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 5965-00-680-9749
NSN 5935-01-525-1397
NSN 6645-01-202-7986
NSN 2925-01-037-5383
NSN 6220-01-659-4894
NSN 6110-01-468-0157
NSN 5915-01-361-8860
NSN 5930-01-425-2307
NSN 2925-01-376-9236
NSN 4140-00-652-1396
NSN 6240-00-959-7025
NSN 6145-01-581-0527