1st gear is antibacklash type
A cylindrical item having a full 360 degree (6.282 radians) complement of teeth on two or more surfaces. It may be a one-piece casting or composed of two or more separate items firmly held together by welding, rivets, pins, or the like, to form a single unit. It is designed to mount on a shaft. For items consisting of a shaft with an integral complement(s) or gear teeth, see gearshaft (as modified). Excludes gear subassembly, speed decreaser.
Classification: Gears and gearing, other than toothed wheels, chain sprockets and other transmission elements entered separately
NSN 6150-01-545-2045
NSN 6610-01-195-3497
NSN 5998-00-197-8821
NSN 6610-00-034-3709
NSN 5999-01-415-0959
NSN 6145-00-594-7822
NSN 6130-01-193-7934
NSN 5998-01-435-0441
NSN 6110-01-003-9614
NSN 5855-00-631-4565
NSN 5999-01-374-5638
NSN 5950-00-915-6514