Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 999-1-37X1ALT1ITEM10B found under Contact Assembly Electrical by Eaton Corporation. The National Stock Number assigned to this part is 5999004682004, 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 999-1-37X1ALT1ITEM10B.