Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number BWDD LPD 101-4.00-SH 4-PC 5 found under Parts Kit Floor Drain by Bestweld Inc. The National Stock Number assigned to this part is 4510015284049, 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 BWDD LPD 101-4.00-SH 4-PC 5.