Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number NDC00641-6013-10 found under Diltiazem Hydrochlo by West Ward Pharmaceutical Corp. The National Stock Number assigned to this part is 6505015326659, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like NDC00641-6013-10.