Helical gearing may be used in place of spur gearing
A group of gear(s) and/or worm(s), of fixed ratio, specifically designed for the purpose of decreasing the speed from the driver(s) to the driven shaft or shafts; having no reversing feature except by reversing the prime mover. See also transmission (as modified) and gearcase-motor.
Classification: Parts of gearing, gear boxes and other speed changers
NSN 6320-00-456-0836
NSN 6135-01-421-3189
NSN 6145-01-003-8665
NSN 7035-00-059-7970
NSN 5925-00-467-1738
NSN 5996-01-560-9455
NSN 5965-00-554-4138
NSN 6645-01-564-0569
NSN 5999-00-318-9135
NSN 5985-01-089-2027
NSN 6620-01-261-0054
NSN 6650-01-088-5199