Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number P-S-311 TY2 found under Scouring Powder by General Services Administration Inc. The National Stock Number assigned to this part is 7930001290807, 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 P-S-311 TY2.