Hexagon cross section, 0.375 in. Across flats
NSN 5999-00-902-1099
NSN 6145-00-197-9010
NSN 6110-01-289-2997
NSN 5835-01-088-4676
NSN 5999-00-933-5070
NSN 5905-01-060-1139
NSN 6645-00-153-3834
NSN 6620-00-993-7744
NSN 5960-01-632-6576
NSN 6145-01-585-6780
NSN 5965-01-648-3736
NSN 6130-01-221-2742
Last Updated: 06/29/2025