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 5965-01-539-6772
NSN 6645-01-040-5233
NSN 5895-00-239-9138
NSN 2925-01-166-1527
NSN 5915-01-487-6454
NSN 6620-00-060-6801
NSN 5920-01-296-1647
NSN 5996-01-329-7161
NSN 6650-00-484-3616
NSN 7035-00-562-9881
NSN 6610-01-199-7371
NSN 5910-01-492-1650