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Question:

A194 GR3 is what style fasteners

A194 GR3 is what style fasteners

Answer:

A194 American standard I know is the US system, but now do not understand is GR3 in the end is what it means
ASTM A194 is high pressure and, or high temperature conditions with the bolt to match the carbon steel and alloy steel nuts, as GR3 I did not see such a description in the standard
GR3 is GRADE 3 abbreviation, A194 GR3 is carbon steel red or cold beat nut, the minimum tempering temperature of 565 degrees. High pressure and high temperature conditions with the bolt alloy steel nut.

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