Patent 11767871 was granted and assigned to Howmet Aerospace on September, 2023 by the United States Patent and Trademark Office.
A lockbolt collar having a shank including a first end, a second end opposite the first end, a through-bore extending from the first end to the second end, an inner wall extending from the first end to the second end, and a tab extending radially and outwardly from the inner wall, the tab including a top surface having an arcuate shape, the arcuate shape of the tab being sized and shaped to mate with at least one lock groove of a threaded portion of a pin member.