A fitting used with a union nut and a tailpiece to form a union.
NSN 6620-01-441-7896
NSN 5996-01-031-8916
NSN 5985-01-566-9029
NSN 6645-01-513-4782
NSN 6610-00-850-4910
NSN 5920-00-726-5376
NSN 7035-01-060-3835
NSN 5965-00-177-2932
NSN 6620-00-856-9155
NSN 5985-00-394-5888
NSN 6685-01-012-3657
NSN 5915-01-449-1535