These bolts supercede NAS1104 high strength bolts.
For Drilled Shank add "D" at end of part number.
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These bolts size wise have a bit less thread and hence more shank for a given length relative to a similar AN bolt. As such, the -xx length matters more so than with a typical AN bolt when trying for the two threads sticking out requirement. The difference between a thick and thin washer can matter.
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