A fitting used with a union nut and thread piece to form a union.
NSN 5945-01-632-3655
NSN 6320-01-442-3428
NSN 6620-00-564-9412
NSN 5996-00-862-5514
NSN 5920-00-771-7280
NSN 6685-00-991-1264
NSN 5999-01-197-8160
NSN 5930-00-689-4115
NSN 6145-01-407-4786
NSN 6620-01-100-0431
NSN 5999-00-164-1204
NSN 6320-00-459-8973