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ASTM 193 studs

ASTM 193 studs

ASTM 193 studs

(OP)
Can someone help me identify the marks on two sets of threaded studs?  I've got 2 sets of studs, that are ASTM 193 B7.  The end of one set is stamped "K B7" and the end of the other set is stamped "FP B7"  The sets came from different suppliers and we seem to be having different failure rates for the two sets

What does the "K" and "FP" stand for?

Casey

RE: ASTM 193 studs

What type failures are you having with your B7 Studs?

Can you come back with more information, like size, service, and type failure.

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