Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 142258-B21 found under Cable Assembly Power Electrical by Hewlett Packard Co. The National Stock Number assigned to this part is 6150015569657, 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 142258-B21.