1 This specification is under the jurisdiction of ASTM Committee F on. Fasteners and is the direct responsibility of Subcommittee F on Steel Bolts. ASTM F defines Standards for manufacturing Bolts,Studs,Screws for general engineering uses. ASTM F STANDARD SPECIFICATION FOR CARBON AND ALLOY STEEL EXTERNALLY THREADED METRIC FASTENERS.

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The equivalents listed below should be only considered as rough equivalents. Special care should be taken before substituting grades to make xstm that an acceptable substitute is being used. For example, grade 8. A, however, is a socket head cap screw standard, so studs and hex bolts are left out and do not have a direct equivalent. Portland Bolt is happy to help if you have specific questions or needs. We cannot manufacture metric sizes or bolts to metric grades, and we are not able to make recommendations, but we can work with you to determine what is feasible and cost effective if a substitution is allowed.

Is it possible to use bolt classe 8. None of the three will have any inherent corrosion resistance unless you choose to coat them. Tom- Any material substitutions should be approved by the project f5688m.

That said, A bolts and Ashraf- A B7 is mechanically similar to 8.

We do not see an issue in replacing 8. What is the advantage of using bolts 8. Which process would hydrogen embrittlement be the most affected. We want to use these bolts for atm steel f568. They can be hot dip galvanized without embrittlement issues. Dacromet is also allowed, but it asmt being discontinued due to ROHS concerns. Hareshchandra — We are not very familiar with ISObut we do believe there are many grades 4. M12x in mtc its is acceptable.?

Nisa- We are sorry, but are unsure of what you are asking. We sell and can manufacture inch-dimensioned products. We do not handle metrics nor do we know much about them. Application is Deaerator Columns, for bolting Columns to module structure:. Bilal- For the bolts, those grades are very similar from a chemical and mechanical standpoint, but any substitution should approved by the project engineer as there are subtle differences between the two.


So Im worry that Abdelaziz- You are correct, B7 is formulated for high f56m applications, whereas Leon- As long as the C material you chose to use meets the mechanical and chemical requirements of 5. C is typically furnished as chemicals only, so you may need to test it to assure the proper mechanical requirements are met.

Remis- You would need to have that substitution approved by the project engineer. There are similarities between those bolts, but some differences as well.

Hello Asmt, Could you please help me. Can a Grade 8. Many thanks in advance, regards, David. A charpy test would tell you if the 8.

Chris- Apologies, but we are unsure what CTE means. Prashun- Apologies, but we are not familiar enough with all the various ISO standards to know which grade is the closest equivalent. Eman- Apologies but we are not familiar enough with ISO fastener standards to know what astmm equivalent would be.

KK-No, A B7 is a high strength bolting material designed for high temperature, high pressure applications. They should not be substituted without approval from the project engineer. Are you the contact person for your company? I have sent a no. Kindly advise contact details. Ken- If you are sending in a sales f5668m, please send it to sales portlandbolt. If you are sending a purchasing inquiry, please send it to me.


Dear Dane, Please advise. Thank you and Regards, Dinar. Dinar- As long as the bolt meets the requirements of the application, and fits in the hole, you should be able to use either metric or imperial fasteners depending on which is more readily available. Do you have the following info for metric grade 5. David- It does not appear that class 5. The minimum hardness is 82 HRB.

ASTM FM | Revolvy

Niels- Yes, A screws have a specified minimum tensile strength of ksi depending on diameterand the threshold for hydrogen embrittlement concerns is ksi. Ranjith- Thank you for your question, but we are unfamiliar with the DIN standards, so cannot help in this case.


First off thank g568m for all the technical information Portland Bolt r568m brought together and made available to the public. I find myself here almost every work day. Also, does the A have to be f568 or is it acceptable to use SAE J F5568m 5 as a material specification for plain carbon steel metric bolts.

I just want to avoid creating issues for our procurement team by using the wrong spec? Michael- B8 and B8M is andrespectively. Those should be pretty easily obtainable.

Parminder — Apologies, but we are not familiar with any grade 6. We want to go for Anchor bolts with SI system. What shall be refered for its SI equivalent. I failed to found it. Requested to give your openion. Vasant — I am not aware of any direct metric equivalent for F That said, if you can find a manufacturer who can manufacture to metric dimensions, there is no reason they cannot just make bolts to meet the chemical and mechanical requirements of F, but with metric dimensions.

Your email address will not be published. Leave this field empty. As always, an engineer d568m be consulted before grade substitutions are made. Can A be used as a substitute for B7 can replace grade 8. What is equivalent grade of EN iso Application is Deaerator Columns, for bolting Columns to module structure: Can i use 8. High, Can you tell me the CTE of a grade 8. Hi DaneAre you the contact person for your company? Rohit- I am not aware of a direct equivalent, but ISO gr. Is A susceptible to hydrogen embrittlement in the same way as Aidin- Apologies, F586m do asttm know what those equivalents are.

Hi, Is heat treatment is required for 6. Leave a Reply Cancel reply Your email address will not be published.