Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number TLC4900-11 found under Rack Electrical Equipment by I T I Electronics Inc. The National Stock Number assigned to this part is 5975002132330, 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 TLC4900-11.