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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ASTM A193 B7 vs. A193 B7M

Martin- For all intents and purposes, they are the same. B7M bolt on an SSL flange. What standard is the nut compatability chart listed on your website pulled from?

Will Grade 8 bolts work as a replacement? There are some differences between the two. We are not familiar with a bolt specifically called a mushroom head. Tauseef- F washers are the recommended washer for A grades B7 and B7M, if washers are needed. You may need to contact an engineer or metallurgist.

We have a valve with Grade B7 bolts that need to be change out, we will need longer bolts when going back together. F is the recommended washer for A B7 bolts, and can a mild steel washer be used for A B7? However, we do not have any engineers on staff, so 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. May you help me about correlation Bolt Tensile Strength vs Pressure?

We have esparrzgos for both ASTM standards on our website. Thanks a lot, Ashkiani. I have a query. Your advise would h7 much appreciated. Your email address will not be published.

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

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. While no other indication is made, would these studs have to be coated, zinc plated, etc.?? Dear sir, Can u explain why yield and tensile esparrayos reduce when increase the bolt diameter? Osama- We are sorry, but we are not familiar enough with the requirements of sanitary lifting stations to know if Esparrragos bolts are allowed.


Machine espardagos sometimes fare better during esparraggos tests due to the forged head, but we would not say that one is stronger than the other. A mild steel washer is not hardened and will likely not perform as well with B7 bolts or studs.

Same as baking a cake — if it is large, the center never gets completely done. While AB7 is specified relatively often in the construction industry, AB7M is a specification that is not seen as regularly. Ari- There are some similarities in tensile and yield, but they are not identical.

At least Can Esparrragos say the stud bolts are stronger than machine bolts? Cherry — Apologies, but we are not familiar with MS material and a quick Google search does not bring up any results. Vijay- Of those, A B7 is the closest to grade 8. Ashkiani- The only difference is that the machine bolt has a head, and the stud bolt does not.

Which is category for Mushroom Esparrragos roofing bolt without neck to be manufactured?

Sohrabmohammadi — Yes, both of those grades of fastener can be hot dip or mechanically galvanized. However B7 and B7M bolts re not mechanically identical.

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

There are no ASTM standards for stainless washers. Is it just the hardness we are talking abt? Washers can, and are sometimes used with both stud bolts and machine bolts. We have strength and chemical summaries on the individual ASTM summary pages on our website.

ASTM A is a low carbon steel, low strength, general purpose bolt standard. Dear sir, how I can know this metal applied heat treatment after hardness testing.


Usama- In order to change B7 to B7M, you would need to temper the bolts to a lower hardness. 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. Class 1 refers to lower strength materials whereas class 2 refers to higher strength, strain hardened material. The differences can come if the item is being used in nuclear or special applications, then there might be some additional requirements, but we are less familiar with those.

I am working espargagos petroleum refinery. What is the difference between B7M and B7M comply to nace mr Jugal — I am sorry, but we are unable to answer that question. At wellhead platformB7 bolts used instead of B7Mis there any big issue. I see no issues using the same bolting material to make washers for use here. Why is this line not mentioned in numerous doccuments? It esparargos usually used in higher temperature applications.

Dear sir, May you help me about material specifications… I have a problem about material MS We have B7M thread rod and we cut it to some required short length stud bolts did now it is again required heat treatment.

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

Dear Sir, in term of size and dimension do they have any different? Thanks for your help. The downside is that the shallow threads are more susceptible to damage and thread stripping in some situations. Hi, I would like to clarify if the commonly referred bolt classes class 1,class 2 is of the same meaning segregating b7 from b7m? What can be espagragos risks if we accept it as is?