My plans call for anchor bolts meeting the requirements of F1554 grade 248. I thought the three grades were 36, 55, and 105. What does 248 mean?

On some projects, engineers will designate the minimum yield strength (grade) of F1554 anchor bolt in megapascal (MPa). In this example, 248 MPa equals 36 ksi, while 380 MPa equals 55 ksi and 724 MPa equals 105 ksi.

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