Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 130-1B found under Mounting Clamp Heat Sink by Eg And G Wakefield Engineering. The National Stock Number assigned to this part is 5975005731993, 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 130-1B.