1 hole 0.406 in. Dia
NSN 6150-01-225-3713
NSN 4140-00-104-7323
NSN 6320-01-315-6450
NSN 6240-00-998-7765
NSN 5855-01-100-3272
NSN 5855-01-222-1242
NSN 4140-00-971-2103
NSN 5960-00-054-7561
NSN 5935-00-501-6806
NSN 6620-01-087-2354
NSN 6145-01-283-8816
NSN 5975-00-415-6844