Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 843 238 001B found under Contact Electrical by Cooper Interconnect Inc. The National Stock Number assigned to this part is 5999004919143, 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 843 238 001B.