Central aperture 0.250 in. Diameter flattened on two sides to 0.188 in. W.Four slotted holes 0.094 in. Diameter each 22.5 degrees from center line parallel to flatsides.
NSN 5990-01-492-9887
NSN 6320-01-285-1922
NSN 5996-01-309-3602
NSN 5998-00-303-3755
NSN 6620-01-199-7570
NSN 6220-01-247-4721
NSN 6105-01-308-8426
NSN 6620-00-588-3576
NSN 5999-01-118-3975
NSN 6150-01-067-0670
NSN 6130-01-398-0440
NSN 4140-01-646-7141
Last Updated: 03/07/2025