Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 4K6690 found under Lead Storage Battery by Caterpillar Inc. The National Stock Number assigned to this part is 6150012941280, and the Federal Supply Class is 6150 Miscellaneous Electric Power And Distribution Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 4K6690.