What is Grade 8 bolts ?

Grade 8 fixtures are known to be high strength / high-tensile fixtures and are used for a wide range of highly industrial applications including machinery, valves, pumps, vessels, engines, tractors, and even tanks… although it may seem that a bolt is like a bolt, the way each bolt is made makes significant difference. 8 bolts with a smaller diameter are cold, with wire spools wide, in which large bolts are hotly cast. Technically, Grade 8 products are normal to be marketed as hex cap screws, although many people simply call them Grade 8 “bolts” under the SAEJ-429 standard. Grade 8 Bolts and fixtures consist of carbon alloy metal, which is heat processed in a carbon-controlled attraction and is generally the longest and most reliable attachment. Grade 8 bolts with a tensile force of 150,000 psi have the highest ratings. Grade 8 is used in marine, industrial, aerospace, off-road, and mechanical markets in cases of high load-bearing pressures and stress.

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, whereas our stock of Grade 8 Yellow Zinc fasteners are thru heated to maximize its hardness. Exporter.

In military, aerospace, and marine applications requiring high-pressure or load carrying pressure, typical applications are 8-grade bolts. For the same purpose, the off-road vehicle industry often wants grade eight bolts.

It must be kept in mind that the highest level of a bolt that you can use in question is near Toujours, a safe bet. Manufacturing companies may prescribe grade 5, but the use of higher quality products never hurts. The worst thing is that you have paid for the peace of mind a little more.

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

Country we serve / City we deliver

Spain, Trinidad & Tobago, South Africa, Costa Rica, Netherlands, Colombia, Tibet, Afghanistan, Greece, Mongolia, Austria, United Arab Emirates, Angola, India, Jordan, Chile, Mexico, Namibia, Japan, Israel, Macau, Argentina, Ghana, Kuwait, Ecuador, Switzerland, Nigeria, Ukraine, Bulgaria, Poland, South Korea, Chile, United States, Hungary, Bhutan, Norway, Kazakhstan, Belarus, Czech Republic, Morocco, Italy, Denmark, Venezuela, Lebanon, Zimbabwe, Belgium, Slovakia, Yemen, Puerto Rico, Algeria,Sri Lanka, New Zealand, Libya, Iraq, Nepal, Romania, Egypt, Ireland, Kenya, Saudi Arabia, Russia, Indonesia, Singapore, Hong Kong, Peru, Qatar, Azerbaijan, Bahrain, Germany, Australia, United Kingdom, Pakistan, Serbia, Gabon, Taiwan, Iran, Thailand, Oman, Vietnam, Lithuania, Portugal, Finland,Tunisia, Gambia, Brazil, Bangladesh, Turkey, Malaysia, Croatia, France, Sweden, Estonia, China, Philippines, Canada, Bolivia, Nigeria

& Riyadh, Moscow, Toronto, Geoje-si, Karachi, Istanbul, Courbevoie, Milan, Chiyoda, Thane, Aberdeen, Brisbane, Lagos, Lahore, Vung Tau, Faridabad, Ho Chi Minh City, Colombo, Santiago, Jaipur, Jeddah, Ludhiana, Doha, Haryana, Vadodara, Atyrau, Petaling Jaya, Ahvaz, Ernakulam, Gimhae-si, Surat, Sydney, Bengaluru, Mexico City, Ulsan, Madrid, Bangkok, Pimpri-Chinchwad, Thiruvananthapuram, New York, Bhopal, Howrah, Coimbatore, Chennai, Edmonton, Los Angeles, Rajkot, Mumbai, Sharjah, Cairo, Seoul, London, Jakarta, Abu Dhabi, Dammam, Nashik, Dubai, Hyderabad, Houston, Manama, Calgary, Granada, Rio de Janeiro, Navi Mumbai, Al Khobar,Kanpur, Hong Kong, Nagpur, Port-of-Spain, Ankara, Baroda, Algiers, Ahmedabad, Perth, Gurgaon, Singapore, Busan, Montreal, Al Jubail, Secunderabad, Ranchi, Jamshedpur, New Delhi, Tehran, Kolkata, Caracas, Melbourne, Kuwait City, Dallas, Pune, Muscat, Noida, Indore, Hanoi, Chandigarh, La Victoria, Kuala Lumpur, Bogota, Visakhapatnam