Astm A320 Bolts


About Astm A320 Bolts

Visionalloys are the prime source of best quality fasteners like ASTM A320 Bolts and its other respective grades. These grades are created by undertaking various technical tests such as tension testing, impact testing, and hardness testing of A320 Grade L7 Bolts. Along with ferrite and austenite grades, the specification of A320 Gr L7 Stud consists of multiple Stainless steel fasteners, for instance, A320 Gr L7 Hdg. It seems that along with an unnotched impact by 20-ft-lb value (minimum), these ASTM A320 Bolts are recommended for the applicants having the procedure in low temperature like -150 Degree F.

Having superior abilities like tackling extreme pressure or high temperature and resistivity to the corrosive environment of ASTM A320 Stud Bolts tend to possess extensive durability. However, the market always demands or, in technical terms, the best quality such that our experts have developed premium quality of pattern besides custom sizes of the grade. Applicants have daily processing under low temperatures. ASTM A320 Grade L7m Material grades are highly benefited as its specifications say about using stainless steel and alloy steel bolt material which tends to serve better than any other grade. 

The ASTM A320 Grade L7m Bolts are specially used for industries where pressure or temperature reaches – 150 Degree F, which is extremely low. However, ASTM A320 L7 Stud Bolts pertain to have Charpy impact, which is a minimum value of 15 ft-lb at the low temperature mentioned above. Strain hardened bolts, screws, and forged or rolled are the prime places for the use of ASTM A320 Grade L7 Stud Bolts, which can cover all these things. Applicants such as valves, pressure containers, flanges, high-pressure vessels, and fittings have impactful demand for ASTM A320 Gr L7 Stud Bolt. 

The series of 8UN thread is similar to the ASTM A193 standard mentioned on A320 Gr L7 Material fasteners for the measurement of more than 1” in diameter. Process of tempering and Quenching is done by AISI 4142/4140 for the ASTM A320 Grade L7 Nuts, a steel alloy. These grades have vast usage based on their extensive attributes. Engineering and industrial projects seem to be the most promising industry for the A320 Bolts where the abilities such as Enhanced service life, exclusive performance, and Robustness of these grades are seen. However, resistivity against corrosion is among the topmost favorable ability offered by ASTM A320 Grade L7 Stainless Steel Bolts. 

Being austenitic fasteners having carbon elements by less proportion contains nickel, chromium, along molybdenum to enhance the toughness. Constant feeds along with low speeds are the essential factors for the process of machining, which results in the reduction of the tendency to work harden. Sensitization resistivity at the time of welding is served due to the low carbon element present in it, which is served in thermal procedures.

Information of Astm A320 Bolts


DIN, ASTM, BS and all International Standards


+/-0.01mm to +/-0.05mm


3 mm to 200 mm |Custom Sizes


5 Pices


M3 - M56 | 3/6" to 2" | Custom Sizes

Special Grade

Stainless Steel 310 ,316,317,347


canton, pallet, Small Boxs / carton / pallet, or customer request

Top Manufacturers

SPAX® Screws, GKW, Unbrako, Kundan, APL, Sundaram Precision, Infasco, EBY Fastener Etc.

Comparative International Stainless Steel Fasteners Grades

properties of Astm A320 Bolts

  • Mechanical Properties
  • Chemical Composition

Makes Available of Astm A320 Bolts

Thyssenkrupp Make Astm A320 Bolts

Outokumpu Make Astm A320 Bolts

Acerinox Make Astm A320 Bolts

Mukand Steel Make Astm A320 Bolts

Laxcon Steel Make Astm A320 Bolts

JSW Make Astm A320 Bolts


  • Packaging
  • Testings (Destructive, Non Destructive)
  • Application Industries
  • We Visionalloys 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.
Boxes and Crates Shrink-wrapped
Carton boxes Wooden pallets
Wooden boxes Wooden crates
Testings (Destructive, Non Destructive)
  • Chemical Analysis – Spectro Analysis
  • Intergranular Corrosion (IGC) Test
  • Pitting Resistance Test
  • Dye Penetrant Test (DP Test)
  • Micro Test
  • Macro Test
  • Hardness Test
  • Flaring Test
Application Industries
  • Construction
  • Bridges
  • Petrochemical Industry
  • Ship Building
  • Engineering
  • General Structural Purposes
  • Offshore and Onshore Services

Delivery Available

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