Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number TSC 221 1 2 BLK found under Shrink Tubing Aircr by Terminal Supply Inc. The National Stock Number assigned to this part is 1680015840442, and the Federal Supply Class is 1680 Miscellaneous Aircraft Accessories And Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like TSC 221 1 2 BLK.