What is ASTM A320 Grade L7 Fasteners ?

ASTM A320 Grade L7 can be actually a normal specification for top quality 4140 metal steel bolting substances, designed for usage in non heat solutions. The word”bolting substance” as found inside this specification handles, wrapped, solid or breed hardened pubs, screws, bolts, studs and stud routers. These metal steel attachments have been utilized for jelqing pressure valves, vessels, flanges and fittings for both low temperature support. You will find plenty of forms and types of attachments out there on the current market however currently one of the optimal/optimally value of attachments in distinct size and shapes according to your requirement and app demand. What’s more, you’ll find several businesses and software at which the utilization of attachments can be used for example the petro chemical business, chemical processing, and even compost market.

ASTM A320 Grade L7 Socket Head Cap Bolts, ASTM A320 Grade L7 U-Bolts Dealer in Mumbai, ASTM A320 Grade L7 Heavy Hex Bolts Supplier, ASTM A320 Grade L7 60000 PSI Tensile Strength Bolts Exporter, ASTM A320 Grade L7 Bolts Manufacturer in India.

ASTM A320 Grade L7 Heavy Hex Bolts Manufacturer, ASTM A320 Grade L7 Alloy Steel Bolts Exporter, ASTM A320 Hex Bolts, ASTM A320 Grade L7 Structural Bolts Dealer in Mumbai, A320 Grade L7 Bolts Manufacturer in Mumbai.

All these ASTM A-320 L7/L7M, A194 7M/7 Fasteners protect both the domestic and global specs and for example ASTM, ASME and DIN regular. They truly are readily available for clients of distinct sizes which range between 3mm to 200mm plus far more.

Also, to confirm the attribute of those pieces assorted evaluations and testimonials are accomplished such as the multiple-choice evaluation, hardness evaluation, raw-material evaluation and thirdparty review. Using it, those screws have been packaged with the premium caliber of packing stuff that stops them from corrosion and harms.

ASTM A320 Grade L7 Fasteners Specifications

Grade ASTM A320 Grade L7
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.
Element L7 (AISI 4140) L43 (AISI 4340) B8 (AISI 304) B8M (AISI 316)
Carbon 0.37 – 0.49% 0.38 – 0.43% 0.08% max 0.08% max
Manganese 0.65 – 1.10% 0.75 – 1.00% 2.00% max 2.00% max
Phosphorus, max 0.04% 0.04% 0.05% 0.05%
Sulfur, max 0.04% 0.04% 0.03% 0.03%
Silicon 0.15 – 0.35% 0.15 – 0.35% 1.00% max 1.00% max
Chromium 0.75 – 1.20% 0.70 – 0.90% 18.0 – 20.0% 16.0 – 18.0%
Nickel 1.65 – 2.00% 8.0 – 11.0% 10.0 – 14.0%
Molybdenum 0.15 – 0.25% 0.20 – 0.30% 2.00 – 3.00%
Grade Size Tensile, ksi min Yield, ksi, min Charpy Impact Elong, % min RA, %, min
L7 up to 21/2 125 105 -150° F 16 50
L43 sup a 4 125 105 -150° F 16 50
B8 Class 1 all 75 30 N/A 30 50
B8M Class 1 all 75 30 N/A 30 50
B8 Class 2 Up to 3/4 125 100 N/A 12 35
7/8 – 1 115 80 N/A 15 35
11/8 – 11/4 105 65 N/A 20 35
13/8 – 11/2 100 50 N/A 28 45
B8M Class 2 Up to 3/4 110 95 N/A 15 45
7/8 – 1 100 80 N/A 20 45
11/8 – 11/4 95 65 N/A 25 45
13/8 – 11/2 90 50 N/A

Other Products

ASTM A320 Grade L7 Structural Bolts ASTM A320 Grade L7 Bolt Exporter
ASTM A320 Grade L7 U-Bolts Stockist ASTM A320 Grade L7 Hex Head Bolts Manufacturer
ASTM A320 Grade L7 Lag Bolts A320 Grade L7 Alloy Steel Carriage Bolts
ASTM A320 Grade L7 Alloy Steel Eye Bolts ASTM A320 Grade L7 Bolts Manufacturer
ASTM A320 Gr L7 Hex Headed Bolts ASME A320 Gr L7 AS Elevator Bolts
ASTM A320 Gr L7 Alloy Steel Bolts ASTM A320 Gr L7 Shoulder Bolts

ASTM A320 Grade L7 Fasteners Price List

  • A320 Grade L7 Fasteners
    US $1000-2500 / Ton
  • ASTM A320 Gr L7 Square Bolts
    US $2000-3000 / Ton
  • ASTM A320 Gr L7 Heavy Hex Bolts Exporter
    US $1.5-4.5 / Kilogram
  • ASTM A320 Gr L7 Hex Headed Bolts
    US $1800-2300 / Ton
  • ASTM A320 Grade L7 Structural Bolts
    US $1550-2400 / Ton
  • ASTM A320 Grade L7 U-Bolts Stockist
    US $1800-2300 / Ton
  • A320 Grade L7 Alloy Steel Carriage 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