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 5920-00-862-5820
NSN 6220-01-518-6827
NSN 6620-01-363-0499
NSN 5925-01-609-8561
NSN 6145-00-336-8257
NSN 5960-00-932-3067
NSN 6645-00-258-8547
NSN 6610-01-398-1094
NSN 2925-01-543-0073
NSN 5925-00-170-4090
NSN 6645-00-221-1058
NSN 5950-01-377-0908