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ASTM A490 Heavy Hex Bolts

Note: In 2016, specification A325 was officially withdrawn by ASTM and replaced by ASTM F3125. Though the standard has changed to F3125, a few basic things remain the same. Bolt head markings will remain as they were, and Type 1 and Type 3 remain the same way to distinguish the makeup of the steel. The new F3125 specification is a consolidation and replacement of six ASTM standards, including; A325, A325M, A490, A490M, F1852, and F2280.

ASTM A490 this specification covers two types of quenched and tempered, alloy steel, heavy hex structural bolts having a tensile strength of 150 to 173 ksi. The bolts are furnished in sizes 1/2 to 1-1/2 in., inclusive. These bolts are intended for use in structural connections and therefore the thread length is shorter than standard hex bolts. ASTM A490 specification applies only to heavy hex structural bolts. When a protective coating is required and specified, the bolts shall be coated with Zinc/Aluminum Corrosion Protective Coatings in accordance with Specification F1136, Grade 3(commercially called Geomet), both chromium and non-chromium versions, or Specification F2833, Grade 1. These coatings have been qualified based on the findings of an investigation founded on IFI 144.

ASTM A490 Grade

ASTM A490 Tensile Strength Requirements

ASTM A490 Chemical Composition% for Type 1 Bolts

*a Steel, as defined by the American Iron and Steel lnstitute, shall be considered to be alloy when the maximum of the range given for the content of alloying elements exceeds one or more of the following limits: Manganese, 1.65 %; silicon, 0.60 %; copper, 0.60 % or in which a definite range or a definite minimum quantity of any of the following elements is specified or required within the limits of the recognized field of constructional alloy steels: aluminum, chromium up to 3.99 %，cobalt, columbium, molybdenum, nickel, titanium, tungsten, vanadium, zirconium, or any other alloying elements added to obtain a desired alloying effect.

ASTM A490 Chemical Composition% for Type 3 Bolts

ASTM A490 Recommended Nuts & Washers

About Us

“we do what we say” This sentence is what our factory has kept in mind during more than 20 years of production and trade. In any case, we have considered the feasibility of each order production before committing to the customer. We are doing what we promise. Avoiding problems before any problems occur is what we have always insisted on doing.

Fasteners are used as basic connecting parts and are used in various buildings, vehicles, ships, bridges and machinery. As a fastener factory, we produce the most basic connection elements for the world every day. Doing a good job in the production of fasteners is our most important thing. This is not only a business, but also providing original parts for the global connection parts. Our factory must walk the talk, any mistakes and delays will bring the development of the basic industry to a halt. Workers will stop, projects will stop, these are things we don't want to see. We hope to cooperate with you for mutual benefit and win-win.

FAQ

Q: We want to put our factory's mark on the ASTM A490 Heavy hex bolt, is that ok?

A: Yes. We support OEM. Welcome your inquiry anytime.

Q: I want to buy a small quantity of ASTM A490 Heavy hex bolts, is that possible? How about your price?

A: No matter the quantity of products is allowed. You can send email (www.nbasme.com) or WhatsApp message to our Export Manager Micheal to confirm the product stock situation. We will provide you with corresponding solutions. You can tell us your target price, and we will give you the best plan according to the market.

Q: Do your products have an API certificate?

A: Yes, them do. API is the American Petroleum Institute. Our fasteners can be produced and certified in accordance with API requirements. Our products are already used in the US oil industry.