One of the 3 mounting holes 0.313 in.
A toothed wheel whose teeth or sprockets are designed to be engaged with the links of a pitch chain, track, or the like. It is usually used for transmitting power.
Classification: Chain sprockets and parts thereof
NSN 5905-01-243-9170
NSN 6645-01-041-3533
NSN 6685-00-754-4111
NSN 5965-00-468-3071
NSN 5910-00-267-9509
NSN 6220-00-006-9746
NSN 5905-01-552-5038
NSN 5935-01-422-3228
NSN 5999-01-622-2691
NSN 5998-01-574-3444
NSN 6105-01-656-6348
NSN 5975-01-298-6848