 8 bolts. They keep all the industrial standards, guidelines, rules and regulations in mind before manufacturing the product so as to ensure a good quality product is manufactured.

These Grade 8 bolts could be available in different lengths, sizes as well as dimensions depending upon the specifications or requirements provided by the user or the need of the applications. Because of the properties and the characteristics that these fasteners have they are used in a wide variety of industrial applications such as aerospace, the marine industry, in the military, etc.

Grade 8 bolts Specifications

Grade Grade 8 bolts
Specification ASTM A 193 ASME SA 193
Standard  DIN, ASTM, BS and all International Standards
Size M3 – M56 | 3/6″ to 2″ | Custom Sizes
Length 3 mm to 200 mm
Form Hex Head Bolts, Square Bolts, U bolts, Eye bolts, T bolt, Hex Bolt, Lag Bolts, Counter sunk Bolts, Hex Head nuts, Square nuts, Lock nuts, Eye nuts, wing nuts, T nuts, Panel Nuts, Coupling Nuts, Dome nuts, Acorn Nuts.
Application Most commonly used in petroleum refineries, Boilers, Heat exchangers, Condensers, Pipelines, Cooling towers, Steam exhausts, Electric generation plants, On occasion will be found in fertilizer and chemical plants.
Grade C Mn P S Si Cr Ni
ASTM A194 Grade 8 0.08 max 2.00 Max. 0.045 0.03 1.00 max 18.0 – 20.0 8.0 – 11.0
Specification Nom. Size, In. Proof Load Stress, ksi Hardness
Min Max
A194 Gr 8 1/4 – 4 80 B126 B300

Other Products

Grade 8 Steel Hex Head Bolts Grade 8 Hexagon Bolts
A194 Gr 8 Hex Bolts Grade 8 Hexagonal Head Bolt
Grade 8 Heavy Hexagon Bolts ASTM A194 Grade 8 Heavy Hex Bolts
Grade 8 Machine Bolts Machine Bolt Grade 8
Grade 8 Hexagonal Head Bolt Grade 8 Hex Machine Bolts
Grade 8 Heavy Hex Bolts ASTM A194 Grade 8 Heavy Hex Bolts

Grade 8 bolts Price List

  • A194 Gr 8 Hex Bolts
    US $1000-2500 / Ton
  • Grade 8 Hexagon Bolts
    US $2000-3000 / Ton
  • Grade 8 Steel Hex Head Bolts
    US $1.5-4.5 / Kilogram
  • Grade 8 Hex Bolts
    US $1800-2300 / Ton
  • Grade 8 Heavy Hex Bolts
    US $1550-2400 / Ton
  • Grade 8 Machine Bolts
    US $1800-2300 / Ton
  • Grade 8 Hex Machine Bolts
    US $1300-2600 / Metric Ton


We Sumit Impex Metal Ensure the best quality of Packing , because its play important role especially in a case of international shipments in which consignment pass through various channels to reach the ultimate destination, so we put extraordinary concern regarding packaging.

We pack our goods in numerous ways based on the products. We pack our products in multiple ways, such as,

  • Boxes and Crates
  • Shrink-wrapped
  • Carton boxes
  • Wooden pallets
  • Wooden boxes
  • Wooden crates

Testings (Destructive, Non Destructive)

  • Mechanical Testing Such as Tensile, Elongation, Reduction of Area
  • Sulfide Stress Corrosion Cracking (SSC), NACE TM 0177
  • Hydrogen-Induced Cracking (HIC) Test, NACE TM0284
  • Positive Material Identification – PMI Testing
  • Chemical Analysis – Spectro Analysis
  • Intergranular Corrosion (IGC) Test
  • Pitting Resistance Test
  • Dye Penetrant Test (DP Test)
  • Micro Test
  • Macro Test
  • Hardness Test
  • Flaring Test
  • Flattening Test
  • Hydrostatic Test
  • Radiography Test
  • Ultra Sonic Test (UT)
  • Eddy Current Testing
  • Impact Test
  • Bend Test

Application Industries

These material are not a single material but the name for a family of corrosion resistant steels. Like many scientific breakthrough the origins of stainless steel lies in a lucky accident. From the smallest part of zipper to the largest building skyscraper, stainless steel is an essential part of modern life.Stainless steel’s strength, resistance to corrosion and low maintenance make it the ideal material for a wide range of applications. It is also has a long life cycle and is 100% recyclable.

  • Construction
  • Bridges
  • Petrochemical Industry
  • Ship Building
  • Engineering
  • General Structural Purposes
  • Offshore and Onshore Services

Stainless Steel Sheet Manufacturers

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