If you have observed that RAF Electronic Part 4750-10 has a rounded edge on the hex head, while another unit has a sharp chamfer on the top edge of the hex head, as shown in the images below,
We have clarified this with the supplier, and below is their response:
“There is no callout for the head design or chamfer because it can change from run-to-run. Both pictures below are good parts according to the print.”