Vulcan entered the long bar quench and temper market and now the Heat Treating division is the largest long bar, induction heat treater in the world with annual. Caution: All material included in this chart is advisory only, and its use by anyone is voluntary. In developing this information, Fastenal has. Esparragos #B7 #Cadmiados #Fluorocarbonados #Galvanizados #Quito # Ecuador [email protected]

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Jugal — I am sorry, but we are unable to answer that wsparragos. F is the recommended washer for A B7 bolts, and can a mild steel washer be used for A B7? We have summaries for both ASTM standards on our website. Any substitution should be run by an engineer. You will need to consult with the project engineer. As for the studs, same answer, make sure an engineer is ok with the substitution as there may be pros and cons to making the switch.

Mehul — We do not heat treat in house, so you will need to contact a heat treat facility to get specifics about their process.

Enviornment is a little bit corrosive. Richard — 2H and 2HM nuts are not the same strength 2HM are lower strength, but rated for higher temperatureso I would recommend against substituting one for the other. It is not exact, but the closest of the four grades you listed. How can we convert B7 to B7M? Machine bolts sometimes fare better during wedge tests due to the forged head, but we would not say that one is stronger than the other.


Esparragos ASTM A193 Gr. B7, ASTM a 193 Grado B7 Esparrago, Stud Bolt

Your email address will not be published. If the purchaser requires indentation testing, he must specify 3.

Which is category for Mushroom Head roofing bolt without neck to be manufactured? Dear sir, Can n7 explain why yield and tensile strength reduce when increase the bolt diameter?

Is it possible to use A Gr.

Is there any calculation about it? I see no issues using the same bolting material to make washers for use here. We have B7M thread rod and we cut it to some required short length stud bolts did now it is again required heat treatment. It is made epsarragos alloy steel which is a ferritic steel.

Esparragos ASTM A193 Gr. B7, 2 Tuercas A194 Gr 2h Bolt

Why Grade B7M shall have a line under the grade symbol? This is a different grade of material than A Grade B7. Why is this line not mentioned in numerous doccuments? B7 and B7M Bolts have their own equivalent nuts which is 2H and 2HM respectively, is it allowoed to interchange these nuts? We are not familiar with a bolt epsarragos called a mushroom head. What is the difference between Ezparragos and B7M comply to nace mr Tauseef- We are not familiar with BS washers, so I cannot compare those.

The corresponding nuts standards are A grade 8M and F group 2.


It seems to be a requirement in ASTM You will need to consult the project engineer and get their approval for the substitution. Ferry- Apologies, but we do not have any engineers on staff, and do not have the expertise to answer this.

ASTM A B7 vs. A B7M – Portland Bolt

Thanks for your help. I do not know why the documents you reference do not mention the line, perhaps they have not been updated since the change was made. However, we do not have any engineers on staff, g7 we cannot speak to all the possible risks, but what we can say is that 2HM nuts are quite specialized, and I would assume there is a good reason that they were originally specified.

Ari- There are some similarities in tensile and yield, but they are not identical. What standard is the nut compatability chart listed on your website pulled from? A mild steel washer is not hardened and will likely not perform as well with B7 bolts or studs.

Grupo Kazerooni – Varilla Roscada, esparragos B7, B16, Monel y mas Varilla Roscada

Is it just the hardness we are talking abt? Martin- For all intents and purposes, they are the same. B7 and B7M are very different. While no other indication is made, would these studs have to be coated, zinc plated, etc.??