Metric size bolt for ASME standard Flange (B16.5 or B16.47) 2

[ChiangJaron]

Dear All,

Can any one point out where accept or un-accept Metric size bolt used for ASME standard flange.

Information
From B16.5 para 1.6, it's only mention that "Except for diameter of bolts and flange bolt holes,
combining values from the two systems constitutes nonconformance with the Standard."

In actually application, it's very strange used Metric bolt to ASME standard flange.

 

[SnTMan]

ChiangJaron, B16.5, the sentence you quoted by any fair reading requires the use of inch-series bolts.

B16.47 per my older copy, units are in inches only, metric bolts are not within the spec.

Regards,

Mike

The problem with sloppy work is that the supply FAR EXCEEDS the demand

 

[david339933]

Standard Designation: B16.5
Edition/Addenda: 2013
Para./Fig./Table No: Para. 1.6-Relevant units, Para. 6.10.1-Dimensiomal
Subject Description: Para. 1.6-Relevant units, Para. 6.10.1-Dimensiomal standards, Appendix A, A-1.2-Bolt cross section a
Date Issued: 02/21/2017
Record Number: 16-883
Interpretation Number : B16.5-17-02
Question(s) and Reply(ies):
Question - Does ASME B16.5-2013 have provisions for the use of metric bolting? Reply - No

 

[MGZmechanical]

Not in ASME B16.5 but in EN 1759 Class designated flanges gives you a table with an equivalence.

Hope it helps
Best regards,