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English Translations » 【管道阀门技术圈】 » Fully threaded studs / Heavy-duty hex head nuts, HG/T 20634

Fully threaded studs / Heavy-duty hex head nuts, HG/T 20634 performance grade combination

2019-06-25View Original

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A193 Gr.B8M CLASS 2 / A194 Gr.8M. Are both of these material combinations acceptable?
Reply #22019-06-25
No problem; it’s just that the maximum hardness of 8MA is slightly lower than that of 8M.
Reply #32019-07-08
This post was last edited by 2005180005 on 2019-7-8 at 17:00. I thought the 8MA grade was higher than 8M; which standard should be used for determination? The grade of nuts is at most the same as that of bolts; so since 8M is used for bolts, how can 8MA be used for nuts? ?

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Translated at 2026-07-21 04:16:15

Original: https://bbs.hcbbs.com/thread-2732050-1-1.html

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