Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number TLL4646-1 found under Circuit Card Assembly by I T I Electronics Inc. The National Stock Number assigned to this part is 5998011975040, and the Federal Supply Class is 5998 Electrical And Electronic Assemblies Boards Cards And Associated Hardware. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like TLL4646-1.