Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 929 939 1 found under Contact Electrical by Mack Trucks Inc. The National Stock Number assigned to this part is 5999015558255, and the Federal Supply Class is 5999 Miscellaneous Electrical And Electronic Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 929 939 1.