Hexagon cross section, 0.375 in. Across flats
NSN 5905-01-340-7380
NSN 4140-01-644-9823
NSN 5920-00-113-6041
NSN 6645-01-080-3510
NSN 6145-01-518-4305
NSN 5930-01-143-5012
NSN 5930-01-641-4677
NSN 5975-01-223-8533
NSN 5975-01-295-5769
NSN 6645-00-608-7756
NSN 5935-01-188-8509
NSN 6320-01-397-9995
Last Updated: 08/04/2025