Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number ZEP BLACK-OUT 1843 (FLOOR FINI found under Finish Floor Nonbuffing by Acuity Specialty Products Inc. The National Stock Number assigned to this part is 7930014122402, 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 ZEP BLACK-OUT 1843 (FLOOR FINI.