Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SIM00004 found under Nrp Usim V2 Box Mod by Plainville Electrical Products. The National Stock Number assigned to this part is 5975016253107, and the Federal Supply Class is 5975 Electrical Hardware And Supplies. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like SIM00004.