1 hole 0.406 in. Dia
NSN 7035-01-012-8658
NSN 5975-01-014-6161
NSN 6145-01-406-3387
NSN 6610-01-633-8931
NSN 6220-01-566-4870
NSN 4140-00-833-6239
NSN 6240-00-526-0243
NSN 5905-00-824-0210
NSN 5925-01-565-0431
NSN 5945-01-541-4309
NSN 5915-01-094-9580
NSN 5996-00-303-6013