85 Or 100 ft/lbs?

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There are six of the regular hex head, and four of the windage tray versions.

Radial lines would indicate gr 8. I don't know if the circle indicates anything. I have found torque values of 53 (dry), 80, 80 (dry), 90, 100 (lubed), 110 (lubed), 105, 107. All for 1/2-13. Then I stopped looking.

Are these stock bolts?
Yes...