The Department of Defense, through the Defense Logistics Agency (DLA Aviation), is seeking quotes for the procurement of NSN 5310-01-185-6231, specifically for the item "NUT, PLAIN, CASTELLAT." The requirement includes a quantity of 705 units to be delivered to DLA Distribution within 171 days after the order is placed. This item is critical for military applications and must conform to specific source-controlled drawings, with approved sources listed in the solicitation. Interested vendors are encouraged to submit their quotes electronically, and any inquiries should be directed to the DLA via the provided email address, DibbsBSM@dla.mil. The solicitation will be available online, and hard copies will not be distributed.