A rigid item varied in size and shape. It is normally located on the bottom of a valve. It must have drilled and/or tapped holes for mounting purposes.
NSN 6105-00-509-0720
NSN 6110-01-052-4114
NSN 7035-00-585-2113
NSN 6105-01-421-2644
NSN 5945-00-557-5271
NSN 5925-00-194-9146
NSN 6650-01-327-5113
NSN 6150-01-524-5186
NSN 5965-00-497-8820
NSN 5855-01-566-8574
NSN 7035-00-513-9764
NSN 6130-01-474-9355